Pushbutton / Indicator

LA39 Series Pushbutton/AD16 Series Indicator

Pushbutton/Indicator
LA39 Series Pushbutton
AD16 Series Indicator
Company Profile
APT has been established in 1993. Today it is now a Chinese leading manufacturer of low-
voltage components and has been specialized in the manufacturing of low voltage products
such as pushbuttons, indicators, cam switches and general-purpose relays. In August 2008,
Siemens Electrical Apparatus Ltd. Suzhou (hereinafter referred to as“Siemens”) made
the wholly-owned acquisition of APT, putting the APT brand and related products under the
operation of Siemens. With unified quality control and R&D resources of Siemens, APT focuses
on manufacturing pushbuttons, indicators and other important low-voltage products such as
tower lights, control cabinets, combined lights, current transformers and limit switches etc.
Through over 20 years of promotion and application, the APT products have been
widely serving dozens of industrial fields in China including power, energy, rail transit,
elevator, logistics, machine tool, etc. They have been successively selected and applied in
Qinshan Nuclear Power Plant, the Three Gorges Project, Shenzhou V Spacecraft, Qinghai-
Tibet Railway locomotives,“Harmony”Electric Multiple Unit,“Fuxing”Electric Multiple Unit,
international airports and urban metros and have become the preferred brand for national key
projects. At the same time, Siemens gives full play to its international operation experience to
continuously enhance the management and business development of APT and better serve
the Chinese market through advanced technology and improved product line.
LA39-A/B/C Series Pushbutton
04
Page

LA39-E Series Pushbutton

36
Page

LA39-G Series Pushbutton

46
Page

LA39-F Series Pushbutton

58
Page

AD16 Series Indicator and Buzzer

64
Page

Lettering Symbols on Head of Pushbutton/Indicator

76
Page
 LA39 A/B/C
Series Pushbutton
Product Features
● LA39-(A1B1C1): sharp outline and beautiful lines. It is The reliability of installation will be reduced due to the
fixed and installed with oblique screws, which conforms influence of ambient temperature, so it is suggested that
to the rigorous, firm and reliable engineering design this installation mode shall not be adopted when using
concept in Europe and America. rotary working conditions such as selectors and key
●
switches. Knobs shall not be used when choosing C3,
LA39-(A2B2C2): well-arranged outline, secured with high-
and if selectors are selected for A3B3, an anti-rotation
strength PBT plastic parts in combination with straight
washer is needed.
screws, which not only inherits the steady and firm
characteristics of A1B1C1, but also takes into account the ● LA39-(A4B4C4): fastened with nuts (without fastening
manufacturing cost. It is a simple form of A1B1C1, which screws), which can lower the installation difficulty and
enables users to have a variety of economic options. reduce the workload of customers.
● LA39-(A3B3C3): fastened with nuts (with fastening ● LA39-(A5B5C5): structured with one-handed installation,
screws), simple and concise, which can lower the designed with quick installation, which is beneficial to
installation difficulty and reduce the workload of users. installation in small space.

Compliance with standards: IEC 60947-5-1 GB/T 14048.5

LA39-A/B/C
 LA39 A / B / C
series PUSHBUTTON

◎ Order code description

LA 39 — □ □ □ □ □ / □ □ □ □ □
No.
1 2 3 4 5 6 7 8 9 10 11
1 Pushbutton order code
2 Design S/N
3 Head type A, B, C and middle seat type (1~5)
When 1 switch
10: 1NO 01: 1NC 20: 2NO 02: 2NC 11: 1NO1NC
element is installed:
When 2 switch 30: 3NO 03: 3NC 40: 4NO 04: 4NC 21: 2NO1NC
Contact
4 elements is installed: 12: 1NO2NC 31: 3NO1NC 13: 1NO3NC 22: 2NO2NC
composition
When 3 switch 60: 6NO 06: 6NC 50: 5NO 05: 5NC 51: 5NO1NC
elements is 15: 1NO5NC 41: 4NO1NC 14: 1NO4NC 32: 3NO2NC 23: 2NO3NC
installed: 42: 4NO2NC 24: 2NO4NC 33: 3NO3NC
LA39-A/B/C

No marking: normal ZC: trigger-type MR: rotary latching R: on-off button F: square button
button emergency stop button
mushroom button
D: illuminated button ZL: pulling-type X: short-handle two- RD: illuminated on-off XF: square short-handle
emergency stop button
position selector button two-position selector
T: latching button M: mushroom buttonXS: short-handle three- YS: three-position key XSF: square short-handle
Auxiliary order position selector switch three-position selector
5
code TD: illuminated MT: mushroom latching XD: illuminated two- CX: long-handle two- CXF: square long-handle
latching button button position selector position selector two-position selector
Z: emergency stop MD: illuminated XSD: illuminated three- CXS: long-handle three- CXSF: square long-handle
button mushroom button position selector position selector three-position selector
ZY: key resetting emergency stop button MTD: illuminated mushroom latching button Y: two-position key switch
No marking: no symbol mark Sxyz: standard symbol mark
6 Marking code
S99: with symbol mark (the content is as required by the customer)
Button sheet
7 Red-r Green-g Yellow-y White-w Blue-b Black-k rg: on-off button sheet
color
Action position of selector and key switch (f: left spring return, fu: right spring return, ffu: left and right spring return)
8 Action function
Key pulling-out position (a: left pulling out, ao: center pulling out, au: right pulling out)
No marking: no illumination 20: AC/DC 5V 21: AC/DC 6V 22: AC/DC 12V 15: AC/DC 15V
23: AC/DC 24V 16: AC/DC 30V 24: AC/DC 36V 25: AC/DC 48V 17: AC/DC 63V 18: AC/DC 75V
9 Voltage code
26: AC/DC 110V 27: AC/DC 127V 36: AC/DC 150V 28: AC/DC 220V 33: AC/DC 270V 35: AC/DC 440V
31: AC 220V 40: AC 230V 41: AC 240V 42: AC 250V 37: AC 270V 32: AC 380V
Head
10 No marking: default value With marking: mark the value as required
protection class
No marking: supply based on normal order code With marking: marked as required, the marked code is
11 Auxiliary code
composed of 1-10 numbers and letters, for marking supply information

◎ Technical feature
Momentary- AC-15 24V/10A 48V/10A 110V/5A DC-13 24V/3.6A 48V/1.8A
action type 220V/2.5A 380V/1.5A 660V/0.8A 110V/0.8A 220V/0.4A 440V/0.2A
Rated capacity Slow-action AC-15 24V/10A 48V/10A 110V/10A DC-13 24V/6A 48V/3A
type 220V/6A 380V/4A 660V/2A 110V/1A 220V/0.5A 440V/0.25A
Contact resistance Hard silver contact≤50mΩ (new value)
Power frequency
AC 1890V 50Hz · 1min
withstand voltage
Mechanical 3 million times for normal button, mushroom button and illuminated button, 100,000 times for latching button,
endurance 300,000 times for selector, 50,000 times for key switch and emergency stop button
Electrical endurance ≥600,000 times Action frequency: 1,200 times/hour
Conventional thermal
Ith 10A
current
Rated insulation
Ui 660V
voltage
Working temperature Ambient temperature -25℃ ~+55℃ Average temperature in 24h not over +35℃
Working humidity ≤90% RH, the relative humidity is not over 50% when the temperature exceeds 40℃
A type head: IP54 (IP40 for ZY key emergency stop button, ZL push-pull emergency stop button, Y/YS key switch, A3/A4/
Head protection class A5 selector and key switch) B type head: IP40 C type head: IP54 (IP40 for ZY key emergency stop button)
IP67 can be realized for LA39-A/B flush head round button with FI optional

Pushbutton/Indicator
LA39 / 06 LA39 Series Pushbutton/AD16 Series Indicator
◎ Component material

Head periphery Middle seat Head Contact point Switch enclosure Contact pin
AL Zn or PBT.PA PC AgNi PC Cu

A type operating head

Z1 Z2 Z3 Z4 Z5
Installation Installation Installation Installation Installation
middle seat middle seat middle seat middle seat

LA39-A/B/C
middle seat

B type operating head

C type operating head

◎ Hole dimensions
13.5

LA39-A LA39-B LA39-C LA39-A/B with keyway

LA39 / 07
 LA39 A / B / Cseries PUSHBUTTON

Φ 22 LA39-A series pushbutton selection

Working
Name Type Order code Color Dimension
status
Round button

Momentary LA39-A1- ■ / ▲

Latching LA39-A1- ■ T/ ▲
LA39-A/B/C

Momentary LA39-A1- ■ / ▲ -JW

Latching LA39-A1- ■ T/ ▲ -JW Red-r

Green-g Note: if the tolerance is not marked,
follow GB/T 1804 – class c
Yellow-y
White-w
High-position round button
Blue-b
Momentary LA39-A1- ■ / ▲ -H Black-k

Latching LA39-A1- ■ T/ ▲ -H

Momentary LA39-A1- ■ / ▲ -H-JW

Latching LA39-A1- ■ T/ ▲ -H-JW

Note: if the tolerance is not marked,
follow GB/T 1804 – class c

●
Indicate the number of NO/NC contacts at ■ before the slash.
●
Indicate the color at ▲ behind the slash.
●
If Z2, Z3, Z4 and Z5 middle seats are required during order, change A1 in the order code to A2, A3, A4 or A5.
Note

Please note that requirements on the thickness of the mounting plate change greatly when Z3 middle seat is
selected.
●
The finished latching button is equipped with F5 accessory.

Pushbutton/Indicator
LA39 / 08 LA39 Series Pushbutton/AD16 Series Indicator
 Φ 22 LA39-A series pushbutton selection
Working
Name Type Order code Color Light voltage Dimension
status
Illuminated round
button
Momentary LA39-A1- ■ D/ ▲★

Latching LA39-A1- ■ TD/ ▲★

LA39-A/B/C
Momentary LA39-A1- ■ D/ ▲★ -JW LED
light source:

21-AC/DC 6V
22-AC/DC 12V
Latching LA39-A1- ■ TD/ ▲★ -JW 23-AC/DC 24V Note: if the tolerance is not
Red-r marked, follow GB/T 1804 –
24-AC/DC 36V
Green-g class c
25-AC/DC 48V
Yellow-y
26-AC/DC 110V
High-position White-w
27-AC/DC 127V
illuminated round Blue-b
LA39-A1- ■ D/ ▲★ -H
button 28-AC/DC 220V
Momentary
33-AC/DC 270V
35-AC/DC 440V
31-AC 220V
40-AC 230V
Latching LA39-A1- ■ TD/ ▲★ -H 32-AC 380V

Momentary LA39-A1- ■ D/ ▲★ -H-JW

Latching LA39-A1- ■ TD/ ▲★ -H-JW

Note: if the tolerance is not
marked, follow GB/T 1804 –
class c

●
Indicate the number of NO/NC contacts at ■ before the slash.
●
Indicate the color at ▲ behind the slash and indicate the voltage grade of illuminated button at ★ .
●
The light sources of illuminated buttons are high brightness LED in pure color.
Note

●
If Z2, Z3, Z4 and Z5 middle seats are required during order, change A1 in the order code to A2, A3, A4 or A5.
Please note that requirements on the thickness of the mounting plate change greatly when Z3 middle seat is selected.
●
The finished latching button is equipped with F5 accessory.

LA39 / 09
 LA39 A / B / Cseries PUSHBUTTON

Φ 22 LA39-A series pushbutton selection

Working
Name Type Order code Color Light voltage Dimension
status
Mushroom button

Momentary LA39-A1- ■ M/ ▲

Latching LA39-A1- ■ MT/ ▲ Non-

transparent
Note: Φ40、Φ60
LA39-A/B/C

Red-r
Green-g
Yellow-y
Momentary LA39-A1- ■ M/ ▲ -JW Black-k

Latching LA39-A1- ■ MT/ ▲ -JW Note: if the tolerance is not

marked, follow GB/T 1804 –
Note: Φ40、Φ60 class c

Illuminated mushroom
button
Momentary LA39-A1- ■ MD/ ▲★ LED
light source:

21-AC/DC 6V
22-AC/DC 12V
Latching LA39-A1- ■ MTD/ ▲★ 23-AC/DC 24V
Transparent
24-AC/DC 36V
Note: Φ40、Φ60 Red-r
25-AC/DC 48V
Green-g
26-AC/DC 110V
Yellow-y
27-AC/DC 127V
White-w
LA39-A1- ■ MD/ ▲★ -JW
28-AC/DC 220V
Momentary
33-AC/DC 270V
35-AC/DC 440V
31-AC 220V
40-AC 230V
Latching LA39-A1- ■ MTD/ ▲★ -JW 32-AC 380V Note: if the tolerance is not
marked, follow GB/T 1804 –
Note: Φ40、Φ60 class c

●
Indicate the number of NO/NC contacts at ■ before the slash.
●
Indicate the color at ▲ behind the slash and indicate the voltage grade of illuminated button at .
●
The light sources of illuminated buttons are high brightness LED in pure color.
Note

●
If Z2, Z3, Z4 and Z5 middle seats are required during order, change A1 in the order code to A2, A3, A4 or A5.
●
The finished latching button is equipped with F5 accessory.
Note: if Φ 60 mushroom head is required, please mark “-60” behind the order code, no marking for Φ 40 ones.

Pushbutton/Indicator
LA39 / 10 LA39 Series Pushbutton/AD16 Series Indicator
 Φ 22 LA39-A series pushbutton selection
Working
Name Type Order code Color Dimension
status
Rotary latching type inching
mushroom button

LA39-A1- ■ MR/ ▲

Non-
transparent
Inching by
Note: Φ40 Red-r

LA39-A/B/C
pressing,
latching by Green-g
rotating
Yellow-y
Black-k

LA39-A1- ■ MR/ ▲ -JW

Note: if the tolerance is not marked,

Note: Φ40 follow GB/T 1804 – class c

Emergency stop button

LA39-A1-R ■ Z/ ▲

Latching by
Note: Φ40 pressing, Transparent
resetting
by rotating Red-r
clockwise

LA39-A1-R ■ Z/ ▲ -JW

Note: if the tolerance is not marked,

Note: Φ40 follow GB/T 1804 – class c

●
Indicate the number of NO/NC contacts at ■ before the slash.
●
Indicate the color at ▲ behind the slash.
Note

●
If Z2, Z3, Z4 and Z5 middle seats are required during order, change A1 in the order code to A2, A3, A4 or A5.
●
The finished latching button is equipped with F5 accessory.
Note: the emergency stop button adopts slow-action base.

LA39 / 11
 LA39 A / B / Cseries PUSHBUTTON

Φ 22 LA39-A series pushbutton selection

Working
Name Type Order code Color Dimension
status
Emergency stop button

LA39-A1-R ■ Z1/ ▲

Latching by
Note: Φ40、Φ60 pressing,
LA39-A/B/C

resetting
by rotating
clockwise

LA39-A1-R ■ Z1/ ▲ -JW

Note: if the tolerance is not marked,

Note: Φ40、Φ60 follow GB/T 1804 – class c
Non-transparent
Red-r
Key resetting emergency
stop button

LA39-A1-R ■ ZY/ ▲

Latching by
Note: Φ40 pressing,
resetting by
rotating the
key clockwise

LA39-A1-R ■ ZY/ ▲ -JW

Note: if the tolerance is not marked,

Note: Φ40 follow GB/T 1804 – class c

●
Indicate the number of NO/NC contacts at ■ before the slash.
●
Indicate the color at ▲ behind the slash.
Note

●
If Z2, Z3, Z4 and Z5 middle seats are required during order, change A1 in the order code to A2, A3, A4 or A5.
Note: if Φ 60 mushroom head is required, please mark “-60” behind the order code, no marking for Φ 40 ones.
The emergency stop button adopts slow-action base.

Pushbutton/Indicator
LA39 / 12 LA39 Series Pushbutton/AD16 Series Indicator
 Φ 22 LA39-A series pushbutton selection
Working
Name Type Order code Color Dimension
status
Pulling type emergency stop
button

LA39-A1-R ■ ZL/ ▲

LA39-A/B/C
Latching by
Note: Φ40 pressing,
resetting by
pulling

LA39-A1-R ■ ZL/ ▲ -JW Non-transparent

Red-r

Note: if the tolerance is not marked,

Note: Φ40 follow GB/T 1804 – class c

Trigger-type emergency
stop button

Latching
triggered by
LA39-A1-R ■ ZC/ ▲
pressing,
resetting
by rotating
clockwise

Note: if the tolerance is not marked,

Note: Φ40 follow GB/T 1804 – class c

●
Indicate the number of NO/NC contacts at ■ before the slash.
●
Indicate the color at ▲ behind the slash.
Note

●
If Z2, Z3, Z4 and Z5 middle seats are required during order, change A1 in the order code to A2, A3, A4 or A5.
Note: the emergency stop button adopts slow-action base.

LA39 / 13
 LA39 A / B / Cseries PUSHBUTTON

Φ 22 LA39-A series pushbutton selection

Name Type Handle position & order code Color Dimension

Short-handle
Two-
selector position
LA39-A1- ■ X/ ▲ LA39-A1- ■ X/ ▲ f LA39-A1- ■ X/ ▲ fu

Three- LA39-A1- ■ XS/ ▲ LA39-A1- ■ XS/ ▲ ffu

position

LA39-A1- ■ XS/ ▲ f LA39-A1- ■ XS/ ▲ fu

LA39-A/B/C

Two-
position
LA39-A1- ■ X/ ▲ -JW LA39-A1- ■ X/ ▲ f-JW LA39-A1- ■ X/ ▲ fu-JW

Three- LA39-A1- ■ XS/ ▲ -JW LA39-A1- ■ XS/ ▲ ffu-JW

position
Note: if the tolerance is not
Red-r marked, follow GB/T 1804 –
LA39-A1- ■ XS/ ▲ f-JW LA39-A1- ■ XS/ ▲ fu-JW
class c
Green-g
Yellow-y
Long-handle
Two- Black-k
selector position
LA39-A1- ■ CX/ ▲ LA39-A1- ■ CX/ ▲ f LA39-A1- ■ CX/ ▲ fu

Three- LA39-A1- ■ CXS/ ▲ LA39-A1- ■ CXS/ ▲ ffu

position

LA39-A1- ■ CXS/ ▲ f LA39-A1- ■ CXS/ ▲ fu

Two-
position
LA39-A1- ■ CX/ ▲ -JW LA39-A1- ■ CX/ ▲ f-JW LA39-A1- ■ CX/ ▲ fu-JW

Three- LA39-A1- ■ CXS/ ▲ -JW LA39-A1- ■ CXS/ ▲ ffu-JW

position
Note: if the tolerance is not
marked, follow GB/T 1804 –
LA39-A1- ■ CXS/ ▲ f-JW LA39-A1- ■ CXS/ ▲ fu-JW
class c

●
Indicate the number of NO/NC contacts at ■ before the slash.
●
Indicate the color at ▲ behind the slash.
Note

●
If Z2, Z3, Z4 and Z5 middle seats are required during order, change A1 in the order code to A2, A3, A4 or A5.
Note: when the selector is equipped with Z3 middle seat, the anti-rotation washer shall be added.

Pushbutton/Indicator
LA39 / 14 LA39 Series Pushbutton/AD16 Series Indicator
 Φ 22 LA39-A series pushbutton selection

Name Type Handle position & order code Color Light voltage Dimension

Illuminated selector
Two-
position
LA39-A1- ■ XD/ ▲★ LA39-A1- ■ XD/ ▲★ fu

LED
light source:

LA39-A1- ■ XSD/ ▲★ LA39-A1- ■ XSD/ ▲★ ffu 21-AC/DC 6V

Three-
position 22-AC/DC 12V

LA39-A/B/C
23-AC/DC 24V
Red-r 24-AC/DC 36V
LA39-A1- ■ XSD/ ▲★ f LA39-A1- ■ XSD/ ▲★ fu
Green-g 25-AC/DC 48V
Yellow-y 26-AC/DC 110V
White-w 27-AC/DC 127V
Two- Blue-b
position 28-AC/DC 220V
LA39-A1- ■ XD/ ▲★ -JW LA39-A1- ■ XD/ ▲★ fu-JW
33-AC/DC 270V
35-AC/DC 440V
31-AC 220V
40-AC 230V
32-AC 380V
LA39-A1- ■ XSD/ ▲★ -JW LA39-A1- ■ XSD/ ▲★ ffu-JW
Three-
position

Note: if the tolerance is

not marked, follow GB/T
LA39-A1- ■ XSD/ ▲★ f-JW LA39-A1- ■ XSD/ ▲★ fu-JW 1804 – class c

Key switch
Key taking-out position

Two- LA39-A1- ■ Y/ Left Center Right

position
a ao au

LA39-A1- ■ Y/f LA39-A1- ■ Y/fu

Each pulling-out position

can be customized in case
Three- LA39-A1- ■ YS/ LA39-A1- ■ YS/ffu of any special requirement.
Note: the key taking-out
position
position cannot be the
Note: #1-16 can be momentary position for Note: if the tolerance is
selected if the keys do momentary key switch. not marked, follow GB/T
not match each other LA39-A1- ■ YS/f LA39-A1- ■ YS/fu
1804 – class c

●
Indicate the number of NO/NC contacts at ■ before the slash.
●
Indicate the color at ▲ behind the slash and indicate the voltage grade of illuminated button at .
Note

●
The light sources of illuminated buttons are high brightness LED in pure color.
●
If Z2, Z3, Z4 and Z5 middle seats are required during order, change A1 in the order code to A2, A3, A4 or A5.
●
When the selector is equipped with Z3 middle seat, the anti-rotation washer shall be added.

LA39 / 15
 LA39 A / B / Cseries PUSHBUTTON

Φ 22 LA39-B series pushbutton selection

Working
Name Type Order code Color Light voltage Dimension
status
Round button

Momentary LA39-B2- ■ / ▲

Note: if the
Latching LA39-B2- ■ T/ ▲ Red-r
tolerance is not
marked, follow
Green-g GB/T 1804 –
class c
LA39-A/B/C

Yellow-y
White-w
High-position round
button Blue-b
Momentary LA39-B2- ■ / ▲ -H Black-k

Note: if the
Latching LA39-B2- ■ T/ ▲ -H tolerance is not
marked, follow
GB/T 1804 –
class c

Illuminated round
button
Momentary LA39-B2- ■ D/ ▲★ LED
light source:

21-AC/DC 6V
22-AC/DC 12V
Latching LA39-B2- ■ TD/ ▲★ 23-AC/DC 24V
Note: if the
tolerance is not
Red-r marked, follow
24-AC/DC 36V GB/T 1804 –
Green-g class c
25-AC/DC 48V
Yellow-y
26-AC/DC 110V
High-position White-w
27-AC/DC 127V
illuminated round Blue-b
LA39-B2- ■ D/ ▲★ -H
button 28-AC/DC 220V
Momentary
33-AC/DC 270V
35-AC/DC 440V
31-AC 220V
40-AC 230V
LA39-B2- ■ TD/ ▲★ -H
Note: if the
Latching 32-AC 380V tolerance is not
marked, follow
GB/T 1804 –
class c

●
Indicate the number of NO/NC contacts at ■ before the slash.
●
Indicate the color at ▲ behind the slash and indicate the voltage grade of illuminated button at .
Note

●
The light sources of illuminated buttons are high brightness LED in pure color.
●
If Z1, Z3, Z4 and Z5 middle seats are required during order, change B2 in the order code to B1, B3, B4 or B5.
●
The finished latching button is equipped with F5 accessory.

Pushbutton/Indicator
LA39 / 16 LA39 Series Pushbutton/AD16 Series Indicator
 Φ 22 LA39-B series pushbutton selection
Working
Name Type Order code Color Light voltage Dimension
status
Square button
Red-r
Green-g

LA39-B2- ■ F/ ▲
Yellow-y
Momentary
White-w
Blue-b
Black-k Note: if the
tolerance is not
marked, follow GB/
T 1804 – class c

LA39-A/B/C
LED light source:
Illuminated square 21-AC/DC 6V
button 22-AC/DC 12V
23-AC/DC 24V
Red-r 24-AC/DC 36V
Green-g 25-AC/DC 48V
LA39-B2- ■ DF/ ▲★
26-AC/DC 110V
Momentary Yellow-y 27-AC/DC 127V
White-w 28-AC/DC 220V
33-AC/DC 270V
Blue-b 35-AC/DC 440V
31-AC 220V Note: if the
tolerance is not
40-AC 230V marked, follow GB/
32-AC 380V T 1804 – class c

Name Type Handle position & order code Color Dimension

Short-handle selector
Two-
position
LA39-B2- ■ XF/ ▲ LA39-B2- ■ XF/ ▲ f LA39-B2- ■ XF/ ▲ fu

Three- LA39-B2- ■ XSF/ ▲ LA39-B2- ■ XSF/ ▲ ffu

position
Note: if the
Red-r tolerance is not
marked, follow GB/
LA39-B2- ■ XSF/ ▲ f LA39-B2- ■ XSF/ ▲ fu Green-g T 1804 – class c
Yellow-y
Long-handle selector
Two- Black-k
position
LA39-B2- ■ CXF/ ▲ LA39-B2- ■ CXF/ ▲ f LA39-B2- ■ CXF/ ▲ fu

Three- LA39-B2- ■ CXSF/ ▲ LA39-B2- ■ CXSF/ ▲ ffu

position
Note: if the
tolerance is not
marked, follow GB/
LA39-B2- ■ CXSF/ ▲ f LA39-B2- ■ CXSF/ ▲ fu T 1804 – class c

●
Indicate the number of NO/NC contacts at ■ before the slash.
●
Indicate the color at ▲ behind the slash and indicate the voltage grade of illuminated button at .
Note

●
The light sources of illuminated buttons are high brightness LED in pure color.
●
If Z1, Z3, Z4 and Z5 middle seats are required during order, change B2 in the order code to B1, B3, B4 or B5.
●
The finished latching button is equipped with F5 accessory.

LA39 / 17
 LA39 A / B / C
series PUSHBUTTON

Φ 22 LA39-B series pushbutton selection

Working
Name Type Order code Color Light voltage Dimension
status
Mushroom button
Momentary LA39-B2- ■ M/ ▲ Non-
transparent
Red-r
Green-g
Yellow-y
Latching LA39-B2- ■ MT/ ▲ Black-k Note: if the tolerance
Note: Φ40、Φ60
is not marked, follow
GB/T 1804 – class c
LA39-A/B/C

Illuminated mushroom LED light source:

21-AC/DC 6V
button 22-AC/DC 12V
Momentary LA39-B2- ■ MD/ ▲★ Transparent
23-AC/DC 24V
24-AC/DC 36V
Red-r 25-AC/DC 48V
26-AC/DC 110V
Green-g 27-AC/DC 127V
Yellow-y 28-AC/DC 220V
33-AC/DC 270V
Latching LA39-B2- ■ MTD/ ▲★ White-w 35-AC/DC 440V
31-AC 220V Note: if the tolerance
40-AC 230V is not marked, follow
Note: Φ40、Φ60 32-AC 380V
GB/T 1804 – class c

Emergency stop button

LA39-B2-R ■ Z/ ▲

Latching by
pressing,
Note: Φ40 resetting
by rotating
clockwise

LA39-B2-R ■ Z1/ ▲ Note: if the tolerance

Non- is not marked, follow
GB/T 1804 – class c
transparent
Note: Φ40、Φ60 Red-r
Key-resetting emergency
stop button
Latching by
pressing,
LA39-B2-R ■ ZY/ ▲
resetting
by rotating
the key
clockwise
Note: if the tolerance
is not marked, follow
Note: Φ40 GB/T 1804 – class c

● Indicate the number of NO/NC contacts at ■ before the slash, indicate the color at ▲ behind the slash and indicate
the voltage grade of illuminated button at ★.
● The light sources of illuminated buttons are high brightness LED in pure color.
Note

● If Z1, Z3, Z4 and Z5 middle seats are required during order, change B2 in the order code to B1, B3, B4 or B5.
● The finished latching button is equipped with F5 accessory.
Note: if Φ 60 mushroom head is required, please mark “- 60” behind the order code, no marking for Φ 40 ones.
The emergency stop button adopts slow-action base.

Pushbutton/Indicator
LA39 / 18 LA39 Series Pushbutton/AD16 Series Indicator
 Φ 22 LA39-B series pushbutton selection

Name Type Handle position & order code Color Light voltage Dimension

Short-handle
Two-
selector position
LA39-B2- ■ X/ ▲ LA39-B2- ■ X/ ▲ f LA39-B2- ■ X/ ▲ fu

Three- LA39-B2- ■ XS/ ▲ LA39-B2- ■ XS/ ▲ ffu

position Note: if the
tolerance is not
marked, follow
Red-r GB/T 1804 –
LA39-B2- ■ XS/ ▲ f LA39-B2- ■ XS/ ▲ fu class c

LA39-A/B/C
Green-g
Long-handle Yellow-y
Two- Black-k
selector position
LA39-B2- ■ CX/ ▲ LA39-B2- ■ CX/ ▲ f LA39-B2- ■ CX/ ▲ fu

LA39-B2- ■ CXS/ ▲ LA39-B2- ■ CXS/ ▲ ffu

Three-
position Note: if the
tolerance is not
marked, follow
GB/T 1804 –
class c
LA39-B2- ■ CXS/ ▲ f LA39-B2- ■ CXS/ ▲ fu

LED light
Illuminated Two- source:
selector position 21-AC/DC 6V
LA39-B2- ■ XD/ ▲★ LA39-B2- ■ XD/ ▲★ fu 22-AC/DC 12V
Red-r 23-AC/DC 24V
24-AC/DC 36V
Green-g 25-AC/DC 48V
Yellow-y 26-AC/DC 110V
LA39-B2- ■ XSD/ ▲★ LA39-B2- ■ XSD/ ▲★ ffu 27-AC/DC 127V
Three- White-w 28-AC/DC 220V
position Blue-b 33-AC/DC 270V Note: if the
35-AC/DC 440V tolerance is not
marked, follow
31-AC 220V GB/T 1804 –
LA39-B2- ■ XSD/ ▲★ f LA39-B2- ■ XSD/ ▲★ fu 40-AC 230V class c
32-AC 380V

Key switch Key taking-out position

Two-
position
LA39-B2- ■ T/ LA39-B2- ■ Y/f LA39-B2- ■ Y/fu
Left Center Right

a ao au

Each pulling-out position

LA39-B2- ■ YS/ LA39-B2- ■ YS/ffu can be customized in case
Three-
position of any special requirement. Note: if the
Note: the key taking-out tolerance is not
position cannot be the marked, follow
momentary position for GB/T 1804 –
LA39-B2- ■ YS//f LA39-B2- ■ YS/fu class c
momentary key switch.

●
Indicate the number of NO/NC contacts at ■ before the slash.
●
Indicate the color at ▲ behind the slash and indicate the voltage grade of illuminated button at .
Note

●
The light sources of illuminated buttons are high brightness LED in pure color.
●
If Z1, Z3, Z4 and Z5 middle seats are required during order, change B2 in the order code to B1, B3, B4 or B5.
●
When the selector and key switch are equipped with Z3 middle seats, the anti-rotation washer shall be added.

LA39 / 19
 LA39 A / B / Cseries PUSHBUTTON

Φ 22 LA39-B series pushbutton selection

Button Light Overall & hole
Name Type Order code Light voltage Note
color color dimensions
On-off button

1. The action
of contacts is
momentary
type.
2. The
contact can
LA39-B2- ■ R/ ▲▲
LA39-A/B/C

Note: if the tolerance is be added or

not marked, follow GB/T changed as
1804 – class c needed.
3. Used for
the start and
stop control
of motor or

Hole dimensions
load.
Red-r
Green-g
White-w
Black-k

Illuminated on-off For button

button sheet
lettering LED
color, see
note ①
light source: 1. The action
of contacts is
21-AC/DC 6V momentary
type.
22-AC/DC 12V 2. The
23-AC/DC 24V contact can
Red-r be added or
24-AC/DC 36V
Green-g changed as
25-AC/DC 48V
LA39-B2- ■ R/ ▲▲ □ ★ Yellow-y Note: if the tolerance is needed, and
26-AC/DC 110V not marked, follow GB/T illumination
White-w 1804 – class c occurs in the
27-AC/DC 127V
Blue-b middle of
28-AC/DC 220V two buttons.
33-AC/DC 270V 3. Used for
35-AC/DC 440V the start and
Hole dimensions

stop control
31-AC 220V of motor or
40-AC 230V load.
32-AC 380V

●
Indicate the number of NO/NC contacts at ■ before the slash.
●
Indicate the color of button sheet sequentially at ▲ behind the slash (two letters).
●
If illuminated button is required, add LED color and voltage code behind, indicating light color at □ , and the voltage
Note

grade of illuminated button at .

●
If Z1, Z3, Z4 and Z5 middle seats are required during order, change B2 in the order code to B1, B3, B4 or B5.
Note ① : button sheet lettering color: stop symbol “○” in red and white, start symbol “I” in green and black;
if the letters need to be customized, add S99 before / and attach a figure.

Pushbutton/Indicator
LA39 / 20 LA39 Series Pushbutton/AD16 Series Indicator
 Φ 30 LA39-C series pushbutton selection
Working
Name Type Order code Color Dimension
status
Round button

Momentary LA39-C1- ■ / ▲

Latching LA39-C1- ■ T/ ▲

LA39-A/B/C
Momentary LA39-C1- ■ / ▲ -JW

Latching LA39-C1- ■ T/ ▲ -JW Red-r Note: if the tolerance is not

marked, follow GB/T 1804 –
Green-g
class c
Yellow-y
White-w
High0position round
button Blue-b
Momentary LA39-C1- ■ / ▲ -H Black-k

Latching LA39-C1- ■ T/ ▲ -H

Momentary LA39-C1- ■ / ▲ -H-JW

Latching LA39-C1- ■ T/ ▲ -H-JW Note: if the tolerance is not

marked, follow GB/T 1804 –
class c

●
Indicate the number of NO/NC contacts at ■ before the slash.
●
Indicate the color at ▲ behind the slash.
Note

●
The light sources of illuminated buttons are high brightness LED in pure color.
●
If Z2, Z3, Z4 and Z5 middle seats are required during order, change C1 in the order code to C2, C3, C4 or C5.

LA39 / 21
 LA39 A / B / Cseries PUSHBUTTON

Φ 30 LA39-C series pushbutton selection

Working
Name Type Order code Color Light voltage Dimension
status
Illuminated round
button
Momentary LA39-C1- ■ D/ ▲★

Latching LA39-C1- ■ TD/ ▲★

LA39-A/B/C

Momentary LA39-C1- ■ D/ ▲★ -JW LED

light source:

21-AC/DC 6V
22-AC/DC 12V
Latching LA39-C1- ■ TD/ ▲★ -JW 23-AC/DC 24V
Red-r
24-AC/DC 36V Note: if the tolerance is not marked,
Green-g follow GB/T 1804 – class c
25-AC/DC 48V
Yellow-y
26-AC/DC 110V
High-position White-w
27-AC/DC 127V
illuminated round Blue-b
LA39-C1- ■ D/ ▲★ -H
button 28-AC/DC 220V
Momentary
33-AC/DC 270V
35-AC/DC 440V
31-AC 220V
40-AC 230V
Latching LA39-C1- ■ TD/ ▲★ -H 32-AC 380V

Momentary LA39-C1- ■ D/ ▲★ -H-JW

Latching LA39-C1- ■ TD/ ▲★ -H-JW

Note: if the tolerance is not marked,

follow GB/T 1804 – class c

●
Indicate the number of NO/NC contacts at ■ before the slash.
●
Indicate the color at ▲ behind the slash and indicate the voltage grade of illuminated button at .
Note

●
The light sources of illuminated buttons are high brightness LED in pure color.
●
If Z2, Z3, Z4 and Z5 middle seats are required during order, change C1 in the order code to C2, C3, C4 or C5.

Pushbutton/Indicator
LA39 / 22 LA39 Series Pushbutton/AD16 Series Indicator
 Φ 30 LA39-C series pushbutton selection
Working
Name Type Order code Color Light voltage Dimension
status
Mushroom button

Momentary LA39-C1- ■ M/ ▲

Latching LA39-C1- ■ MT/ ▲ Non-

transparent
Note: Φ40、Φ60 Red-r

LA39-A/B/C
Green-g
Yellow-y
Momentary LA39-C1- ■ M/ ▲ -JW Black-k

Latching LA39-C1- ■ MT/ ▲ -JW

Note: if the tolerance is not marked,

Note: Φ40、Φ60 follow GB/T 1804 – class c

Illuminated mushroom
button
Momentary LA39-C1- ■ MD/ ▲★ LED
light source:

21-AC/DC 6V
22-AC/DC 12V
Latching LA39-C1- ■ MTD/ ▲★ Transparent 23-AC/DC 24V
Red-r 24-AC/DC 36V
Note: Φ40、Φ60 Green-g 25-AC/DC 48V
Yellow-y 26-AC/DC 110V
White-w 27-AC/DC 127V

LA39-C1- ■ MD/ ▲★ -JW

28-AC/DC 220V
Momentary
33-AC/DC 270V
35-AC/DC 440V
31-AC 220V
40-AC 230V
Latching LA39-C1- ■ MTD/ ▲★ -JW 32-AC 380V

Note: if the tolerance is not marked,

Note: Φ40、Φ60 follow GB/T 1804 – class c

●
Indicate the number of NO/NC contacts at ■ before the slash.
●
Indicate the color at ▲ behind the slash and indicate the voltage grade of illuminated button at .
Note

●
The light sources of illuminated buttons are high brightness LED in pure color.
●
If Z2, Z3, Z4 and Z5 middle seats are required during order, change C1 in the order code to C2, C3, C4 or C5.
Note: if Φ 60 mushroom head is required, please mark “-60” behind the order code, no marking for Φ 40 ones.

LA39 / 23
 LA39 A / B / Cseries PUSHBUTTON

Φ 30 LA39-C series pushbutton selection

Working
Name Type Order code Color Dimension
status
Emergency stop button

LA39-C1-R ■ Z/ ▲

Latching by
Note: Φ40、Φ60 pressing,
LA39-A/B/C

resetting
by rotating
clockwise

LA39-C1-R ■ Z/ ▲ -JW

Note: if the tolerance is not marked, follow

Note: Φ40、Φ60
GB/T 1804 – class c
Non-transparent
Red-r
Key resetting
emergency stop button

LA39-C1-R ■ ZY/ ▲

Latching by
Note: Φ40
pressing,
resetting by
rotating the
key clockwise

LA39-C1-R ■ ZY/ ▲ -JW

Note: if the tolerance is not marked, follow

Note: Φ40 GB/T 1804 – class c

●
Indicate the number of NO/NC contacts at ■ before the slash.
●
Indicate the color at ▲ behind the slash.
Note

●
If Z2, Z3, Z4 and Z5 middle seats are required during order, change C1 in the order code to C2, C3, C4 or C5.
Note: if Φ 60 mushroom head is required, please mark “-60” behind the order code, no marking for Φ 40 ones.
The emergency stop button adopts slow-action base.

Pushbutton/Indicator
LA39 / 24 LA39 Series Pushbutton/AD16 Series Indicator
 Φ 30 LA39-C series pushbutton selection

Name Type 手柄位置及 Order code Color Dimension

Short-handle
Two-
selector position
LA39-C1- ■ X/ ▲ LA39-C1- ■ X/ ▲ f LA39-C1- ■ X/ ▲ fu

Three- LA39-C1- ■ XS/ ▲ LA39-C1- ■ XS/ ▲ ffu

position

LA39-C1- ■ XS/ ▲ f LA39-C1- ■ XS/ ▲ fu

LA39-A/B/C
Two-
position
LA39-C1- ■ X/ ▲ -JW LA39-C1- ■ X/ ▲ f-JW LA39-C1- ■ X/ ▲ fu-JW

Three- LA39-C1- ■ XS/ ▲ -JW LA39-C1- ■ XS/ ▲ ffu-JW

position
Note: if the tolerance is not
Red-r marked, follow GB/T 1804 – class
c
LA39-C1- ■ XS/ ▲ f-JW LA39-C1- ■ XS/ ▲ fu-JW Green-g
Yellow-y
Long-handle
Two- Black-k
selector position
LA39-C1- ■ CX/ ▲ LA39-C1- ■ CX/ ▲ f LA39-C1- ■ CX/ ▲ fu

Three- LA39-C1- ■ CXS/ ▲ LA39-C1- ■ CXS/ ▲ ffu

position

LA39-C1- ■ CXS/ ▲ f LA39-C1- ■ CXS/ ▲ fu

Two-
position
LA39-C1- ■ CX/ ▲ -JW LA39-C1- ■ CX/ ▲ f-JW LA39-C1- ■ CX/ ▲ fu-JW

Three- LA39-C1- ■ CXS/ ▲ -JW LA39-C1- ■ CXS/ ▲ ffu-JW

position
Note: if the tolerance is not
marked, follow GB/T 1804 – class
LA39-C1- ■ CXS/ ▲ f-JW LA39-C1- ■ CXS/ ▲ fu-JW c

●
Indicate the number of NO/NC contacts at ■ before the slash.
Indicate the color at ▲ behind the slash.
Note

●
If Z2, Z3, Z4 and Z5 middle seats are required during order, change C1 in the order code to C2, C3, C4 or C5.

LA39 / 25
 LA39 A / B / Cseries PUSHBUTTON

Φ 30 LA39-C series pushbutton selection

Name Type Handle position & order code Color Light voltage Dimension
LED
Short-handle
illuminated light source:
selector Two-
position 21-AC/DC 6V
LA39-C1- ■ XD/ ▲★ LA39-C1- ■ XD/ ▲★ f LA39-C1- ■ XD/ ▲★ fu 22-AC/DC 12V
23-AC/DC 24V
Red-r
24-AC/DC 36V
Green-g
25-AC/DC 48V
Yellow-y
26-AC/DC 110V
White-w
27-AC/DC 127V
LA39-C1- ■ XSD/ ▲★ LA39-C1- ■ XSD/ ▲★ ffu
LA39-A/B/C

Three- Blue-b
28-AC/DC 220V
position
33-AC/DC 270V
35-AC/DC 440V
31-AC 220V
40-AC 230V Note: if the tolerance is not
LA39-C1- ■ XSD/ ▲★ f LA39-C1- ■ XSD/ ▲★ fu marked, follow GB/T 1804 –
32-AC 380V class c

Key switch
Two- Key taking-out position
position
Left Center Right
LA39-C1- ■ Y/ LA39-C1- ■ Y/f LA39-C1- ■ Y/fu

a ao au

LA39-C1- ■ YS/ LA39-C1- ■ YS/ffu Each pulling-out position

Three- can be customized in case
position of any special requirement.
Note: the key taking-out
position cannot be the
momentary position for
momentary key switch. Note: if the tolerance is not
marked, follow GB/T 1804 –
LA39-C1- ■ YS/f LA39-C1- ■ YS/fu class c

●
Indicate the number of NO/NC contacts at ■ before the slash.
●
Indicate the color at ▲ behind the slash and indicate the voltage grade of illuminated button at .
Note

●
The light sources of illuminated buttons are high brightness LED in pure color.
●
If Z2, Z3, Z4 and Z5 middle seats are required during order, change C1 in the order code to C2, C3, C4 or C5.

Pushbutton/Indicator
LA39 / 26 LA39 Series Pushbutton/AD16 Series Indicator
◎ Installation instructions

Insert the operating head into the installation hole from the front of the panel, screw it into the middle seat at
the back of the panel, and then tighten the set screws at both ends evenly (do not use too much force, with
the maximum torque of 0.25 N.m). If the panel is made of plastic and other non-metallic materials, the panel
can be padded with a mounting plate (see Annex F5) before installation. If the diameter of the installation
hole is 25mm, the panel can be padded with a Φ25 mounting plate (see Annex F6) before installation.
For Z1 middle-seat button, the switching element can be installed together with the middle seat.
For Z2 middle-seat button, the switching element shall be removed before installing the middle seat.
For Z3 middle-seat button, the switching element shall be removed first. Insert the middle seat into the head,
then turn the middle seat clockwise, and then tighten the nuts on the middle seat.
Note: If the button is found to be stuck after installation, the two set screws in the middle seat shall be
adjusted to keep the tightness consistent, so as to remove blocking.

The switching element can be directly Removal of

LA39-A/B/C
buckled, and the symbol mark at the switching element
head can be directly installed at the front or lamp holder:
(usually installed at the factory). If the Lift the hasp of the
illuminated button is installed, the lamp lock installation
holder shall be buckled first, and then system with a
the switching element shall be buckled. screwdriver to
disassemble the
Note: After installation, check whether components that
the hasp of the switching element is have been tightly
fully engaged. installed at will.

Tip: When installing the selector, the white point of the short handle and the pointed end of the long handle shall face upwards.

◎ Hole dimensions
Type A & B normal button, illuminated Type A & B mushroom button and Type C normal button, illuminated Type C mushroom button and long-
button, key switch and selector long-handle selector button, key switch and selector handle selector
Min. 50

Min. 50

Min. 60

Min. 60

Min. 42 Min. 50
Min. 30 Min. 40
Note: The min. size is 35×50 when Z3/Z4/
Z5 middle seat is selected for installation

◎ Functional diagram of selector and key switch on-off elements

Two-position Three-position Three-position special function
Contact lettering label (0 bit) Contact code Contact lettering label (0 bit) Contact code Contact lettering label (0 bit) Contact code
Connected

2NO

2NO

Note
Indicates contact closed
Indicates contact disconnected
(0 bit): indicates the position of original on-off state

Contact lettering label

The numbers of contact terminals are represented by two digits, with "1" on tens digit representing the first pair of contacts on the first switching element and
"2" on tens digit representing the second pair of contacts on the first switching element, and with "1, 2" on units digit representing two terminals of normally
closed contact, and "3, 4" on units digit representing two terminals of normally open contact.

LA39 / 27
 LA39 A / B / C
series PUSHBUTTON

◎ LA39 series pushbutton accessories

Name Type Order code Material Function Dimension

Installed at the head of button,

Seal cover F1 Silica gel waterproof and dustproof.
Protection class is up to IP67.

Installed at the head of button,

Stainless
LA39-A/B/C

Protective cover F2
steel
to prevent collision and
misoperation.

Installed at the head of the flat-

head round button to prevent
F3-1
collision and misoperation. It
can be blocked.

Installed at the head of short-

handle selector, illuminated
selector and key switch,
Protective cover F3-2 Plastic
to prevent collision and
misoperation. It can be
blocked.

Installed at the head of Φ40

mushroom button, Φ40
emergency stop button and
F3-3 key resetting emergency stop
button, to prevent collision
and misoperation. It can be
blocked.

F4 Installed behind the connecting

screws of switching elements,
Protective cover Plastic +
to prevent electric shock and
for joint silica gel
play a certain role in dust
F4a prevention.

When the chassis panel is

Ф22 mounting made of plastic, a mounting
F5
plate plate shall be installed to
improve the strength.

Q235

Ф25 mounting When the panel hole diameter

F6 is Φ25, a mounting plate shall
plate be installed.

Pushbutton/Indicator
LA39 / 28 LA39 Series Pushbutton/AD16 Series Indicator
◎ LA39 series pushbutton accessories

Name Type Order code Material Function Dimension

It is used for the

panel with a hole
Ф30 reducing Aluminum diameter of Φ30
F8
nut alloy and producing
ultra-thin button
effect.

LA39-A/B/C
It is installed in the
transparent button
Symbol mark for
F9 sheet of round
round button button for symbolic
indication.

It is installed in the
transparent button
Symbol mark for
F10 sheet of square
square button button for symbolic
indication.

Plastic
F11-
10 Writing
area: ：
25×10mm
Signage frame
F11-18
Writing
area: ： Hung on the
25×18mm pushbutton or F11-10 F11-18
indicator for
symbolic indication
or text description.
F12（round）

Signage plate

F12a
（square）
F12 F12a

F13-60
Ф60
Used for
Warning ring ABS emergency stop
button.
F13-90
Ф90
F13-60 F13-90

LA39 / 29
 LA39 A / B / C
series PUSHBUTTON

◎ LA39 series pushbutton accessories

Name Type Order code Material Function Dimension

F14a-40 Ф40
Applicable for LA39-M/MT/MD/MTD
series products with the head diameter of
40. (Note: due to structure limit, LA39-MR/
Z/ZY/ZL/ZC series products with the head
diameter of 40 may only use F14a-60)
F14a-60 Ф60
Applicable for LA39-M/MT/MD/MTD Used to enhance
series products with the head diameter eye-catching
Yellow F14a-40 F14a-60
of 60. tips and protect
guard
ring F14b-60 Ф60 mushroom button
LA39-A/B/C

Applicable for LA39-M/MT/MD/MTD/ from collision and

MR/Z/ misoperation.
ZY/ZL/ZC series products with the head
diameter of 40.

F14b-90 Ф90
Applicable for LA39-M/MT/MD/MTD/Z
series products with the head diameter ABS
of 60. F14b-60 F14b-90

The reducing
F15-25 Ф25 ring can be used
to install the
Reducing Φ22mm indicator/
ring pushbutton on the
panel with a hole
F15-30 Ф30 diameter of Φ25
or Φ30mm. F15-25 F15-30

It is used for
installing and
removing the
nuts of Z3, Z4
Handler F26
and Z5 middle
seats, reducing
the workload of
installers.

It can be used
Indicator to improve the
Ф22
installation quality
fastening F16 PC
and reduce the
wrench workload of
installers.

Indicator Used for symbolic

lettering or text
symbol F18 POM
description of
cover indicator.

Used for plugging

Ф22
Panel
F19 ABS reserved holes or
plug redundant holes.

Pushbutton/Indicator
LA39 / 30 LA39 Series Pushbutton/AD16 Series Indicator
◎ LA39 series pushbutton accessories

Name Type Order code Material Function Dimension

C01
Switch base C10
(momentary C02
action type) C20
C11 It is installed at the tail of the
button to increase or decrease
the contacts. Two-digit number
PC
in the model indicates the
number of normally open and
S01 normally closed contacts.
Switch base S10

LA39-A/B/C
(slow action S02
type) S20
S11

It is installed between the

middle seat and the base,
D/ ▲★
used for illuminated button.
In model, ▲ indicates color,
Lamp holder PA
and ★ indicates voltage grade
code.

Z1 Zn+PBT

Z2 PBT

Middle seat Z3 Used for fixing the button

Z4 PA

Z5

LA39 / 31
 LA39 A / B / C
series PUSHBUTTON

◎ LA39 series pushbutton accessories

Name Type Order code Note

LA39-A-/ ▲
LA39-B-/ ▲
Normal
LA39-C-/ ▲
button

LA39-A-T/ ▲
LA39-B-T/ ▲
Latching
LA39-C-T/ ▲
A B C
button

LA39-A-/ ▲ -JW
LA39-A/B/C

Normal
button LA39-C-/ ▲ -JW

Latching LA39-A-T/ ▲ -JW

A C button LA39-C-T/ ▲ -JW
Button Indicate the color at ▲
head behind the slash
High- LA39-A-/ ▲ -H
position LA39-B-/ ▲ -H
button LA39-C-/ ▲ -H

LA39-A-T/ ▲ -H
High-
LA39-B-T/ ▲ -H
position
LA39-C-T/ ▲ -H
A B C latching
button

LA39-A-/ ▲ -H-JW
High-
LA39-C-/ ▲ -H-JW
position
button

High-
position LA39-A-T/ ▲ -H-JW
A C latching LA39-C-T/ ▲ -H-JW
button

LA39-A-X/ ▲□
LA39-B-X/ ▲ □
Two-
LA39-C-X/ ▲□
position

LA39-A-XS/ ▲□
LA39-B-XS/ ▲□
Three-
LA39-C-XS/ ▲□
position
Indicate the color at ▲
A B C
Short-
handle behind the slash, indicate
selector the momentary form at □
Two- LA39-A-X/ ▲□ -JW
position LA39-C-X/ ▲□ -JW

Three- LA39-A-XS/ ▲□ -JW

A C position LA39-C-XS/ ▲□ -JW

Pushbutton/Indicator
LA39 / 32 LA39 Series Pushbutton/AD16 Series Indicator
◎ LA39 series pushbutton accessories

Name Type Order code Note

LA39-A-CX/ ▲□
LA39-B-CX/ ▲□
Two-
LA39-C-CX/ ▲□
position

LA39-A-CXS/ ▲□
LA39-B-CXS/ ▲□
Three-
LA39-C-CXS/ ▲□
position
A B C
Long-
handle
selector
Two- LA39-A-CX/ ▲□ -JW
LA39-C-CX/ ▲□ -JW

LA39-A/B/C
position

Three- LA39-A-CXS/ ▲□ -JW

position LA39-C-CXS/ ▲□ -JW Indicate the color
at ▲ behind the
A C

slash, indicate the

momentary form at
Two- LA39-A-XD/ ▲□ □
position LA39-C-XD/ ▲□

Three- LA39-A-XSD/ ▲□
position LA39-C-XSD/ ▲□
A C
Illuminated
selector
Two- LA39-A-XD/ ▲□ -JW
position LA39-C-XD/ ▲□ -JW

Three- LA39-A-XSD/ ▲□ -JW

A C position LA39-C-XSD/ ▲□ -JW

1. Indicate the button

sheet color at ▲
behind the slash.
LA39-B-R/ ▲▲
Normal
button 2. The action of
contacts is momentary
type.
On-off 3. The contact can
be added or changed
button as needed, and
illumination occurs
in the middle of two
LA39-B-RD/ ▲▲
Illuminated buttons.
button 4. Used for the start
and stop control of
motor or load.

Two- LA39-A-Y
position LA39-C-Y

Key switch

Three- LA39-A-YS
A C position LA39-C-YS

LA39 / 33
 LA39 A / B / C
series PUSHBUTTON

◎ LA39 series pushbutton accessories

Name Type Order code Note

LA39-A-M/ ▲
LA39-B-M/ ▲
Normal
LA39-C-M/ ▲
button

LA39-A-MT/ ▲
LA39-B-MT/ ▲
A B C Latching
LA39-C-MT/ ▲
LA39-A/B/C

button

Mushroom
button

Normal LA39-A-M/ ▲ -JW

button LA39-C-M/ ▲ -JW

A C Latching LA39-A-MT/ ▲ -JW

button LA39-C-MT/ ▲ -JW

Indicate the color at ▲

behind the slash

LA39-A-MD/ ▲
LA39-B-MD/ ▲
Normal
LA39-C-MD/ ▲
button

LA39-A-MTD/ ▲
LA39-B-MTD/ ▲
A B C Latching
LA39-C-MTD/ ▲
button

Illuminated
mushroom
button

Normal LA39-A-MD/ ▲ -JW

button LA39-C-MD/ ▲ -JW

LA39-A-MTD/ ▲ -JW
A C
Latching
button LA39-C-MTD/ ▲ -JW

Pushbutton/Indicator
LA39 / 34 LA39 Series Pushbutton/AD16 Series Indicator
◎ LA39 series pushbutton accessories

Name Type Order code Note

LA39-A-Z/ ▲
LA39-B-Z/ ▲
LA39-C-Z/ ▲

A B C

LA39-A/B/C
Emergency
stop button

LA39-A-Z/ ▲ -JW
LA39-C-Z/ ▲ -JW

A C

Indicate the color at ▲

behind the slash

LA39-A-ZY/ ▲
LA39-B-ZY/ ▲
LA39-C-ZY/ ▲

A B C

Key
emergency
stop button

LA39-A-ZY/ ▲ -JW
LA39-C-ZY/ ▲ -JW

A C

LA39 / 35
 LA39 E
Series Pushbutton
Product Features
● LA39-E series Φ16 pushbuttons, with ingenious design, beautiful appearance, exquisite volume, simple installation and
reliable contact, are the best choice for users to meet their requirements on miniaturization and intensive control of the
panel.
● The button head of illuminated pushbutton is bright in color, with soft and eye-catching lighting, and there are red, green,
yellow, blue and white colors for users to choose. This series of pushbuttons has a wide variety of shapes, and the head
shapes include three types: round, square and rectangular, which greatly meet the needs of users.
● This series of pushbuttons consists of two systems: the threaded sleeve component ，which constitutes the head operating
mechanism and the base component which constitutes the contact operating mechanism. All structural members are
connected by internationally advanced fastener-free momentary-in and latching connectors, which are safe, reliable and
convenient for assembly and disassembly. Moreover, the anti-rotation structure is adopted to ensure that the pushbutton is
installed and positioned correctly to prevent loosening.
● The base component has one normally open contact and one normally closed contact or two normally open and two
normally closed contacts, and is designed with a. It belongs to single-break momentary-action switch, which is the exact
guarantee of reliable contact and stable electrical performance.
● LA39-E series pushbuttons are of complete varieties and specifications, including normal buttons, illuminated buttons,
buttons with function symbols, selectors (selection buttons) with two positions or three positions, key switches with two
positions or three positions, mushroom buttons, emergency stop buttons, latching buttons, etc. Among them, normal
buttons, illuminated buttons and buttons with function symbols can be equipped with accessories F-I or F-II to prevent
pushbutton misoperation.
● According to the requirements of user's operation instructions, various forms of marks or signs (symbols, letters, characters,
etc.) can be configured.

Compliance with standards: IEC 60947-5-1 GB/T 14048.5

LA39-E
 LA39 E series PUSHBUTTON

◎ Scope of application

LA39-E series pushbuttons are equipped with complete functions, which can fully meet the needs of digital and program-
controlled devices and electronic and electrical controls at home and abroad, and are widely used as matching components for
control circuits, signals, interlocks, etc. in various fields such as machine tools, textiles, ships, aviation, automobiles, tobacco,
power, telecommunications, and medical devices with AC 50Hz(60Hz) and AC/DC 220V.

◎ Order code description

LA 39 — E — □ □ □ □ □ / □ □ □
No.
1 2 3 4 5 6 7 8 9 10
1 Pushbutton order code
2 Design S/N
3 Specification code Specification with installation hole of Φ 16 and C-type contact

4 Number of contacts 11: 1NO, 1NC 22: 2NO, 2NC

X: two-position
No marking: normal button D: illuminated button M: mushroom button
LA39-E

selector
5 Auxiliary order code XS: three-position selector Y: two-position key switch YS: three-position key switch T: latching button

Z: emergency stop button

6 Head shape No marking: round F: square J: rectangular

No marking: no symbol mark Sxyz: standard symbol mark

7 Marking code S99: with symbol mark (the content is as required by the customer)

Color code Red-r Green-g Yellow-y White-w Blue-b Black-k

8
Key switch Indicates pulling-out position of the key L: left C: center R: right

20: AC/DC 5V 21: AC/DC 6V 22: AC/DC 12V 23: AC/DC 24V 24: AC/DC 36V Type of light
9 Voltage code 25: AC/DC 48V 26: AC/DC 110V 27: AC/DC 127V 28: AC/DC 220V bead: LED

No marking: supply based on normal order code

10 Auxiliary code With marking: marked as required, the marked code is composed of 1-10 characters, for marking supply
information

◎ Technical feature
Working temperature -25℃ ~+55℃ Average temperature in 24h not over +35℃

Working humidity ≤90% RH, the relative humidity is not over 50% when the temperature exceeds 40℃

Contact resistance ≤100mΩ

Insulation resistance ≥100MΩ

Power frequency
AC 1500V 50Hz · 1min
withstand voltage
Mechanical 1 million times for normal button and illuminated button, 100,000 times for latching button and selector, 50,000
endurance times for key switch and emergency stop button

600,000 times for normal button and illuminated button, 100,000 times for latching button and selector, 50,000
Electrical endurance times for key switch and emergency stop button

Head protection class IP 40 Those marked with“TH”can work normally in a humid and tropical environment

Pushbutton/Indicator
LA39 / 38 LA39 Series Pushbutton/AD16 Series Indicator
◎ Product section view

◎ Rated contact capacity

Rated insulation voltage Ui 250V

LA39-E
Conventional thermal current Ith 5A

Usage category Rated working voltage Ue 24V 110V 220V

AC-15 2A 1A 0.5A
Rated working current Ie
DC-13 0.7A 0.2A 0.1A

◎ Contact type and wiring diagram

1NO 1NC Wiring diagram 2NO 2NC Wiring diagram

Light wiring Light wiring Light wiring Light wiring

terminal terminal terminal terminal

◎ Installation hole dimensions

Head of emergency Installation protective Installation protective

Round & square Rectangular head stop button and
head cover F - I head cover F - II head
mushroom button

LA39 / 39
 LA39 E series PUSHBUTTON

Φ16 LA39-E series pushbutton selection

Working Contact
Name Type Order code Color Light voltage Dimension
status
Round button 11 LA39-E11/ ▲
Momentary
22 LA39-E22/ ▲

11 LA39-E11T/ ▲
Latching
22 LA39-E22T/ ▲

Square button 11 LA39-E11F/ ▲

Red-r
Momentary
LA39-E22F/ ▲
Green-g
22 Round top
Yellow-y view

LA39-E11TF/ ▲
White-w
11
Blue-b
Latching Rectangular
LA39-E22TF/ ▲
Black-k top view
22

Rectangular button 11 LA39-E11J/ ▲ Square top

LA39-E

view
Momentary
22 LA39-E22J/ ▲

11 LA39-E11TJ/ ▲
Latching
22 LA39-E22TJ/ ▲

Illuminated round 11 LA39-E11D/ ▲★

button Momentary
22 LA39-E22D/ ▲★

11 LA39-E11TD/ ▲★
Latching
22 LA39-E22TD/ ▲★ LED light :

Illuminated square 11 LA39-E11DF/ ▲★ 20-AC/DC 5V

button Momentary Red-r 21-AC/DC 6V
22 LA39-E22DF/ ▲★ Green-g 22-AC/DC 12V Round top
view
Yellow-y 23-AC/DC 24V
11 LA39-E11TDF/ ▲★ White-w 24-AC/DC 36V
Latching Blue-b 25-AC/DC 48V Rectangular
LA39-E22TDF/ ▲★ 26-AC/DC 110V top view
22
27-AC/DC 127V
Illuminated 11 LA39-E11DJ/ ▲★ 28-AC/DC 220V Square top
rectangular button Momentary
view

22 LA39-E22DJ/ ▲★

11 LA39-E11TDJ/ ▲★
Latching
22 LA39-E22TDJ/ ▲★

Note ●
Indicate the color at ▲ behind the slash and indicate the voltage grade of an illuminated button at ★ .

Pushbutton/Indicator
LA39 / 40 LA39 Series Pushbutton/AD16 Series Indicator
Φ16 LA39-E series pushbutton selection
Handle
Name Type position Contact Order code Color Light voltage Dimension

Round selector 11 LA39-E11X/ ▲

Two-position 22 LA39-E22X/ ▲
held

22 LA39-E22XS/ ▲
Three-
position held

Square selector 11 LA39-E11XF/ ▲

Red-r

LA39-E22XF/ ▲
Green-g
Two-position 22 Round top
held Yellow-y view
White-w

LA39-E22XSF/ ▲
Blue-b
22 Rectangular
Black-k top view
Three-
position held

Rectangular 11 LA39-E11XJ/ ▲ Square top

LA39-E
selector view
Two-position 22 LA39-E22XJ/ ▲
held

22 LA39-E22XSJ/ ▲
Three-
position held

Illuminated round 11 LA39-E11XD/ ▲★

selector
Two-position 22 LA39-E22XD/ ▲★
held

22 LA39-E22XSD/ ▲★
Three- LED light :
position held

Illuminated square 11 LA39-E11XDF/ ▲★ 20-AC/DC 5V

selector Red-r 21-AC/DC 6V
Two-position 22 LA39-E22XDF/ ▲★ Green-g 22-AC/DC 12V Round top
held view
Yellow-y 23-AC/DC 24V
White-w 24-AC/DC 36V
22 LA39-E22XSDF/ ▲★ Blue-b 25-AC/DC 48V Rectangular
top view
Three- 26-AC/DC 110V
position held
27-AC/DC 127V
Illuminated 11 LA39-E11XDJ/ ▲★ 28-AC/DC 220V Square top
rectangular selector view

Two-position 22 LA39-E22XDJ/ ▲★
held

22 LA39-E22XSDJ/ ▲★
Three-
position held

Note ●
Indicate the color at ▲ behind the slash and indicate the voltage grade of an illuminated button at ★ .

LA39 / 41
 LA39 E series PUSHBUTTON

Φ16 LA39-E series pushbutton selection

Handle
Name Type position Contact Order code Note Dimension

Round key switch

11 LA39-E11Y/ □

Two-position
LA39-E22Y/ □
held
22

22 LA39-E22YS/ □
Three-
position held

Square key switch Two-position key switch, the

11 LA39-E11YF/ □ keys are in the two positions:
Left (L) and Right (R)

Round top
LA39-E

view
LA39-E22YF/ □
Two-position
held 22

22 LA39-E22YSF/ □ Square top

view
Three-
position held
Three-position key switch,
the keys are in the three
positions: Left (L), Center (C)
Rectangular key switch and Right (R)
11 LA39-E11YJ/ □
Rectangular
top view

LA39-E22YJ/ □
Two-position
held 22

22 LA39-E22YSJ/ □
Three-
position held

Indicate the position where the key can be pulled out at □ behind the slash: Left (L), Center (C) and Right (R).
Note

Pushbutton/Indicator
LA39 / 42 LA39 Series Pushbutton/AD16 Series Indicator
 Φ16 LA39-E series pushbutton selection

Working Contact
Name Type Order code Color Light voltage Dimension
status
Emergency stop button

11 LA39-E11Z/ ▲

Latching by
pressing,
resetting Red-r
by rotating
right

22 LA39-E22Z/ ▲

Mushroom button
11 LA39-E11M/ ▲

Momentary

LA39-E
Red-r
22 LA39-E22M/ ▲ Green-g
Yellow-y
White-w
11 LA39-E11MT/ ▲ Blue-b
Black-k
Latching

22 LA39-E22MT/ ▲

Illuminated mushroom
button 11 LA39-E11MD/ ▲★ LED light :

Momentary 20-AC/DC 5V

LA39-E22MD/ ▲★
Red-r 21-AC/DC 6V
22
Green-g 22-AC/DC 12V
Yellow-y 23-AC/DC 24V
White-w 24-AC/DC 36V
11 LA39-E11MTD/ ▲★ 25-AC/DC 48V
Blue-b
26-AC/DC 110V
Latching
27-AC/DC 127V
22 LA39-E22MTD/ ▲★ 28-AC/DC 220V

Indicate the color at ▲ behind the slash and indicate the voltage grade of an illuminated button at ★ .
Note

LA39 / 43
 LA39 E series PUSHBUTTON

Φ16 LA39-E series pushbutton accessories

Order
Name Type Note Function Dimension
code

F- Ⅰ
Used for round and
square heads

Protective To prevent
cover misoperation

F- Ⅱ
Used for rectangular
head
LA39-E

F- Ⅲ
Plugging the empty hole
of the panel (round head)

Plugging the empty hole

Panel plug F- Ⅳ of the panel (square Decoration
head)

Plugging the empty hole

F- Ⅴ of the panel (rectangular
head)

Pushbutton/Indicator
LA39 / 44 LA39 Series Pushbutton/AD16 Series Indicator
 Φ16 LA39-E series pushbutton accessories

Name Type Order code Note 作用 Dimension

Mount and
F- Ⅵ
Fastening dismantle
Handling tool
wrench button and
LED

Avoid being
Inserted tightly at the rear welded directly
F- Ⅶ of LA39-E Φ16 series
Connector
on the wiring
socket products terminal of the
button

LA39-E
F- Ⅷ The material is plastic

For tightening
Φ16
Fastening nut pushbutton
and indicator

F- Ⅸ The material is metal

“▲”indicates the color Light source in

LED F-D2/ ▲★ “★”indicates the the illuminated
voltage code button

●
The switch wiring shall avoid being welded as far as possible, and shall be connected by common international socket
(2.8x0.5mm) and covered with the protective sleeve.
●
If welding is necessary for wiring: A. manual welding at 25W, within 3 seconds; B. automatic welding at 240℃ , within
Note

3 seconds.
No external force shall be imposed within one minute after welding, and then cover the protective sleeve. Please do
not use solvent as flux to prevent the flux from penetrating into the product which will damage the product.
●
The pushbuttons shall be operated by hand, rather than other devices which are strictly forbidden!

LA39 / 45
 LA39 G
Series Pushbutton
Product Features
● LA39-G series pushbuttons are the latest products class, which greatly improves the exquisiteness of the
independently developed by our company with control panel.
independent intellectual property rights. This series of ● The contact module of LA39-G series pushbuttons is
products combines the advantages of similar products
designed as a double-break quick-acting structure with
and makes up for the shortcomings of other products.
the unique technical expertise of our company, which
Its greatest advantages are exquisite design, complete
greatly improves the contact reliability and electrical
specifications, convenient installation, beautiful
breaking ability. The contacts are gold-plated, so that they
appearance and reliable action.
can work reliably under the conditions of low voltage and
● LA39-G series pushbuttons are equipped with microcurrent. A module can provide a pair of independent
internationally-popular modular combination structure, normally open and normally closed contacts, and a
which is mainly composed of operating head and contact button can hold up to three contact modules (3 pairs
module. The head design features smooth lines, ultra- of normally open contacts +3 pairs of normally closed
thin size, various appearance styles and IP65 protection contacts).

Compliance with standards: IEC 60947-5-1 GB/T 14048.5

LA39-G
 LA39 G series PUSHBUTTON

◎ Order code description

LA 39 — G — □ □ □ □ □ / □ □ □ □
No.
1 2 3 4 5 6 7 8 9 10 11
1 Pushbutton order code
2 Design S/N
3 Specification code The installation hole is Φ16, and the contact type is Za type

4 Number of contacts 11: 1NO, 1NC 22: 2NO, 2NC 33: 3NO, 3NC
X: two-position
No marking: normal button D: illuminated button M: mushroom button
selector
5 Auxiliary order code XS: three-position selector Y: two-position key switch YS: three-position key switch T: latching button
Z: emergency stop button Q: piano-key switch
6 Head shape No marking: round F: square J: rectangular
No marking: no symbol mark Sxyz: standard symbol mark
7 Marking code S99: with symbol mark (the content is as required by the customer)
Color code Red-r Green-g Yellow-y White-w Blue-b Black-k
8
Key switch Indicates pulling-out position of the key L: left C: center R: right
9 Action function f (left spring return) fu (right spring return) ffu (left and right spring return)
Type of light
10 Voltage code 20: AC/DC 5V 21: AC/DC 6V 22: AC/DC 12V 23: AC/DC 24V 16: AC/DC 30V
bead: LED
No marking: supply based on normal order code
11 Auxiliary code With marking: marked as required, the marked code is composed of 1-10 characters, for marking supply
information

◎ Technical feature
LA39-G

Working temperature -25℃ ~+55℃ Average temperature in 24h not over +35℃

Working humidity ≤90% RH, the relative humidity is not over 50% when the temperature exceeds 40℃

Contact resistance ≤100mΩ

Power frequency
AC 1500V 50Hz · 1min
withstand voltage
Mechanical 1 million times for normal button and illuminated button, 100,000 times for latching button and selector, 50,000
endurance times for key switch and emergency stop button
600,000 times for normal button and illuminated button, 100,000 times for latching button and selector, 50,000
Electrical endurance times for key switch and emergency stop button

Head protection class IP 65 Those marked with“TH”can work normally in a humid and tropical environment

◎ Rated contact capacity

Rated insulation voltage Ui 250V

Conventional thermal current Ith 5A

Usage category Rated working voltage Ue 24V 110V 220V

AC-15 2A 1A 0.5A
Rated working current Ie
DC-13 0.7A 0.2A 0.1A

Pushbutton/Indicator
LA39 / 48 LA39 Series Pushbutton/AD16 Series Indicator
 ◎ Installation method

Installation sequence: pass the operating part through the panel hole, tighten the nut and fix it, and then press
the hasp of the switch base into a whole with the hasp pin position of the operating part. The switch base can be
disassembled by pressing the hasp of switch base inward.
Operation Hasp Installation
part pin hole Nut Hasp

Panel Switch base

◎ Contact type and wiring diagram

1NO 1NC Wiring diagram 2NO 2NC Wiring diagram 3NO 3NC Wiring diagram

LA39-G
◎ Installation hole dimensions

Head of emergency Installation protective Installation protective

Round & square Rectangular head stop button and
head cover F - I head cover F - II head
mushroom button

●
There are two wiring modes: welding and plug-in connection. In the case of plug-in connection, it is recommended to
use a general-purpose socket (2.8x0.5mm) for connection, with a protective sleeve.
●
If welding is necessary for wiring: a. manual welding at 25W, within 3 seconds; B. automatic welding at 240℃ , within
Note

3 seconds.
No external force shall be imposed within one minute after welding, and then cover the protective sleeve. Please
do not use solvent as flux to prevent the flux from penetrating into the product which will damage the product.
●
The buttons shall be operated by hand, rather than other devices which are strictly forbidden!

LA39 / 49
 LA39 G series PUSHBUTTON

Φ16 LA39-G series pushbutton selection

Working Contact
Name Type Order code Color Dimension
status
Round button 11 LA39-G11/ ▲

Momentary 22 LA39-G22/ ▲

33 LA39-G33/ ▲

11 LA39-G11T/ ▲

Latching 22 LA39-G22T/ ▲

33 LA39-G33T/ ▲

Square button 11 LA39-G11F/ ▲

Momentary 22 LA39-G22F/ ▲

33 LA39-G33F/ ▲

LA39-G11TF/ ▲
Round top
11 view

Latching 22 LA39-G22TF/ ▲ Rectangular

top view
Red-r
33 LA39-G33TF/ ▲ Green-g
Yellow-y Square top
LA39-G11J/ ▲
LA39-G

Rectangular button 11 White-w view

Blue-b
Momentary 22 LA39-G22J/ ▲

33 LA39-G33J/ ▲

11 LA39-G11TJ/ ▲

Latching 22 LA39-G22TJ/ ▲

33 LA39-G33TJ/ ▲

Piano-key switch 11 LA39-G11Q/ ▲

Momentary 22 LA39-G22Q/ ▲

33 LA39-G33Q/ ▲

11 LA39-G11TQ/ ▲

Latching 22 LA39-G22TQ/ ▲

33 LA39-G33TQ/ ▲

Note ●
Indicate the color at ▲ behind the slash.

Pushbutton/Indicator
LA39 / 50 LA39 Series Pushbutton/AD16 Series Indicator
Φ16 LA39-G series pushbutton selection
Working Contact Light
Name Type Order code Color Dimension
status voltage
Illuminated round 11 LA39-G11D/ ▲★
button
Momentary 22 LA39-G22D/ ▲★

33 LA39-G33D/ ▲★

11 LA39-G11TD/ ▲★

Latching 22 LA39-G22TD/ ▲★

33 LA39-G33TD/ ▲★

Illuminated 11 LA39-G11DF/ ▲★
square button
Momentary 22 LA39-G22DF/ ▲★

33 LA39-G33DF/ ▲★

LA39-G11TDF/ ▲★
Round top
11 view

Latching 22 LA39-G22TDF/ ▲★ LED light : Rectangular

top view
Red-r
33 LA39-G33TDF/ ▲★ Green-g 20-AC/DC 5V
Yellow-y 21-AC/DC 6V
Square top
LA39-G11DJ/ ▲★

LA39-G
Illuminated 11 White-w 22-AC/DC 12V view
rectangular Blue-b 23-AC/DC 24V
button
Momentary 22 LA39-G22DJ/ ▲★ 16-AC/DC 30V

33 LA39-G33DJ/ ▲★

11 LA39-G11TDJ/ ▲★

Latching 22 LA39-G22TDJ/ ▲★

33 LA39-G33TDJ/ ▲★

Illuminated 11 LA39-G11DQ/ ▲★
piano-key switch
Momentary 22 LA39-G22DQ/ ▲★

33 LA39-G33DQ/ ▲★

11 LA39-G11TDQ/ ▲★

Latching 22 LA39-G22TDQ/ ▲★

33 LA39-G33TDQ/ ▲★

Note ●
Indicate the color at ▲ behind the slash and indicate the voltage grade of an illuminated button at ★ .

LA39 / 51
 LA39 G series PUSHBUTTON

Φ16 LA39-G series pushbutton selection

Handle
Name Type Contact Order code Color Dimension
position
Round two-position
11 LA39-G11X/ ▲
selector Two-position
positioning

22 LA39-G22X/ ▲

33 LA39-G33X/ ▲

11 LA39-G11X/ ▲ fu
Two-position
right momentary

22 LA39-G22X/ ▲ fu

33 LA39-G33X/ ▲ fu

Square two-position
11 LA39-G11XF/ ▲
selector
Two-position
positioning

22 LA39-G22XF/ ▲
Round top
view
Red-r
33 LA39-G33XF/ ▲ Green-g
Yellow-y
LA39-G

11 LA39-G11XF/ ▲ fu Blue-b
Two-position Black-k
right momentary

22 LA39-G22XF/ ▲ fu
Square top
view

33 LA39-G33XF/ ▲ fu

Rectangular two-
11 LA39-G11XJ/ ▲
position selector Two-position
positioning

22 LA39-G22XJ/ ▲ Rectangular
top view

33 LA39-G33XJ/ ▲

11 LA39-G11XJ/ ▲ fu
Two-position
right momentary

22 LA39-G22XJ/ ▲ fu

33 LA39-G33XJ/ ▲ fu

Note ●
Indicate the color at ▲ behind the slash.

Pushbutton/Indicator
LA39 / 52 LA39 Series Pushbutton/AD16 Series Indicator
Φ16 LA39-G series pushbutton selection
Handle
Name Type Contact Order code Color Dimension
position
LA39-G22XS/ ▲
Three-position
Round three-position positioning 22
selector
33 LA39-G33XS/ ▲

LA39-G22XS/ ▲ f
Three-position
left momentary 22

33 LA39-G33XS/ ▲ f

LA39-G22XS/ ▲ fu
Three-position
right momentary 22

33 LA39-G33XS/ ▲ fu

LA39-G22XS/ ▲ ffu
Three-position left
& right momentary 22

33 LA39-G33XS/ ▲ ffu

LA39-G22XSF/ ▲
Three-position
Square three-position positioning 22
selector
33 LA39-G33XSF/ ▲

LA39-G22XSF/ ▲ f
Three-position
left momentary 22 Round top
view
Red-r
33 LA39-G33XSF/ ▲ f Green-g
Yellow-y
LA39-G22XSF/ ▲ fu

LA39-G
Three-position
right momentary 22 Blue-b
Black-k
33 LA39-G33XSF/ ▲ fu

LA39-G22XSF/ ▲ ffu
Three-position left Square top
& right momentary 22 view

33 LA39-G33XSF/ ▲ ffu

LA39-G22XSJ/ ▲
Rectangular three- Three-position
positioning 22
position selector
33 LA39-G33XSJ/ ▲
Rectangular
top view
Three-position
left momentary 22 LA39-G22XSJ/ ▲ f

33 LA39-G33XSJ/ ▲ f

LA39-G22XSJ/ ▲ fu
Three-position
right momentary 22

33 LA39-G33XSJ/ ▲ fu

LA39-G22XSJ/ ▲ ffu
Three-position left
& right momentary 22

33 LA39-G33XSJ/ ▲ ffu

Note ●
Indicate the color at ▲ behind the slash.

LA39 / 53
 LA39 G series PUSHBUTTON

Φ16 LA39-G series pushbutton selection

Name Type Handle position Contact Order code Dimension

11 LA39-G11Y/ □

Two- Two-
22 LA39-G22Y/ □
Round two- LA39-G33Y/ □
position position right
positioning momentary 33
position key
switch 11 LA39-G11Y/ □ fu
22 LA39-G22Y/ □ fu
33 LA39-G33Y/ □ fu

Three- Three-position 22 LA39-G22YS/ □

LA39-G33YS/ □
position left momentary
positioning 33
22 LA39-G22YS/ □ f
Round
three- 33 LA39-G33YS/ □ f
position key Three-position Three-position 22 LA39-G22YS/ □ fu
switch
LA39-G33YS/ □ fu
right momentary left & right
momentary 33
22 LA39-G22YS/ □ ffu
33 LA39-G33YS/ □ ffu
11 LA39-G11YF/ □
Two- Two- 22 LA39-G22YF/ □
LA39-G33YF/ □
position position right
Square two- positioning momentary 33
position key
switch 11 LA39-G11YF/ □ fu
22 LA39-G22YF/ □ fu Round top

LA39-G33YF/ □ fu
view
33
Three- Three- 22 LA39-G22YSF/ □
LA39-G33YSF/ □
position position left
33
LA39-G

positioning momentary

22 LA39-G22YSF/ □ f
Square
three- 33 LA39-G33YSF/ □ f
position key Three- Three-position 22 LA39-G22YSF/ □ fu
switch
LA39-G33YSF/ □ fu
position right left & right Square top
momentary momentary 33 view

22 LA39-G22YSF/ □ ffu
33 LA39-G33YSF/ □ ffu
11 LA39-G11YJ/ □
Two- Two- 22 LA39-G22YJ/ □
LA39-G33YJ/ □
position position right
Rectangular positioning momentary 33
two-position
key switch 11 LA39-G11YJ/ □ fu Rectangular
top view
22 LA39-G22YJ/ □ fu
33 LA39-G33YJ/ □ fu
Three- Three- 22 LA39-G22YSJ/ □
LA39-G33YSJ/ □
position position left
positioning momentary 33
22 LA39-G22YSJ/ □ f
Rectangular
three- 33 LA39-G33YSJ/ □ f
position key Three- Three-position 22 LA39-G22YSJ/ □ fu
switch
LA39-G33YSJ/ □ fu
position right left & right
momentary momentary 33
22 LA39-G22YSJ/ □ ffu
33 LA39-G33YSJ/ □ ffu

Note ●
Indicate the position where the key can be pulled out at □ behind the slash: Left (L), Center (C) and Right (R).

Pushbutton/Indicator
LA39 / 54 LA39 Series Pushbutton/AD16 Series Indicator
Φ16 LA39-G series pushbutton selection
Working Contact Light
Name Type Order code Color Dimension
status voltage
Emergency stop
button
11 LA39-G11Z/ ▲

Latching by
pressing,
resetting by 22 LA39-G22Z/ ▲ Red-r
rotating right
45℃

33 LA39-G33Z/ ▲

Mushroom button 11 LA39-G11M/ ▲

Momentary 22 LA39-G22M/ ▲

Red-r

LA39-G
33 LA39-G33M/ ▲ Green-g
Yellow-y
11 LA39-G11MT/ ▲ White-w
Blue-b

Latching 22 LA39-G22MT/ ▲

33 LA39-G33MT/ ▲

Illuminated 11 LA39-G11MD/ ▲★
mushroom button

Momentary 22 LA39-G22MD/ ▲★ LED light :

Red-r
LA39-G33MD/ ▲★
20-AC/DC 5V
33 Green-g
21-AC/DC 6V
Yellow-y
22-AC/DC 12V
11 LA39-G11MTD/ ▲★ White-w
23-AC/DC 24V
Blue-b
24-AC/DC 36V
Latching 22 LA39-G22MTD/ ▲★ 16-AC/DC 30V

33 LA39-G33MTD/ ▲★

Note ●
Indicate the color at ▲ behind the slash and indicate the voltage grade of an illuminated button at ★ .

LA39 / 55
 LA39 G series PUSHBUTTON

Φ16 LA39-G series pushbutton accessories

Order
Name Type Note Function Dimension
code

F- Ⅰ
Used for round and
square heads

Protective To prevent
cover misoperation

F- Ⅱ
Used for rectangular
head
LA39-G

F- Ⅲ
Plugging the empty hole
of the panel (round head)

Plugging the empty hole

Panel plug F- Ⅳ of the panel (square Decoration
head)

Plugging the empty hole

F- Ⅴ of the panel (rectangular
head)

Pushbutton/Indicator
LA39 / 56 LA39 Series Pushbutton/AD16 Series Indicator
Φ16 LA39-G series pushbutton accessories

Name Type Order code Note Function Dimension

F- Ⅷ The material is plastic

For
tightening
Fastening nut Φ16
pushbutton
and indicator

F- Ⅸ The material is metal

To prevent

LA39-G
Clamping ring F- Ⅹ button rom
rotating

For free
F- Ⅺ
Contact
combination
module of contacts

To fill the
position of
Simulator F- Ⅻ module with
contact not
installed

LA39 / 57
 LA39 F
Series Pushbutton
Product Features
● LA39-F series pushbuttons are equipped with complete specifications and
varieties. According to the head shape, it can be divided into round, square and
rectangular, and according to the variety, there are normal buttons, illuminated
buttons, etc.
● LA 39-F series pushbuttons feature beautiful appearance, clear and transparent
LED lighting and unique and reliable internal structure, which can better meet the
requirements of users on miniaturization and intensive control of the panel.

Compliance with standards: IEC 60947-5-1 GB/T 14048.5

LA39-F
 LA39 F series PUSHBUTTON

◎ Scope of application

LA39-F series pushbuttons can be used as supporting components for control signals, interlocks, etc. in various fields such
as program-controlled devices, electronic and electrical control circuits, machinery, telecommunications, medical devices and
instruments with AC 50Hz(60Hz) and AC/DC220V.

◎ Order code description

LA 39 — F — □ □ □ □ / □ □ □
No.
1 2 3 4 5 6 7 8 9
1 Pushbutton order code
2 Design S/N
3 Specification code The installation hole is Φ12, and the contact type is C type

4 Number of contacts 11: 1NO, 1NC 22: 2NO, 2NC

TD: illuminated
5 Auxiliary order code No marking: normal button D: illuminated button T: latching button
latching button
6 Head shape No marking: round F: square J: rectangular

7 Color code Red-r Green-g Yellow-y White-w Blue-b Black-k

21: DC 6V external resistance 240Ω 1/2W 22: DC 12V external resistance 680Ω 1W Type of light
8 Voltage code 23: DC 24V external resistance 1.3kΩ 1W bead: LED
No marking: supply based on normal order code
9 Auxiliary code With marking: marked as required, the marked code is composed of 1-10 characters, for marking supply
information

◎ Technical feature

Working temperature -25℃ ~+55℃ Average temperature in 24h not over +35℃

Working humidity ≤90% RH, the relative humidity is not over 50% when the temperature exceeds 40℃
LA39-F

Contact resistance ≤100mΩ

Insulation resistance ≥100MΩ

Power frequency
AC 1500V 50Hz · 1min
withstand voltage
Mechanical 200,000 times (1,200 times/hour) for normal button and illuminated button
endurance 100,000 times (1,200 times/hour) for latching button
200,000 times (1,200 times/hour) for normal button and illuminated button
Electrical endurance 100,000 times (1,200 times/hour) for latching button

Head protection class IP 40

●
LA39-F series pushbuttons are small in size. In order to ensure the brightness and service life of this series of
illuminated buttons, users need to connect the choked flow resistor in series (provided by our company) outside the
Note

products. Choked flow resistor parameters can be found in the voltage code column in the order code description
table on this page.

Pushbutton/Indicator
LA39 / 60 LA39 Series Pushbutton/AD16 Series Indicator
 ◎ Structural feature
●
The structural members are connected by advanced ●
The contacts are made of high-quality silver alloy, with
momentary-in and latching, which are safe, reliable and reliable on-off and long service life.
convenient for assembly and disassembly. ●
The button head of illuminated pushbutton is bright in color,
●
The contacts are converted by instantaneous mechanism, with soft and eye-catching lighting, and there are red, green,
with easy and fast operation and reliable contact. yellow, blue and white colors for users to choose.
●
High-quality metal and plastic materials at home and abroad ●
According to the requirements of user's operation
are selected, and advanced precision manufacturing and instructions, various forms of marks or signs (symbols,
processing technologies are adopted to ensure that the letters, characters, etc.) can be configured.
product accuracy and quality meet the design requirements.

◎ Rated contact capacity

Rated insulation voltage Ui 250V

Conventional thermal current Ith 5A

Usage category Rated working voltage Ue 24V 110V 220V

AC-15 2A 1A 0.5A
Rated working current Ie
DC-13 0.7A 0.2A 0.1A

◎ Contact type and wiring diagram

1NO 1NC Wiring diagram 2NO 2NC Wiring diagram

Light wiring Light wiring Light wiring Light wiring

terminal terminal terminal terminal

LA39-F
◎ Installation hole dimensions
Round & square head Rectangular head

●
Wiring: weld the terminal within 20W/5s or 260℃ /3s, and do not apply external force to the terminal. When welding,
the soldering iron shall not touch the shell. When wiring, stress shall be prevented from acting on the terminal, neither
bending or lifting the terminal nor applying external force to the terminal.
Note

●
For latching buttons, make sure that the button is in the release position before replacing the components. If the
button in the locked position is replaced, the internal mechanism may be damaged.
●
The buttons shall be operated by hand, rather than other devices which are strictly forbidden.

LA39 / 61
 LA39 F series PUSHBUTTON

Φ 12 LA39-F series pushbutton selection

Working Contact
Name Type Order code Color Dimension
status
Round button
11 LA39-F11/ ▲

Momentary

22 LA39-F22/ ▲

11 LA39-F11T/ ▲

Latching

22 LA39-F22T/ ▲

Square button
11 LA39-F11F/ ▲ Round top
view
Momentary
Red-r
22 LA39-F22F/ ▲ Green-g
Yellow-y
White-w
11 LA39-F11TF/ ▲ Blue-b Square top
Black-k view
Latching

22 LA39-F22TF/ ▲

Rectangular button
11 LA39-F11J/ ▲
Rectangular
Momentary top view

22 LA39-F22J/ ▲

11 LA39-F11TJ/ ▲
LA39-F

Latching

22 LA39-F22TJ/ ▲

●
Indicate the color at ▲ behind the slash.
●
LA39-F series pushbuttons are small in size. In order to ensure the brightness and service life of this series of
Note

illuminated buttons, users need to connect the choked flow resistor in series (provided by our company) outside the
products.

Pushbutton/Indicator
LA39 / 62 LA39 Series Pushbutton/AD16 Series Indicator
 Φ 12 LA39-F series pushbutton selection
Working Contact
Name Type Order code Color Light voltage Dimension
status
Illuminated round
button 11 LA39-F11D/ ▲★

Momentary

22 LA39-F22D/ ▲★

11 LA39-F11TD/ ▲★

Latching

22 LA39-F22TD/ ▲★

Illuminated square
button 11 LA39-F11DF/ ▲★

Momentary
Red-r
22 LA39-F22DF/ ▲★
Green-g 21-AC/DC 6V
Yellow-y 22-AC/DC 12V

LA39-F11TDF/ ▲★
White-w 23-AC/DC 24V
11
Blue-b
Latching

22 LA39-F22TDF/ ▲★

Illuminated rectangular
button 11 LA39-F11DJ/ ▲★

Momentary

22 LA39-F22DJ/ ▲★

11 LA39-F11TDJ/ ▲★

LA39-F
Latching

22 LA39-F22TDJ/ ▲★

●
Indicate the color at ▲ behind the slash and indicate the voltage grade of illuminated button at ★ .
LA39-F series pushbuttons are small in size. In order to ensure the brightness and service life of this series of
Note

illuminated buttons, users need to connect the choked flow resistor in series (provided by our company) outside the
products.

LA39 / 63
 AD16
Series Indicator and Buzzer
Product Features
● AD16 series indicators use high-bright pure LED luminous chip as light source, characterized by long service life, low
energy consumption, small size and lightweight, which are updating products of XD-type incandescent lamps and neon
lamp indicators. AD16-22, AD16-16A, B and AD16-12A indicators launched by our factory are characterized by high
brightness, good reliability, beautiful appearance and exquisite manufacturing, which are generally praised by users. In
order to meet the increasing quality and aesthetic requirements of users, we have also developed 22-series products
including AD16-22B, C, D, E, H, P (planar) and I-type (outdoor) bi-color lights, position indicators, flashing buzzers and
ultrashort indicators, and 16-series products including AD16-16C, CF, CJ and G-type (outdoor) indicators, as well as AD-
16M, MF and MJ-type buzzers. The appearance design consistent with the style of LA39 series pushbuttons is adopted.
Various international standard symbols or customized symbols can be engraved in the lampshade. The lampshade is
made of high-strength polycarbonate, which has good impact resistance and built-in screw wiring, making it safer and more
convenient. All improvements will make your selection and use more convenient and the design more perfect.
● AD16 series indicators can be used as indicating signals, warning signals, accident signals and other indicating signals in
the lines of power, telecommunications, machine tools, ships, textiles, printing, mining machinery and other equipment.

Compliance with standards: IEC 60947-5-1 GB/T 14048.5

AD16
 AD16 series INDICATOR AND BUZZER

◎ Order code description

AD16 — □ □ / □ □ □ □ □ □
No.
1 2 3 4 5 6 7 8 9
1 Indicator order codecode Indicator order code + design S/N

2 Basic specification code Indicates hole dimensions

3 Auxiliary specification code Different order codes of the same neck size are represented by A, B, C and D

4 Color code Red-r Green-g Yellow-y White-w Blue-b

5 Voltage code Represented by two digits (refer to the voltage grade code table for details)
The standard type is without any letter, ultra-short type (not applicable for DC220V and above) is
6 Product specification marked with“S”
B – continuous (B is only limited to buzzer or flashing buzzer, none – flashing intermittently)
None – normal H – high brightness k + voltage: anti-interference
7 Performance code D – unidirectional conduction V – sound and light separated
None – normal TH – damp-heat type Head protection class: IP65, IP40, IP54
8 Application environment Marking if customized: IP54, IP65
No marking: supply based on normal order code With marking: marked as required, the
9 Auxiliary code marked code is composed of 1-10 characters, for marking supply information

◎ Technical feature
Power frequency
AC 1890V 50Hz · 1min Use frequency AC50~60Hz
withstand voltage
Working -25℃ ~+55℃ Average temperature in 24h not
Insulation resistance ≥100MΩ
temperature over +35℃

±20%
Allowable voltage ≤90% RH, the relative humidity is not over 50%
Working humidity when the temperature exceeds 40℃
fluctuation of AC indicator
Continuous working Vibration Work normally under the vibration frequency of
≥30000 hours
endurance frequency 2-80Hz and acceleration of 0.7g

Light brightness ≥100cd/m2 Pollution grade Grade 3, installation class III

Relative discharge Application Those marked with“TH”can work normally in

CTI≥175
tracking index environment a humid and tropical environment

◎ Voltage grade code table

Voltage code Power supply Voltage (V) Current (mA) Optional anti-interference voltage (V)
21 6V K3
15(g.w)，25(b)，35(r.y)
22 12V K3 K6
23 24V K5 K10
24 36V K5 K10
25 48V 15 K5 K10 K20
AD16

26 110V K20 K40 K60

27 AC.DC 127V K20 K40 K60
28 220V K30 K60 K90 K120
33 270V K30 K60 K90 K120
29 380V 10 K30 K60 K90 K120
34 400V K30 K60 K90 K120
35 440V K30 K60 K90 K120
30 500V 8 K30 K60 K90 K120
31 220V K30 K60 K90 K120
40 230V 15 K30 K60 K90 K120
AC
41 240V K30 K60 K90 K120
32 380V 18 K30 K60 K90 K120

Pushbutton/Indicator
LA39 / 66 LA39 Series Pushbutton/AD16 Series Indicator
 Φ 22 AD16-22 series indicator selection

Name Type Order code Color Voltage code Dimension

Ф22 Type B

AD16-22B/ ▲★

Installation hole Ф22.5、Ф25

Ф22 Type C
21-AC/DC 6V
AD16-22C/ ▲★
22-AC/DC 12V
23-AC/DC 24V
24-AC/DC 36V

AD16-22C/ ▲★ S
25-AC/DC 48V
s: short shell 26-AC/DC 110V
Red-r 27-AC/DC 127V
Installation hole Ф22.5、Ф25
Green-g 28-AC/DC 220V
Yellow-y 33-AC/DC 270V
Ф22 Type D White-w 29-AC/DC 380V
Blue-b 34-AC/DC 400V
AD16-22D/ ▲★ 35-AC/DC 440V
30-AC/DC 500V
31-AC 220V

AD16-22D/ ▲★ S
40-AC 230V
41-AC 240V
s: short shell
32-AC 380V
Installation hole Ф22.5、Ф25

Ф22 Type E

AD16-22E/ ▲★

AD16-22E/ ▲★ S
s: short shell
AD16

Installation hole Ф22.5、Ф25

●
Short-shell indicator is applicable to places with narrow installation space. All short-shell indicators are applicable to
Φ22.5 and Φ25 openings, and in the case of Φ25 opening, it needs to be matched with a reducing ring.
●
The indicator of DC power supply can be applicable to AC power supply.
Note

●
Due to heat dissipation conditions, there is no AC/DC voltage of 220V or above for short-shell indicators. (If DC220V
and discharge lamp are needed, we will provide a slightly longer lamp shell, by removing the S in the order code)
●
Indicate the color at ▲ behind the slash following order code and indicate the voltage grade of illuminated button at ★ .

LA39 / 67
 AD16 series INDICATOR AND BUZZER

Φ 22 AD16-22 series indicator selection

Working
Name Type Order code Color Dimension
voltage
Ф22 Type F

AD16-22F/ ▲★

21-AC/DC 6V Installation hole Ф22.5、Ф25

22-AC/DC 12V
Ф22 Type I 23-AC/DC 24V
24-AC/DC 36V
AD16-22I/ ▲★ 25-AC/DC 48V
26-AC/DC 110V
27-AC/DC 127V
28-AC/DC 220V
33-AC/DC 270V

AD16-22I/ ▲★ -JW
29-AC/DC 380V
34-AC/DC 400V
Red-r
35-AC/DC 440V
Green-g
30-AC/DC 500V
Yellow-y
31-AC 220V
Outdoor indicator, with luminance 3 times of normal indicator and head White-w
protection class of IP65 by default. 40-AC 230V Installation hole Ф22.5、Ф25
Blue-b
41-AC 240V
Ф22 Type H 32-AC 380V
AD16-22H/ ▲★

AD16-22H/ ▲★ S
s: short shell

Installation hole Ф22.5、Ф25

Ф22 Type P

AD16-22P/ ▲★
DC 220V
AC 380V
AD16

Installation hole Ф22.5、Ф25

●
Short-shell indicator is applicable to places with narrow installation space. All short-shell indicators are applicable to
Φ22.5 and Φ25 openings, and in the case of Φ25 opening, it needs to be matched with a reducing ring.
●
The indicator of DC power supply can be applicable to AC power supply.
Note

●
Due to heat dissipation conditions, there is no AC/DC voltage of 220V or above for short-shell indicators. (If DC220V
and discharge lamp are needed, we will provide a slightly longer lamp shell, by removing the S in the order code)
●
Indicate the color at ▲ behind the slash following order code and indicate the voltage grade of illuminated button at ★ .

Pushbutton/Indicator
LA39 / 68 LA39 Series Pushbutton/AD16 Series Indicator
 Φ 22 Φ 30 AD16 series buzzer/flashlight selection
Working
Name Type Order code Color Dimension Note
voltage
Buzzer

Buzzer sounds
AD16-22M/K ★
intermittently or
Black-k
continuously, with a
volume of 10cm/80db

Flashing buzzer Buzzer sounds

intermittently or flashes,
with a volume of
AD16-22SM/ ▲★ 10cm/80db. Continuous
sounding/constant lighting
Red-r can be customized.
21-AC/DC 6V
Green-g S short-shell flashing
22-AC/DC 12V buzzer can realize the
AD16-22SM/ ▲★ S
Yellow-y Flashing buzzer type S
23-AC/DC 24V following voltages:
s: short shell 24-AC/DC 36V 21-AC/DC 6V
22-AC/DC 12V
25-AC/DC 48V 23-AC/DC 24V
Installation hole Ф22.5、Ф25
26-AC/DC 110V 24-AC/DC 36V
27-AC/DC 127V
Flashlight
28-AC/DC 220V
31-AC 220V
Red-r
40-AC 230V
Green-g
41-AC 240V
AD16-22S/ ▲★ Yellow-y
32-AC 380V
White-w
Blue-b

Installation hole Ф22.5、Ф25

Φ 30 buzzer
1. Sound volume is
10cm/100db.
2. The buzzer can
AD16-30MW/w
sound continuously or
Alarm intermittently (by default).
whistle-W/ If continuous sounding is
White-w needed, add C behind the
AD16-30M/w ★
voltage code.
3. The alarm whistle is
only applicable to voltages
Installation hole Ф30.5
AD16

of 110V and below.

●
Short-shell flashing buzzer is applicable to places with narrow installation space.
Short-shell flashing buzzers are applicable to Φ22.5 and Φ25 openings, and in the case of Φ25 opening, it needs
Note

to be matched with a reducing ring.

●
Indicate the color at ▲ behind the slash following order code and indicate the voltage grade at .

LA39 / 69
 AD16 series INDICATOR AND BUZZER

Selection of Φ 22 AD16-22 series indicator for special purpose

Working Internal wiring
Name Type Order code Color Dimension Note
voltage diagram
Round bi-color AC & DC type
light 22-AC/DC 12V
23-AC/DC 24V
Warning:
AD16-22D/ ▲★ 24-AC/DC 36V
1. When using
AC type
25-AC/DC 48V AC indicator,
26-AC/DC 110V the wiring must
not be wrong,
27-AC/DC 127V Installation hole
Ф22.5、Ф25 otherwise the
Red-r 28-AC/DC 220V indicator will be
Green-g 33-AC/DC 270V damaged.
Square bi-color AC & DC type 2. The lamp is
light 34-AC/DC 400V
red and green.
29-AC/DC 380V If other colors
31-AC 220V are needed,
AD16-22BF/ ▲★ 40-AC 230V
please specify
AC type separately.
41-AC 240V
32-AC 380V
Installation hole
Ф22.5、Ф25

21-AC/DC 6V
Anti-interference
indicator 22-AC/DC 12V
23-AC/DC 24V 1. There is no
24-AC/DC 36V AC/DC voltage
Threshold circuit of 220V and
25-AC/DC 48V above for short-
26-AC/DC 110V shell indicators
27-AC/DC 127V of type B and
other types.
28-AC/DC 220V
AD16-22 ■ /
2. It is
▲★ -K
29-AC/DC 380V suggested that
33-AC/DC 270V the threshold
value shall not
34-AC/DC 400V be too high. If
35-AC/DC 440V Threshold circuit
the interference
29-AC/DC 380V voltage is too
Installation hole high, please
31-AC 220V
Red-r Ф22.5、Ф25 check the
40-AC 230V wiring.
Green-g 41-AC 240V
Yellow-y 32-AC 380V
White-w
Test type indicator Blue-b 23-AC/DC 24V
24-AC/DC 36V
25-AC/DC 48V
26-AC/DC 110V
Do not be in the
AD16

AD16-22DY/ ▲★
27-AC/DC 127V
test state for a
28-AC/DC 220V long time.
31-AC 220V
40-AC 230V Installation hole
41-AC 240V Ф22.5、Ф25

32-AC 380V

●
Indicate Type B, C, D etc. at ■ before the slash following order code, indicate the color at ▲ behind the slash and
indicate the voltage grade of illuminated button at ★ . Wiring error is not allowed for AC bi-color light (such as X1, X2
Note

connection).

Pushbutton/Indicator
LA39 / 70 LA39 Series Pushbutton/AD16 Series Indicator
 Φ 22 AD16-22 series position indicator selection
Working
Name Type Order code Color Dimension Note
voltage
Isolation
disconnector
position indicator AD16-22W/ G ★
Round
X0X1 powered
on
glow green

X0X2 powered
on glow
red
AD16-22WF/ G ★
Square

Illuminating
Circuit breaker
form
position indicator Order code
X0-X1 X0-X2 X1-X2

AD16-22W/ D ★ AD16-22W/ D
Round 23-AC/DC 24V
24-AC/DC 36V
X0X1 powered AD16-22W/ D-S1
on 25-AC/DC 48V
Round
glow red 26-AC/DC 110V
AD16-22W/ D-S2
27-AC/DC 127V
28-AC/DC 220V
AD16-22W/ D-S3
X0X2 powered 31-AC 220V
on glow 40-AC 230V
red AD16-22W/ D-S4
41-AC 240V
AD16-22WF/ D ★ 32-AC 380V
AD16-22W/ D-S5
Square

AD16-22W/ D-S6

AD16-22W/ D-S7

Square
Earthing position
indicator
AD16-22W/ N ★
Round

X1X2 powered
on
AD16

glow red

AD16-22WF/ N ★
Square

Installation hole
Ф22.5、Ф25

Wiring error is not allowed for isolation disconnector and circuit breaker position indicators (such as X1, X2
Note

connection). Indicate the voltage grade at ★ behind the slash.

LA39 / 71
 AD16 series INDICATOR AND BUZZER

Φ 16 AD16-16 series indicator selection

Working
Name Type Order code Color Dimension
voltage

4（Max board
thickness）
AD16-16A/ ▲★ 20-AC/DC 5V
21-AC/DC 6V
22-AC/DC 12V
23-AC/DC 24V Wiring terminal
2.8×0.8
24-AC/DC 36V
25-AC/DC 48V
Plug-in wiring indicator 18-AC/DC 75V
26-AC/DC 110V
28-AC/DC 220V
31-AC 220V
AD16-16B/ ▲★ 32-AC 380V

Installation hole Ф16.3

Round indicator

Mounting plate
thickness 1-6
Red-r
Green-g
AD16-16C/ ▲★ Yellow-y
White-w
Wiring terminal
Blue-b 2.8×0.5

Round head
21-AC/DC 6V
Square indicator 22-AC/DC 12V
23-AC/DC 24V
16-AC/DC 30V
24-AC/DC 36V
AD16-16CF/ ▲★ 25-AC/DC 48V Round top view

17-AC/DC 63V
18-AC/DC 75V
26-AC/DC 110V
28-AC/DC 220V Square top view
33-AC/DC 270V
Rectangular indicator
AD16

Rectangular top view

AD16-16CJ/ ▲★

Installation hole Ф16.3

Note ●
Indicate the color at ▲ behind the slash and indicate the voltage grade of an illuminated button at ★ .

Pushbutton/Indicator
LA39 / 72 LA39 Series Pushbutton/AD16 Series Indicator
Φ 16 AD16-16 series indicator selection

Name Type Order code Color Working voltage Dimension

Plug-in wiring indicator

AD16-16D/ ▲★

21-AC/DC 6V
22-AC/DC 12V
23-AC/DC 24V
16-AC/DC 30V
24-AC/DC 36V
Installation hole Ф16.3
25-AC/DC 48V
26-AC/DC 110V
Screw-type wiring indicator
27-AC/DC 127V
28-AC/DC 220V
31-AC 220V
32-AC 380V
41-AC 240V
Red-r
Green-g
AD16-16DL/ ▲★ Yellow-y
White-w
Blue-b

Installation hole Ф16.3

Plug-in wiring indicator

(spherical head)

21-AC/DC 6V
22-AC/DC 12V
23-AC/DC 24V
24-AC/DC 36V
4（Max board thickness）

AD16

AD16-16G/ ▲★
25-AC/DC 48V
26-AC/DC 110V
27-AC/DC 127V
28-AC/DC 220V
31-AC 220V
32-AC 380V

Installation hole Ф16.3

Note ●
Indicate the color at ▲ behind the slash and indicate the voltage grade of an illuminated button at ★ .

LA39 / 73
 AD16 series INDICATOR AND BUZZER

Φ 16 AD16-16 series buzzer selection

Rated sound
Sounding Working
Name Type Order code pressure & Dimension
way & color voltage frequency
Round buzzer

AD16-16M/ ★

Mounting plate
thickness 1-6
Square buzzer

Wiring terminal
2.8×0.5
Round top view
21-AC/DC 6V
Default 22-AC/DC 12V 75dB（at 10cm）
★
(intermittent) Under rated
AD16-16MF/ 23-AC/DC 24V
B constant pressure
buzzing 24-AC/DC 36V 2300Hz±400Hz
25-AC/DC 48V Square top view

Rectangular top view

Rectangular buzzer
AD16

AD16-16MJ/ ★

Installation hole Ф16.3

Note ●
Indicate the sounding way at behind the slash following order code and indicate the voltage grade at ★ .

Pushbutton/Indicator
LA39 / 74 LA39 Series Pushbutton/AD16 Series Indicator
 Φ 16 AD16-16 series indicator buzzer selection
Rated sound
Sounding way Working
Name Type Order code pressure & Dimension
& color voltage frequency
Plug-in wiring flashing

Mounting plate
buzzer

thickness 1-6
Round head

▲★

Wiring terminal
AD16-16SM/

2.8×0.5
Round top view

Default
(intermittent,
flashing); 22-AC/DC 12V
Installation hole Ф16.3
B (continuous, 23-AC/DC 24V 80dB
constant 24-AC/DC 36V （at 10cm）
Screw-type wiring
flashing buzzer lighting 25-AC/DC 48V
Red-r
Yellow-y

AD16-16SML/ ▲★

Installation hole Ф16.3

Φ 12 AD16-12 series indicator selection

Working
Name Type Order code Color Dimension
voltage
Round indicator
21-AC/DC 6V
Red-r 22-AC/DC 12V
Green-g 23-AC/DC 24V
AD16-12A/ ▲★ Yellow-y 24-AC/DC 36V
White-w 25-AC/DC 48V
Blue-b 26-AC/DC110
28-AC/DC220
Installation hole Ф12.3 AD16

Wiring modes: welding and plug-in connection

●
The wiring shall avoid being welded as far as possible, and shall be connected by international general-purpose
socket (2.8x0.5mm) and covered with the protective sleeve.
●
When welding is used: weld the wiring terminal within 20W/5s or 260℃ /3s, and do not apply external force to the
Note

terminal. When welding, the soldering iron shall not touch the shell. When connecting, stress shall be prevented from
acting on the terminal, neither bending or lifting the terminal nor applying external force to the terminal. (Welding
method is not recommended)
●
Indicate the sounding way at behind the slash following order code, indicate the color at ▲ and indicate the voltage
grade at .

LA39 / 75
 LA39/AD16LA39-A/B/C/E/G/F AD16 series
LETTERING SYMBOLS
ON HEAD OF PUSHBUTTON/INDICATOR

◎ Pushbutton and indicator lettering symbols

Chinese symbol

分闸 合闸 启动 停止 打开 关闭 上升

S1 S2 S3 S4 S5 S6 S7

下降 投入 切除 事故 故障 实验 电源

S8 S9 S10 S11 S12 S13 S14

开 关 备用

S15 S16 S17

Standard symbol

UP DOWN STOP START NO OFF OPEN

S18 S19 S20 S21 S22 S23 S24

CLOSE RESET MANUAL AUTO O Ⅰ Ⅱ

S25 S26 S27 S28 S29 S30 S31

Ⅲ
Lettering Symbols

S32

Pushbutton/Indicator
LA39 / 76 LA39 Series Pushbutton/AD16 Series Indicator
◎ Pushbutton and indicator lettering symbols

ISO symbol

S33 straight line S34 rotate S35 start S36 stop S37 start · stop S38 inching

S39 pump S40 cooling S41 lubricant S42 hydraulic S43 Auto or auto S44 limited linear
pump pump pump circulation movement

◎ Knob signage or signage frame lettering

Stop Start Switch off Switch on Auto Manual Close Open

停止 起动 分闸 合闸 自动 手动 关闭 打开

SX1 SX2 SX3 SX4

OFF ON Inspect Reset

Ⅰ ○ ○ Ⅰ
关 开 检验 复位
SX7 SX8
SX5 SX6

Ⅰ ○ Ⅱ Ⅱ ○ Ⅰ 1 0 2 2 0 1

SX9 SX10 SX11 SX12

OFF-NO STOP-START HAND-AUTO REV-FOR

Lettering Symbols

SX13 SX14 SX15 SX16

LA39 / 77