CONTROL SWITCH

CAM-OPERATED SWITCH

B TYPE, BH TYPE

INDEX FOR B / BH TYPE CAM-OPERATED SWITCH

Item Page Item Page Item Page

Features Handle code Voltmeter / Ammeter Switches to

Contact Arrangement
Specifications / Breaking Capacity Standard Specifications to of Standard Switches to
How to Order Special Specifications to Accessories to

Notch code to Mounting Hole Dimensions Nameplates to

Contact code Contact Arrangement Diagram to Technical Information to

FEATURES

Heavy-duty mechanical durability against Campability both compact body and high
high-frequent switching breaking capacity and yet greatly improved
Since the optimal layout of components and by using breaking capacity
materials with high wear resistance for the mechanical Larger breaking capacity of the switches generally requires that
section, it can be provides accurate operation feeling and the main body enlargment. However, Fuji's control switches has
durability against high-frequent switching up to 5 million achieved downsizing while increasing the breaking capacity.
times. This breakthrough has been made possible by optimally
designing the cam shapes
and the angle of the movable
contact parts for obtaining
max. switching speed
mechanically.
This allows you to
determine the setting
values (voltage and
current) with allowance.
The terminal arrangement greatly improves High-performance engineering plastics
wiring efficiency ensure high quality and high reliability
No up-screw terminal is adopted. It can be quickly wired For the body, polycarbonate resin is used, which has a
from the back for the alternate terminal arrangement. high level of performance among engineering plastics.
The material greatly improves strength and resistance
against environment (temperature, humidity, vibrations,
etc.), which are particularly important for the applications
related to heavy electric machineries. The contacts and
mechanical parts are transparent to facilitate checking
the contacting part.

A1
 SWITCH
Rolling action of contact mechanism

A SWITCH
improves contact stability Breaking starts Rolling action
In the contact mechanism, the movable contact makes
contact with the stationary contact at one point and then
gradually increases the contact area while rolling on it.
This rolling action minimizes the part exposed to the arc
that is generated at the first contact or breaking, thereby
maintaining much higher contact stability than the former Contact starts Rolling action Contact completes
product.

SPECIFICATIONS (RATINGS, PERFORMANCE)

PILOT LAMP &

Type B TYPE BH TYPE

INDICATOR
Specification

Rated insulation voltage (Ui)

Rated current-carrying capacity (lth)

Max. wire size

B
Screw size M4×9

Withstand voltage 2,500V AC / 1 min.

Lightning impulse ±7kV (1.2 / 50µs)

Contact resistance 50m or less

Mechanical life 5,000,000 operations or more, Class 1

CONNECTING
Electrical life 500,000 operations or more, Class 1

Shock resistance / or more (6 directions)

DEVICES
Vibration resistance Range of vibration : 10 to 150Hz, Acceleration : 20m/ , Time : 1 hour (3 directions)

Min. power requirements 5V AC 500mA, 5V DC 100mA (operating environment must be good)

Operating temperature –20 to 60°C

C
Storing temperature –40 to 70°C

Altitude 2,000 m or less

Breaking capacity [electrical life of 500,000 operations (class 1)]

AC DC
ELECTRONIC

Rated voltage Rated operating current Rated operating current Rated voltage Rated operating current Rated operating current 2 contacts used 2 contacts used
DEVICES

in series in series
(V) (resistance load) (A) (inductive load) (A) (V) (resistance load) (A) (inductive load) (A) Rated operating current Rated operating current
(resistance load) (A) (inductive load) (A)
D

› Inductive load: For AC: Power factor 0.6 to 0.7 (Class: AC11)
For DC: Time constant 40±6 ms (Class: DC12)
CENTER PARTS
CONTROL

A2
E
CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
HOW TO ORDER
Type (There’s contact arrangement at diagram)

BH-T2002-LD-B54-000
Type (There’s no contact arrangement at diagram)

BH-T2-2B2A-LD-B54-000

No. Item Code Detail Note

B Screw side is up / down
Basic type There are exceptions.
BH Screw side is right / left
Contact arrangement Please see page A31 for contact arrangement diagram.
Notch code Please see page A4 to 5 for mechanical operation method.
No. of units No. of units Max. unit No. varies from notch and type of switches.
1 unit has 2 contacts. (There is only 1 contact in 1
No. of contacts No. of contacts
unit in some cases.)
About representation of contact code, please refer to
Contact code Please see page A5 for Contact code.
the following picture.
Handle code Please see page A6 for Handle code.
Munsell color code
Color of Handle Flange
handle / flange B N1.5 N1.5
BG 7.5BG3/3.5 7.5BG4/1.5
Please select a nameplate No., when the nameplate
Nameplate Please see page A51 to 54 for Nameplate.
No. is not specified, plain nameplate is attached.
› For the type that corresponding to the all kinds of standard, please contact us separately.

About No. of contacts / Contact code

B type … Screw side is up / down
Contact code shows contact ON(close) notch position(s),
And terminal 1-2, 3-4, … from the left of codes.

BH type … Screw side is right / left

A3
 SWITCH
Notch code

A SWITCH
notches notches notches notches notches notches notches notches notches
Manual return

PILOT LAMP &

INDICATOR
B
notches notches notches notches notches notches notches notches notches
Automatic Combination of manual
Manual return return and automatic return

CONNECTING
DEVICES
C
notches notches notches notches notches notches notches notches notches
Combination of
manual and
automatic return
Manual return

ELECTRONIC
DEVICES

notches notches notches notches notches notches

D

Manual
return Automatic return
CENTER PARTS
CONTROL

A4
E
 CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE

Automatic rotating return

Automatic axial return

Automatic rotating return Manual axial return

Manual axial
Manual axial return return Automatic axial return Manual axial Automatic
return axial return

notches notches notches notches notches notches notches notches

Automatic
Manual return return Manual return
(Note) In the above table, the mark indicates the ordinary stop position of the switch and the mark shows that
the switch moves in this direction and then automatically stops in the arrowhead position.
means that the switch is manually moved from to .

Code Graphic symbol Designation Description Code Graphic symbol Designation Description

Contacts close between

B, A, T···V Continuous
Normal left and center.
closing
contact Closed in each notch position. contact Contacts close between
right and center.

U (push) / Contacts open after pulling Dual Closed in the B notch position.
L (pull)- contacts
contact Contacts close after pulling (Gold plating) Closed in the A notch position.

Contact closes after turning to the left Just before one contact
Over-
Close keep and keep closed till turning to the right. lapping
closes (ON) the other
contact Contact closes after turning to the right contact opens during
contact
and keep closed till turning to the left. operation.

A5
 SWITCH
Handle code

A SWITCH
Code
Rose shape (large) Rose shape (large) Rose shape (small) Rose shape (small) Octagonal shape (large)
with one point with one point with one point

Shape

Code

PILOT LAMP &

Octagonal shape (large) Octagonal shape Octagonal shape (small) Stick shape (large) Stick shape (small)
(small) with one point

INDICATOR
Shape

B
Code ›

Pistol shape (large) Pistol shape (small) Knob shape Egg shape (large) Egg shape (small)

Shape

CONNECTING
DEVICES
Code
Beak shape (large) Beak shape (small)

C
Shape

› The shaft for the LS handle is 13 mm shorter than the standard shaft.
Therefore, other types of handles cannot be replaced with the LS handle (knob shape).

Handle code (For dual body type / pulling lock and pushing lock type) ELECTRONIC

Code
Rose shape (large) Octagonal shape (large) Stick shape (large) Rose shape (small) Octagonal shape (small)
DEVICES

Shape
D

Code
Stick shape (small) Pistol shape (small)
CENTER PARTS

Shape
CONTROL

A6
E
CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
STANDARD SPECIFICATION SWITCHES

OUTLINES
Manual return and automatic return type
B-S,B,A, › The BY type has the same dimensions and shape. (Unit color: Blue)

B type

Mounting hole

No. of units

› Max unit No. of the Automatic return type is 6 (12 contacts).

Manual return and automatic return type

BH-S,B,A, › The BHY type has the same dimensions and shape. (Unit color: Blue)

BH type

Mounting hole

No. of units

› Max unit No. of the Automatic return type is 6 (12 contacts).

Combination of manual and automatic return type

B-TR,TL,FR,FL,FS
B type

Mounting hole

No. of units

A7
 SWITCH

A SWITCH
Automatic return type by pulling
B-SB
B type

Stroke:

Mounting hole

PILOT LAMP &

INDICATOR
No. of units

Automatic return type by pulling

BHX-SB

B
BH type

Mounting hole

CONNECTING
No. of units

DEVICES
Stroke:

Automatic or manual return type in axial direction

B-SQ,SR,SY

C
B type

Stroke:

Mounting hole
ELECTRONIC

No. of units
DEVICES

Automatic return type by pulling and pushing

BHW-SQ,SR,BHX-SY
D

BH type

Mounting hole
CENTER PARTS

Stroke:
CONTROL

No. of units

A8
E
CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
OUTLINES
Pulling lock and pushing lock type
B-SN,SM › The handle returns to orepating position after pushing the lock release button.

B type

Stroke:

Mounting hole

Handle BP No. of units

(Press-pull unit plus switching unit)

› The shaft shape is different from the basic one.

Please select a handle shape from page A6. (for pulling lock
and pushing lock type)

Manual / Automatic axial return type

B-SUB ,SUY › A phrase in brackets insert to the blank.

B type

Mounting hole
Stroke:

No. of units

Manual / Automatic axial return type

BHX-SUB ,SUY › A phrase in brackets insert to the blank.

BH type

Mounting hole
Pulling stroke:

No. of units

A9
 SWITCH

A SWITCH
Removable handle type
B-HC,TC,FC,SC
B type

PILOT LAMP &

INDICATOR
Mounting hole

No. of units

B
› Max. unit No. of the automatic return type is 6 (12 contacts).

Removable handle type

BHK-HC,TC,FC,SC
BH type

CONNECTING
DEVICES
Mounting hole
Mounting panel:

C
No. of units

Handle removal position ELECTRONIC

DEVICES

Key coding system (optional extra)

D

Cross-section view
›

Concave of
key shaft ›
Convex of
›

spring pin Spring pin

CENTER PARTS

›
Nameplate
Spring pin Handle
Flange
CONTROL

When the keyshaft and body are muching, it’s pasible to remove and insert of the key.
›1, 2 Diagram from right figure shape.

A10
E
CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
OUTLINES
Dual body type
B-HW,TW,FW,EW
B type

Mounting panel: t = to

Mounting hole

Dual body type

BH-HW,TW,FW,EW
BH type TOP Mounting panel: t = to

Shaft: Handle: BD

Mounting hole

No. of stages

∗ Please select a handle shape from page A6. (for dual body type)

A11
 SWITCH
SPECIAL SPECIFICATION SWITCH CODING FOR ORDERING

A SWITCH
1 Key handle type
A key is used as the handle.
Available notch : S, H, T, F, E Max. unit No. is 4.
C-88 and C-110 that made by Takigen is used. No. K6510 of C-88 is a standard key.
Please see page A14 for information of key system.
1) C-88 keyNot available for master key system)

B-KMC-H2-2B2A-B NUKI B C-88 K6510

Notch code Color of Key lock position Key No.
No. of units handle / flange Key type Standard
Code Switch
B type No. of contacts Contact code Not available for ∗ Specified No.

PILOT LAMP &

master key system
BH type

INDICATOR
2) C-110 keyAvailable for master key system)

B-KMC-H2-2B2A-B NUKI B C-110 AAA111 FUJI13

Notch code ∗Master key No. Key No. (change key)
Color of lock position
No. of units handle / flange Key type ∗ Specified No. ∗ Specified No.
Code Switch

B
No. of contacts Contact code Available for
B type master key system ∗Available character for master key No. / key No. (change key)
BH type Master key No. Within 6 (7 for number only)
Key No. Within 7
Number (0 - 9), Alphabet (A - Z)
∗Blank is not available.

OUTLINES

CONNECTING
DEVICES
B-KMC
B type ∗ The screw side is on the right/left in this type. In case of B type, it's generally on the up/down.
Mounting panel: t = to

C
Key

Key lock position

ELECTRONIC
NUKI NUKI NUKI NUKI NUKI NUKI NUKI NUKI
NUKI

Mounting hole NUKI NUKI NUKI NUKI NUKI

DEVICES

BHO The key is used to directly operate the switch.

For the key, pleas see the specifications of the key.
If the another key lock position is needed,
BH type ∗ The mounting hole is on the vertical in this type. In case of BH type, it's generally on the horizontal. please contact us.
∗ NUKI means key lock position.
D

Mounting panel: t = to

No. of units

Key
CENTER PARTS
CONTROL

The standard key is C-88 (Takigen). If the

master key is needed, please request us. Mounting hole
C-110 (Takigen) key is provided as a
master key.

A12
E
 CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
SPECIAL SPECIFICATION SWITCH CODING FOR ORDERING

2 Cylinder key type

Locked with an insert key. To open / close the switch, unlock the key and then operate the handle.
Available notch : S, H,
T, F, E, K, W, and SB.
Max. unit No. is 10.
1) C-88 key Not available for master key system) C-88 and C-110 that
made by Takigen is
B-KM-H2-2B2A-LD-B NUKI B C-88 K6510 used. No. K6510 of
C-88 is a standard key.
Notch code Key No.
No. of units Handle code Key lock position Please see page A14
Standard
Contact code Key type for information of key
Switch Key position Not available for ∗ Specified No.
No. of contacts master key system system.
B type Right Color of
BH type Bottom handle / flange

2) C-110 key Not available for master key system)

B-KM-H2-2B2A-LD-B NUKI B C-110 AAA111 FUJI13

Notch code Key lock position ∗Master key No. Key No. (change key)
No. of units Handle code
Key type ∗ Specified No. ∗ Specified No.
Contact code
Switch Key position Not available for
master key system
B type Right Color of
No. of contacts handle / flange ∗Available character for master key No. / key No. (change key)
BH type Bottom
Max. number Master key No. Within 6 (7 for number only)
of character Key No. Within 7
Available
character ∗

OUTLINES

B-KM
B type

Key lock position

NUKI NUKI NUKI NUKI NUKI

Key NUKI NUKI NUKI NUKI

NUKI NUKI NUKI NUKI NUKI

Mounting hole
Key lock position
BHC
Mounting panel: t = 1 to 3.2
Normaly, the key removal position is upside.
BH type

No. of units

Key

The standard key is C-88 (Takigen). If the

master key is needed, please request us.
C-110 (Takigen) key is provided as a Mounting hole
master key.

A13
 SWITCH
KEY SYSTEM

A SWITCH
C-88 type

× pcs × pcs × pcs × pcs × pcs

same number K6510
10 type 1 type

key only

PILOT LAMP &

different K6511
number key to

INDICATOR
Special character keys also available. Please see "Available character for key No."

C-110 type

B
Grand master key
×pcs Specified No.

Master key×pcs Master key×pcs

Master key can be locked all
Specified No. Specified No.

CONNECTING
of under the master key

DEVICES
Block A Block B

Sub Key
× pcs × pcs × pcs × pcs × pcs × pcs × pcs × pcs × pcs × pcs

C
different Optional No.
number key Block A
different Block A Optional No.
number key and B

Key will be decided depends on a decision that a common use with door lock or the master key is needed or not.
In the case of C-110, if the master key specified No. and sub key specified No. are selected, the master key can be
possible to lock the sub key.
It's not available to make an additional subkey, becase of the relationship between masterkey and subkey are already
decided at the stage at manufacture.
Life time of the key is 10,000 times. (Insertion - Extraction)
ELECTRONIC
DEVICES

Available character for master key No. / key No. (change key)
D

Max. number Master key No. 6 (7 for number only)

of character Key No. 7
Available Number (0 - 9), Alphabet (A - Z)
character ∗Blank is not available.
CENTER PARTS
CONTROL

A14
E
CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
SPECIAL SPECIFICATION SWITCH CODING FOR ORDERING

3 Switch with padlock mechanism

Locked with a padlock. To open / close the switch, unlock the padlock and
Available notch : S, H, T, F, and SB.
Max. unit No. is 10.
then open / close the key while pushing or pulling the unlocking lever.
Normaly a padlock is attached to the down

B-KH-H2-2B2A-LD-B NUKI B side of the switch.

Padlock is not attached.
Please use a padlock with diameter of 6 mm.
Unlocking Color of
Code Switch lever type
Contact code handle / flange
B type Pushing type
No. of contacts
BH type Pulling type Handle code Key lock position
No. of units
Notch code

OUTLINES

B-KH
B type ∗ The screw side is on the right/left, and the mounting hole is on the horizontal in this type.
In case of B type, generally the screw side is on the up/down, and the mounting hole is on the vertical.

Lock
release
lever

Key lock position

NUKI NUKI NUKI NUKI NUKI

∗ Padlock is not attached. NUKI NUKI NUKI NUKI
(Use a padlock with diameter of 6 mm).
NUKI NUKI NUKI NUKI NUKI
Mounting hole

BHP
BH type
Mounting panel: = to Remove the padlock and push the lock release lever for
handle operation. The switch will be locked automatically
after releasing your hand, then please lock with a padlock.

No. of units

Padlock: 6

Lock release lever

∗ Padlock is not attached. Mounting hole

(Use a padlock with diameter of 6 mm).

A15
 SWITCH

A SWITCH
4 High-frequent type switch
This cam switch is designed for high-frequent heavy-duty uses,
Available notch : S, H, T, F, and SB. The 30°
version is also available.
in iron manufacture and chemical plants, etc. High-frequent operation type.
Please specify if you need the oil-proof type. In
BM-H2-2B2A-LD-B the case of oil-proof type, PBT resin is used for
the case.
Notch code Handle

Code Switch No. of contacts Color of

Contact code handle / flange
BM B type
BHM BH type No. of units

PILOT LAMP &

INDICATOR
OUTLINES

B
BM
B type
Mount the flange and main
body with M5 × 12
countersunk screws.
(at vertical pitches of 30 mm)

Mount the switch directly to the

panel with M5 × 10 pan head
screws.

CONNECTING
(at horizontal pitches of 30 mm)

DEVICES
Mounting hole

BHM C
ELECTRONIC

BH type
DEVICES
D

Mounting panel: = to Mounting hole

CENTER PARTS

No. of units
CONTROL

A16
E
CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
SPECIAL SPECIFICATION SWITCH CODING FOR ORDERING

5 Switch with indicator lamp (separate)

This is a switch that an indicator lamp is attached on top.
The notches and specification are the same as
those of the standard switches.
An indicator mounting hole is additionally required. For the circuit, voltage, and display color of the
Part of lamp display indicator, please see the following table and
specify the corresponding numbers.

BL-H2-2B2A-215-LD-B Circuit Voltage Display color

1 For 1 indicator lamp 1 24V DC 1 W (Milky white)
Notch code Circuit Display Color of 2 For 2 indicator lamps 2 48V DC 2 R (Red)
color handle / flange
Code Switch Contact code 3 For 3 indicator lamps 3 100 / 110V DC 3 G (Green)

BL B type No. of contacts 4 125V DC 4 O (Orange)

Voltage Handle code
BHI BH type No. of units 5 100 / 110V AC 5 GR
6 200 / 220V AC 6 GWR
7 30V DC 7 GOR
9 Special 9 Special 9 Special

OUTLINES

BL
B type

Panel mounting:
Panel cutout

Mounting hole

BH I
BH type

Panel mounting:

Mounting hole

Lamp position
No. of units
For 1 indicator lamp

For 2 indicators lamps

For 3 indicators
lamps
› The lamp power supply unit is not included in the above number of units.

A17
 SWITCH

A SWITCH
6 Switch with indicator lamp (built-in)
This is a switch that a signal indicator is attached on top.
Available notch: S, H, T, F and SB, SR, SY also
available.
Part of lamp display For the circuit, voltage, and display color of the
indicator lamp, please see the following table and
specify the corresponding numbers.
BHS-S2-2B2A-235-LP-B Circuit Voltage Display color

Notch code Circuit Handle code 1 For 1 indicator lamp 1 24V DC 1 W (Milky white)
2 For 2 indicator lamps 2 48V DC 2 R (Red)
No. of units Contact code Display Color of
Code Switch
color handle / flange 3 For 3 indicator lamps 3 100 / 110V DC 3 G (Green)
BHS BH type No. of contacts
Voltage 4 125V DC 4 O (Orange)
BH type

PILOT LAMP &

5 100 / 110V AC 5 GR
BHS-B (with rear
terminal block) 6 200 / 220V AC 6 GWR

INDICATOR
7 30V DC 7 GOR
9 Special 9 Special 9 Special

OUTLINES

B
BHS
BH type

CONNECTING
DEVICES
Mounting hole

Mounting panel: = to

Lamp position
No. of units

C
For 1 indicator lamp

For 2 indicators lamps

For 3 indicators
lamps

With indicator lamp (built-in) and rear terminal block type

BHS-B
BH type
ELECTRONIC

(dimensions with rear terminal block)

DEVICES
D

Mounting hole

Mounting panel: = to
› For the BHS-B type, the maximum number of unit is 3. (6 contacts)
Pulling stroke:
Lamp position
lamp
CENTER PARTS

lamps
CONTROL

lamps

A18
E
CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
SPECIAL SPECIFICATION SWITCH CODING FOR ORDERING

7 Lockout relay switch (Coil type)

This is an auxiliary relay used in a circuit breaker or the main part of adjustment.
For the switching speed, please see
technical data on A55.
The notch is 2 stage.
BA-6 2A2B-DC24V-LP-B Max unit No. is 8.

Handle code Color of

Code Switch handle / flange
BA-6 B type Contact code Circuit voltage
BHE BH type No. of contacts

OUTLINES

BA-6
B type
t =2.3 to 3.2 (standard)

Example of circuit Example of usage

Contacts of protective relay

Locked

Mounting hole Fault indica-

tion, etc. Alarm, etc.

Features and application

The coil is of instantaneous rating specification, so requiring that the
self-contact be connected in series to the coil as illustrated.

Contacts specified by a user.

BHE The contacts for the provided coil is not included in the contacts ordered.

BH type

Coil specifications
Circuit voltage
Coil resistance

Mounting hole

∗ P and N polarities for the coil terminals are free.

No. of units

A19
 SWITCH

A SWITCH
8 Lockout relay switch (Solenoid type)
Auxiliary relays, which is more compact and increase speed of operating than previous models.

B-MR-2001-B-LP B Closed circuit:8ms (includes bounce:15ms) / Open

circuit:8ms High speed operation type.
By putting coil contact into the unit and can be made
compact.
Contact arrangement Handle code Color of Product having high environment resistance (equivalent of
handle / flange IP40)
Code
Notch is double.
Manual reset
Code Max unit No. is 10.

Code Switch

PILOT LAMP &

B type
BH type

INDICATOR
OUTLINES

B-MR

B
B type

* This product has 4 taps

for mounting, so both
images of mounting

CONNECTING
below are available.

DEVICES
C
Circuit voltage ( ) 24V 100/110V 125V 200/220V
Coil resistance ( )

BH-MR
A contact (open circuit time) B contact
Contact
BH type (open circuit time)
ELECTRONIC
Operating time Beginning of bounce
Single contact
DEVICES

* This product has 4

taps for mounting, so
both images of
mounting below are
available.
D
CENTER PARTS

Operation method and caution for using this product

CONTROL

Operation method Caution

By coil application from A position, lockout to the B position. Do not offer the reset operation when external signal comes to
By tur n the handle clockwise manually from B position, lock the coil. As it may cause damage (burnout) to the coil.
(return operation) at A position.

A20
E
CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
SPECIAL SPECIFICATION SWITCH CODING FOR ORDERING

9 Minute current switch (BY) For the specification, please see technical data on A56.
The notches are the same as those of the standard
This switch is used in the applications requiring environmental resistance or
switches.
using minute electric current.
For a contact, X is added to the standard contact symbol
BY-H2-2BX2AX-LD-B like AX.
This switch can be assembled within a switch with
standard contacts. However the units for the contacts of
Handle code
Color of
Code Switch No. of contacts the minute current is exchisive unit.
handle / flange
BY B type No. of units Contact of minute current switch Ex.
BHY BH type Notch code (Ends with “X”) Standard contact
Minute current contact
∗ Outline is same as standard B / BH type.
In case of lapping contact, L (Minute current lapping
contact) is added after X (Minute current contact).
Ex.
Standard contact
Minute current lapping contact
Minute current contact is applicable to other standard
products.
Ex.

OUTLINES

BY
Mounting panel: = to

Unit color: Light blue

Mounting hole

BHY

Mounting panel: = to

Mounting hole

A21
 SWITCH

A SWITCH
10 Rear terminal type switch
Since the terminal part is arranged to the rear side, it’s possible to use the space effectively.
It’s possible to chose any notches except pull
(push) type.

BH-B-H2-2B2A-LD-B
Basic type Notch code Handle code Color of
handle / flange
No. of units
No. of contacts Contact code

PILOT LAMP &

INDICATOR
B
OUTLINES

BH-B
dimensions with rear terminal block

CONNECTING
DEVICES
Mounting hole

C
Mounting panel: = to Body Cover

∗ For the BH-B type , the maximum number of unit is 3. (6 contacts)

ELECTRONIC
DEVICES
D
CENTER PARTS
CONTROL

A22
E
CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
MOUNTING HOLE DIMENSIONS

Manual
H.T return
S Automatic
return
SB Pushing and
SQ pulling

W Dual body
type
BA-6 Lockout relay
B TYPE

Mounting screw countersunk screws: 2 countersunk screws: 2 countersunk screws: 2 countersunk screws: 2 countersunk screws: 2

Key: right Key: bottom Key: bottom Key: right

H.T Manual
return
S Automatic
return
SB Pushing

pan head screws: 2

countersunk screws: 2 countersunk screws: 2 countersunk screws: 2 countersunk screws: 2 countersunk screws: 2

Key: bottom Key: right

Manual
H.T return
S Automatic
return
SB Pushing and
SQ pulling
W Dual body
type
BHE Lockout relay
BH TYPE

Mounting screw countersunk screws: 2 countersunk screws: 2 countersunk screws: 2 countersunk screws: 2

Key: bottom Key: right

H.T Manual
return
S Automatic
return
SB Pushing

countersunk screws: 2 pan head screws: 2

countersunk screws: 2 countersunk screws: 2 countersunk screws: 2

A23
 SWITCH
INSTRUCTIONS FOR CONTACT ARRANGEMENT DIAGRAM

A SWITCH
1 Graphic symbol 3 Notes on diagrammatic representation
Contact type Symbol 1. When the rotational angle of the handle is less
than 180 degrees
Normal contact (When the rotational angle of the notch is 45 degrees)
Close keep contact When the total number of contacts (total number of contacts)
is even (number of units) = 2
Continuous closing contact
When the total number of contacts (total number of contacts)+1
Over lapping contact is odd (number of units) = 2
Number of stages
Operation Symbol Each units has 2 contacts. This means that the number of

PILOT LAMP &

units is half of the total number of contacts.
Manual return (rotating direction) Not indicated
However, if the handle is turned by 180 degrees or more,

INDICATOR
Manual return (axial direction) each units may not be includes 2 contacts.
Auto return (to neutral position)
2. When the rotational angle of the handle is 180
Auto return (axial direction) degrees or more
(5 notches at 45 degrees, 3 notches at 90 degrees or more)
A single cam actuates 2 contacts, upper and lower side.
2 Development representation method

B
Therefore, when the cam is rotated by 180 degrees or more,
Contact arrangement diagrams should be viewed from the its concavity to close either contact may also close the other
panel surface with the handle positioned below. contact. In this case, the upper and lower contacts cannot
Vertical line shows notch positions, and horizontal line shows be combined freely.
conected circuits with terminal numbers. To enter the contact
symbols, follow the order of terminal numbers starting with the
front stage.
Fig. 1 T2-1B1AT1BAL1TL
Fig. 1 shows the 45-degree, Desired contact arrangement Actual contact arrangement
3-stage switching type.
Second

CONNECTING
stageTerminal 1-2 is closed at the B
notch.
First Terminal 3-4 is continuously

DEVICES
c cam
stage closed at the A and T notches.
Terminals 5-6 and 7-8 are
simultaneously closed
(overlapping) in the middle For B notch For E notch
between the A and T notches.
Fig. 2 SBZ3-1Y1Z1M1N1C1A

C
3. Contact diagram of BY type arrangement (example)
Fig. 2 shows the automatic return
Third type by pulling. The handle can be
stage pulled at the central position, and it F3-2B2AX2TX
returns to the central position after
Second
stage
releasing the handle. G
Terminal 1-2 is closed at the B G
First notch. Even if it returns to the Twin contacts with gold plating
stage central position, it remains closed. G
It is opened at the A notch.
G
Terminal 5-6 is opened at the A
ELECTRONIC
notch.
Terminal 7-8 is opened at the B Contacts standard
Terminal 3-4 is closed at notch.
DEVICES

the A notch. Even if it Terminal 9-10 is closed at the C

returns to the central notch.
position, it remains closed. Terminal 11-12 is closed at the A
It is opened at the B notch. notch.
Request contact Actual contact Contact arrangement when
D

arrangement arrangement terminal positions are corrected

Contact that has
no contacts to be Third Fifth Fourth
G cam is used G cam is used
combined unit unit unit
Contact that can Second Fourth Third
be combined with unit B cam is used B cam is used
other contacts unit unit

Contact that has First Third Second

no contacts to be unit unit B cam is used unit C cam is used
combined
CENTER PARTS

Second First
unit D cam is used unit B cam is used

First
CONTROL

unit B cam is used

A24
E
CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
CONTACT ARRANGEMENT DIAGRAM FOR B AND BH TYPE CAM SWITCHES
Position Number
Contact
making angle Overlap
contact

Standard
contact

Standard cam (45 degrees) Set Position No.

Overlap cam (45 degrees) Set Position No.

Overlap cam

A25
 30-degrees cam
30°
contact

Set Position No.

Position Number
SWITCH

A26
CONTROL ELECTRONIC CONNECTING PILOT LAMP &
E D C B A SWITCH
CENTER PARTS DEVICES DEVICES INDICATOR
CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
VOLTMETER AMMETER SWITCH
HOW TO ORDER

B-V3-HDP-B JUMPER
Code Switch Type Handle code Color of Code Jumper
(page A27 to 30) (page A6) handle / flange
B type (Blank) No jumper
BH type JUMPER With jumper
›The mark “ ” shows a jumper.

STANDARD ARRANGEMENT DIAGRAM

Notice: Jumpers are not standard accessory.
If it’s necessary, please instruct “with jumper”.
a) For voltmeter (standard handle: HDP)
Type
3-phase, 3-wire, 2-PT
Jumper

Nameplate No.
54-753 (E)

Type
3-phase, 3-wire, 2-PT

Nameplate No.
54-490 (E)
Type
3-phase, 3-wire, 3-PT

Nameplate No.
54-752

Type
3-phase, 3-wire, 3-PT

Type
3-phase, 4-wire, 3-PT

Nameplate No.
54-558
› If added “E” to the end of nameplate number, the nameplate in English shall be attached. For futher details, please see page A51 to A52 for nameplate.
Ex) 54-753 : Japanese 54-753E : English

A27
 SWITCH
a) For voltmeter (standard handle: HDP)

A SWITCH
Type 3-phase, 3-wire, 2-PT

Nameplate No.
54-557 (E)

Type 3-phase, 4-wire, 3-PT

PILOT LAMP &

INDICATOR
Nameplate No.
54-850 (E)

Type

B
single 3-wire, 2-PT

CONNECTING
DEVICES
b) For ammeter (standard handle: HDP)
Type 3-phase, 3-wire, 2-CT

C
Nameplate No.
54-755 (E)
Type
3-phase, 3-wire, 2-CT
ELECTRONIC
DEVICES

Nameplate No.
54-495 (E)

Type
3-phase, 3-wire, 3-CT
D

Nameplate No.
54-755 (E)
› For details of nameplates, see A51 to A52 and subsequent pages.
CENTER PARTS
CONTROL

A28
E
CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
STANDARD ARRANGEMENT DIAGRAM
b) For ammeter (standard handle: HDP)
Type
3-phase, 3-wire, 3-CT

Nameplate No.
(E)

Type
3-phase, 3-wire, 3-CT (when differential relay is used)

Nameplate No.
54-755 (E)

Type
3-phase, 3-wire, 3-CT (when differential relay is used)

Nameplate No.
54-495 (E)
Type
3-phase, 3-wire, 2-CT

Nameplate No.
54-555 (E)

Type
for change ratio of Jumper
current transformation

Type
3-phase, 4-wire, 3-CT

Nameplate No.
54-556 (E)

Type
for change ratio of
current transformation

› If added “E” to the end of nameplate number, the nameplate in English shall be attached. For futher details, please see page A51 to A52 for nameplate.
Ex) 54-753 : Japanese 54-753E : English
A29
 SWITCH

A SWITCH
Type
3-phase, 3-wire, 3-CT

Nameplate No.
54-555 (E)

Type single-phase, 2-line

PILOT LAMP &

INDICATOR
Type

B
3-phase, 3-wire, 2-CT

Nameplate No.

CONNECTING
54-555 (E)

Type
3-phase, 4-wire, 3-CT

DEVICES
C
Nameplate No.
54-556 (E)

Type
3-phase, 4-wire, 3-CT

ELECTRONIC
DEVICES

Nameplate No.
54-556 (E)

Type
D

single 3-wire, 2-CT

CENTER PARTS
CONTROL

› For details of nameplates, see A51 to A52 and subsequent pages.

A30
E
 CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
CONTACT ARRANGEMENT DIAGRAM INDEX
Operation Notch code Contact number Page Operation Notch code Contact number Page
Automatic return 45° 3-position changeover
Automatic return
(45 degree operation) 45° 4-position changeover
Automatic return with 45° 5-position changeover
close keep contact
Automatic return type by 45° 6-position changeover
pulling and pushing
90° 2-position changeover

CONTACT ARRANGEMENT DIAGRAM

Automatic return (S, SB)
2 contacts (1 unit)
Type
(automatic return)
Detail

Contact
arrangement

Type (pulling)
Type
(automatic return)
Detail

Contact
arrangement

Type (pulling)

4 contacts (2 units)
Type
(automatic return)
Detail

Contact
arrangement

Type (pulling)
Type
(automatic return)
Detail

Contact
arrangement

Type (pulling)
Type
(automatic return)
Detail

Contact
arrangement

Type (pulling)
Type
(automatic return)
Detail

Contact
arrangement

Type (pulling)

A31
 SWITCH
CONTACT ARRANGEMENT DIAGRAM

A SWITCH
6 contacts (3 units)
Type
(automatic return)
Detail

Contact
arrangement

PILOT LAMP &

Type (pulling)

INDICATOR
Type
(automatic return)
Detail

Contact

B
arrangement

Type (pulling)
Type
(automatic return)
Detail

CONNECTING
DEVICES
Contact
arrangement

C
Type (pulling)

8 contacts (4 units)
Type
(automatic return)
Detail

ELECTRONIC

Contact
arrangement
DEVICES

Type (pulling)
D

Type
(automatic return)
Detail

Contact
arrangement
CENTER PARTS

Type (pulling)
CONTROL

A32
E
CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
CONTACT ARRANGEMENT DIAGRAM
Automatic return type (45 degree operation) (B, A)
2 contacts (1 unit) 4 contacts (2 units)
Type
Detail

Contact
arrangement

Automatic return type with close keep contact (SZ)

4 contacts (2 units) 6 contacts (3 units) 8 contacts (4 units)
Type
Detail

Contact
arrangement

Automatic return type and manual return type in axial direction (SQ)
4 contacts (2 units) 4 contacts (3 units)
Type
Detail

Contact
arrangement

6contacts (3 units) 8 contacts (4 units)

Type
Detail

Contact
arrangement

A33
 SWITCH

A SWITCH
90° 2-position changeover (H)
2 contacts (1 unit)
Type
Detail

Contact
arrangement

PILOT LAMP &

INDICATOR
Type
Detail

Contact
arrangement

B
4 contacts (2 units)
Type
Detail

CONNECTING
DEVICES
Contact
arrangement

C
Type
Detail

Contact
arrangement

ELECTRONIC

Type
DEVICES

Detail

Contact
arrangement
D

Type
Detail
CENTER PARTS

Contact
arrangement
CONTROL

A34
E
CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
CONTACT ARRANGEMENT DIAGRAM
90° 2-position changeover (H)
6 contacts (3 units)
Type
Detail

Contact
arrangement

Type
Detail

Contact
arrangement

Type
Detail

Contact
arrangement

Type
Detail

Contact
arrangement

8 contacts (4 units)
Type
Detail

Contact
arrangement

Type
Detail

Contact
arrangement

A35
 SWITCH

A SWITCH
8 contacts (4 units)
Type
Detail

Contact
arrangement

PILOT LAMP &

INDICATOR
10 contacts (5 units)

B
Type
Detail

Contact
arrangement

CONNECTING
DEVICES
Type
Detail

C
Contact
arrangement

ELECTRONIC
DEVICES

12 contacts (6 units)
Type
D

Detail

Contact
arrangement
CENTER PARTS
CONTROL

A36
E
CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
CONTACT ARRANGEMENT DIAGRAM
90° 2-position changeover (H)
12 contacts (6 units) 14 contacts (7 units)
Type
Detail

Contact
arrangement

16 contacts (8 units)
Type
Detail

Contact
arrangement

Type
Detail

Contact
arrangement

A37
 SWITCH

A SWITCH
16 contacts (8 units)
Type
Detail

PILOT LAMP &

Contact

INDICATOR
arrangement

B
18 contacts (9 units)
Type
Detail

CONNECTING
DEVICES
Contact
arrangement

20 contacts (10 units) C

ELECTRONIC

Type
Detail
DEVICES
D

Contact
arrangement
CENTER PARTS
CONTROL

A38
E
CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
CONTACT ARRANGEMENT DIAGRAM
90° 2-position changeover (H)
20 contacts (10 units)
Type
Detail

Contact
arrangement

24 contacts (12 units)

Type
Detail

Contact
arrangement

A39
 SWITCH

A SWITCH
24 contacts (12 units) 26 contacts (13 units)
Type
Detail

PILOT LAMP &

INDICATOR
Contact
arrangement

B
CONNECTING
DEVICES
28 contacts (14 units) 30 contacts (15 units) 32 contacts (16 units)
Type

C
Detail

ELECTRONIC
DEVICES

Contact
arrangement
D
CENTER PARTS
CONTROL

A40
E
CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
CONTACT ARRANGEMENT DIAGRAM
45° 3-position changeover (T)
2 contacts (1 unit)
Type
Detail

Contact
arrangement

Type
Detail

Contact
arrangement

4 contacts (2 units)
Type
Detail

Contact
arrangement

Type
Detail

Contact
arrangement

Type
Detail

Contact
arrangement

A41
 SWITCH

A SWITCH
4 contacts (2 units)
Type
Detail

Contact
arrangement

PILOT LAMP &

INDICATOR
Type
Detail

Contact
arrangement

B
Type
Detail

Contact
arrangement

CONNECTING
DEVICES
Type
Detail

Contact

C
arrangement

Type
Detail

Contact
ELECTRONIC
arrangement DEVICES
D

6 contacts (3 units)
Type
Detail
CENTER PARTS

Contact
arrangement
CONTROL

A42
E
CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
CONTACT ARRANGEMENT DIAGRAM
45° 3-position changeover (T)
6 contacts (3 units)
Type
Detail

Contact
arrangement

Type
Detail

Contact
arrangement

Type
Detail

Contact
arrangement

Type
Detail

Contact
arrangement

8 contacts (4 units)
Type
Detail

Contact
arrangement

Type
Detail

Contact
arrangement

A43
 SWITCH

A SWITCH
8 contacts (4 units)
Type
Detail

Contact
arrangement

PILOT LAMP &

INDICATOR
10 contacts (5 units)
Type
Detail

B
Contact
arrangement

CONNECTING
10 contacts (5 units) 12 contacts (6 units)

DEVICES
Type Type
Detail Detail

C
Contact Contact
arrangement arrangement

ELECTRONIC

14 contacts (7 units) 16 contacts (8 units) 18 contacts (9 units)

DEVICES

Type Type Type

Detail Detail Detail
D

Contact
arrangement
Contact
Contact
arrangement
arrangement
CENTER PARTS
CONTROL

A44
E
CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
CONTACT ARRANGEMENT DIAGRAM
45° 3-position changeover (T)
20 contacts (10 units) 24 contacts (12 units) 28 contacts (14 units)
Type Type Type
Detail Detail Detail

Contact
arrangement
Contact
arrangement
Contact
arrangement

45° 4-position changeover (F)

4 contacts (2 units)
Type
Detail

Contact
arrangement

6 contacts (3 units)
Type
Detail

Contact
arrangement

Type
Detail

Contact
arrangement

A45
 SWITCH

A SWITCH
8 contacts (4 units) 10 contacts (5 units) 12 contacts (6 units)
Type Type Type
Detail Detail Detail

Contact
arrangement Contact
Contact
arrangement
arrangement

PILOT LAMP &

INDICATOR
45° 5-position changeover (E)

B
4 contacts (2 units)
Type
Detail

CONNECTING
Contact

DEVICES
arrangement

C
6 contacts (3 units)
Type
Detail
ELECTRONIC
DEVICES

Contact
arrangement
D

Type
Detail
CENTER PARTS

Contact
arrangement
CONTROL

A46
E
CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
CONTACT ARRANGEMENT DIAGRAM
45° 5-position changeover (E)
8 contacts (4 units)
Type
Detail

Contact
arrangement

10 contacts (5 units) 12 contacts (6 units)

Type Type
Detail Detail

Contact
arrangement
Contact
arrangement

14 contacts (7 units) 16 contacts (8 units) 24 contacts (12 units)

Type Type Type
Detail Detail Detail

Contact
arrangement Contact
arrangement

Contact
arrangement

A47
 SWITCH

A SWITCH
30 contacts (15 units) 32 contacts (16 units)
Type Type
Detail Detail

PILOT LAMP &

INDICATOR
Contact

B
arrangement Contact
arrangement

CONNECTING
DEVICES
C
45° 6-position changeover (G)

6 contacts (3 units)
ELECTRONIC

Type
Detail
DEVICES

Contact
arrangement
D
CENTER PARTS
CONTROL

A48
E
CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
ACCESSORIES (selling separately)

Handle cover Jumper

B-H HCV For B and BH type 11 12
9 10
This cover is used to prevent mis-operation. It is a 7 8
5 6
magnet type that can be mounted on or removed 3 4
from a panel easily. 1 2

(Material: Polycarbonate resin)

Note: This cover cannot be used B type Example of usage of jumper
for the MP type handle. BH type Example of usage of jumper

BS jumper 1-3 BS jumper 1-5 BS jumper 5-9

Terminal protection cover B-H PL terminal cover 1

Mounting panel: t = 1 to 3.2
Handle HD
B-H PL terminal cover 1

Note: This cover cannot be used for a rear terminal type.

B-H PLS terminal cover PLS terminal cover

Mounting panel: t = 1 to 3.2

Note: This cover cannot be used for a rear terminal

BH-CVN- type.

Applicable unit number L (mm) Applicable unit number L (mm)

to units to units
to units to units Note: This cover cannot be used for a rear terminal type and a dual-body type.
to units
›The above shows standard type switches.
Please ask for special types.
A49
 SWITCH

A SWITCH
Flange (Nameplate) set

B flange set F panel set Indicator flange set BA-6 indicator flange set

PILOT LAMP &

INDICATOR
M5 10 countersunk 2 pcs. M5 10 countersunk 2 pcs. M5 10 countersunk 2 pcs. M5 10 countersunk 2 pcs.
Supplied Supplied Supplied Supplied
M4 15 SUS 3-piece 1 pc. M4 15 SUS 3-piece 1 pc. M4 15 SUS 3-piece 1 pc. M4 15 SUS 3-piece 1 pc.
screws screws screws screws
M2.6 4 tapping 4 pcs. M2.6 4 tapping 4 pcs. M2.6 4 tapping 4 pcs.

Handle

B
Code Shape Code Shape
LD-B Rose shape (large) Stick shape (large)
Rose shape (small) Stick shape (small)
Handle Color Rose shape (large) Pistol shape (large)
with dot

Code Color
code
B N1.5 Rose shape (small) Pistol shape (small)
BG 7.5BG3/3.5 Octagonal shape (large) Knob shape
Octagonal shape (small) Egg shape (large)
Octagonal shape (large) Egg shape (small)
with dot

CONNECTING
Octagonal shape (small) Beak shape (large)
Beak shape (small)

DEVICES
Please check a dimensions from page A6 “Handle”.

Quick nameplate attachment flange

C
HOW TO ORDER

No. Item Code Detail

Basic type B B/BH type cam operated switch
ELECTRONIC
Specification J Quick nameplate attachment flange
Set items Flange set Flange + Cover + Screw set
DEVICES

Color B Flamge color : Black (N1.5)

Supplied items SS Countersunk screw 5x10, 4 screws.
Material Modified PPE (UL94V-0) adapted to the fire laws.
* About how to order when attach this item to the main body of the cam
operated switch, please contact us separately.
D

OUTLINES ASSEMBLY DRAWING

FEATURES Rib Holding pins

• Screw for the nameplate attachment is
unnecessary.
• It’s possible to quick attachment of the
CENTER PARTS

flange without attachment screws.

Flange
• Decreasing of work time for nameplate Nameplate
CONTROL

attachment is possible. Cover

Rib within the cover can be attach any directions
(up or down, left or right) to the flange.

A50
E
CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
ACCESSORIES

Nameplate
For 2 notches Japanese

English

54-200E
54-201E
54-211E
54-217E
54-219E
54-220E
54-226E
54-233E
54-234E
54-236E
54-239E
54-252E
54-253E
54-282E
54-285E
54-289E
54-298E
54-2100E
54-2102E
54-2103E
54-2104E
54-2122E
54-2124E
54-2127E
54-2128E
54-2131E
54-2132E
54-2134E
54-2135E
54-2136E
54-2137E
54-2138E
54-2140E
54-2141E

54-299E
54-2106E
54-2107E
54-2108E
54-2109E
54-2120E
54-2121E
54-2123E
54-2126E
54-2130E

A51
 SWITCH

A SWITCH
For 3 notches Japanese English

54-339E
54-340E
54-342E
54-343E
54-389E
54-391E

PILOT LAMP &

54-396E
54-398E

INDICATOR
54-3105E

For 4 notches Japanese English

B
54-490E
54-495E
54-498E
54-499E

CONNECTING
54-753E
54-755E

DEVICES
54-767E

For 5 notches

C
Japanese English

54-555E
54-556E
54-557E
54-572E

ELECTRONIC
DEVICES

For 8 notches Japanese

D

English

54-850E
CENTER PARTS

54-855E
54-860E
CONTROL

A52
E
CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
ACCESSORIES

Nameplate
For indicator window type

Japanese English
Nameplate No. Nameplate No.
Plain (Outline only) I54-102E
I54-235E

I54-236E
I54-252E

For key operated type

Japanese English
Nameplate No. Nameplate No.
K54-229E
K54-236E
K54-401E

A53
 SWITCH

A SWITCH
For BHS type

PILOT LAMP &

Japanese

INDICATOR
Nameplate No. Remark
lamp
Plain (Outline only) lamps
lamps
lamps
lamps

B
lamps

For handle removal type

CONNECTING
DEVICES
›For handle removal type,
please check the removal
positions below.

C
Removal
position

Removal
position
ELECTRONIC
DEVICES
D
CENTER PARTS
CONTROL

A54
E
 CONTROL SWITCH
CAM-OPERATED SWITCH

B TYPE, BH TYPE
TECHNICAL DATA
Breaking and making current capacity
AC DC
Type
Test voltage (V) Test current (A) Load condition Test voltage (V) Test current (A) Load condition

121 165 26.4 11

242 110 Power factor: 52.8 6.6 Time constant:
B, BH, BHL
484 33 Pf = 0.6 to 0.7 121 1.65 L / R = 40±6ms
— — 242 0.88

Breaking / making circuit current capacity test

To conduct the opened / closed circuit current capacity test, connect the reactor or inductance, which is connected in series to a
resistor, to the switch as illustrated in Fig. 1 or 2. Using the test current specified in Table 1, perform CO 50 times for AC and 20
times for DC at intervals of 10 seconds when the voltage is 1.1 times the rated operating voltage of the switch. At this test,
check for:
(1) Short-circuit between poles or earth fault due to generated arc, or broken or burnt switch.
(2) Any other harmful fault in use

Note: CO means performing the closing action (C) and then the opening action (O) about 50 ms later. For a switch that has
some identical structures used for the same electric potential, select an adjacent contact or a contact that is most likely to
lead the arc to the frame and then carry out the test using the circuit shown in Fig. 1.

Fig.1 Fig. 2
Current
Current (AC or DC)
(AC or DC)

Protec- Non-live metallic part to be

Test sample grounded and non-live
tive fuse
Non-live metallic part to be metallic part that may be
grounded and non-live touched by humans.
metallic part that may be Test sample
touched by humans.
Testing fuse (bare copper
wire: 0.1 mm in diameter
and 50 mm in length)

Testing fuse (bare copper Resistor that allows current

wire: 0.1 mm in diameter of about 100 A to flow at
and 50 mm in length) short-circuit

Resistor that allows current Connect to power source

of about 100 A to flow at for the first half of the test
short-circuit counts and to power
source for the second half.

Note: For DC, connect a parallel resistor so that 1% of the test current value flows in parallel with the loads (R·L).
Table 1
Test current Power factor (AC) or
AC or DC Class Test voltage
Making Breaking time constant (DC L / R: ms)

0.6 to 0.7
AC 1.1 0.6 to 0.7
0.9 to 1.0
100±15
40±6
DC
7±1
1 max.
Note: shows for the rated operating current and shows the rated operating voltage.

Switching speed of lockout relay

(Example: BA-6 8A8B) 60

Closing time
Coil 60
Opening time
Coil
Switching time T1 (ms)

Switching time T2 (ms)

Contact Contact
50 50
T1 T2
40 40
30 30
48V DC 200 / 220V DC 200 / 220V DC
20 100 / 110V DC 125V DC 20 48V DC
100 / 110V DC 125V DC
10 10
Resistance of coil
Voltage 48V DC 100 / 110V DC 125V DC 200 / 220V DC 50 100 150 200 50 100 150 200
Applied voltage (V DC) Applied voltage (V DC)
Resistance 25 55 80 350
Note: The above voltage values shows the rated values of the coils.

A55
 SWITCH

A SWITCH
BY type minute electric current switch
The BY type switch is used to make / break a sequence BY type contact unit
control current or any other similar low-voltage, minute
Twin contacts
electric current circuit. It consists of a contact unit that
uses twin contacts.
The BY type switch allows for manufacturing an operation
switch that only uses the BY type contact unit. It also
allows for manufacturing a switch that incorporates both
the BY type contact unit and the standard contact (silver
contact) unit (see the right figure). Terminal screw
› A silver contact and gold contact cannot be combined in a

PILOT LAMP &

single unit. Unit color
The contact unit of the BY type switch has its housing : Minute electric

INDICATOR
current contact
designed as semitransparency blue, so that it can be Semitransparency
blue (Twin contacts)
discriminated from the standard type.

Colorless and clear

The specification and performance are shown in the following table. Standard contact

Contact spec Twin contacts

B
Contact resistance (m ) 50 max.
Electrical characteristics

Withstand voltage between contacts (V AC) 2,500

Insulation resistance ( ) 1,000M Display example of the above switch:

BY-H5-1B1A1BL1AL2BX2AX1BLX1ALX
Max. current carrying capacity (A) 2.0
The operating load range is as shown in the following graph.
Max. breaking voltage (V)› 110 DC / 110 AC Select a contact type according to your application.

CONNECTING
Load area
Max. breaking current (A)› 0.5 DC

DEVICES
Min. applicable load 5V DC, 1mA
characteristics
Environmental

Shock resistance (m/s2) 50

Minute electric
Vibration resistance (m/s2) 2 current contact
(Twin contacts) Standard

C
contact
(silver contact)
Operating temperature (°C) –20 to 60

› Resistance load

Contact protective circuit

If inductive load or load that causes surge current (rush current) to flow (load-carrying capacity, lamp, long cable, or the like) is
used as the load for the twin contacts, a contact protective circuit is required and shown below:

Inductive load Load-carrying capacity Wiring capacity

ELECTRONIC
DEVICES

Load
Load
Wiring Load
capacity
D

max.

If any electromagnetic relay, solenoid, or counter In this case, a capacitor is connected in parallel If wiring is carried out at a long distance
having an inductance component is used as load, or in series in a closed circuit including twin between the load and twin contacts, the
the energy stored in the inductance causes contacts. The rush current that flows when the contacts are affected by the capacitance
reverse voltage to be generated when the capacitance is charged or discharged can cause resulting from the cable. Ls differs depending on
contacts are separated from each other. This remarkable deterioration of the contacts. To the load current, but approximately 0.5 to 5 mH
CENTER PARTS

reverse voltage reaches even several hundred prevent this rush current, the above method is is assumed for the circuit.
volt, which can cause remarkable deterioration of generally known and should be used for your
the contacts. As a protective circuit, the above reference.
CONTROL

method is available.

A56
E