8 Utilization requirements

Installation of single switches with safety functions

•฀Use only switches with the symbol (see figure on the side).
•฀Connect the safety circuit to the NC normally closed contacts (11-12, 21-22 or 31-32).
•฀The NO normally open contacts (13-14, 23-24, 33-34) should be used only for signalling; these contacts are not
to be connected with the safety circuit. However, if two or more switches are used on the same guard, a connection
can be established between the NO contacts and the safety circuit.
In this case at least one of the two switches must have positive opening and a normally closed contact NC (11-12,
21-22 or 31-32) must be connected to the safety circuit.
•฀Actuate the switch at least up to the positive opening travel shown in the travel diagrams with symbol .
•฀The actuation system must be able to exert a force that is greater than the positive opening force, as specified in
brackets below each article, next to the minimum force value.
•฀The device must be affixed in compliance with EN ISO 14119.

Whenever the machine guard is opened and during the whole opening travel, the switch must be pressed directly (fig. 1) or through a rigid
connection (fig. 2).
Only in this way the positive opening of the normally closed NC contacts (11-12, 21-22, 31-32) is guaranteed.

mechanical stop

FD 602-M2 FD 602-M2 FD 615-M2 FD 615-M2

Fig.1 Fig.2

In safety applications with only one switch for each guard, the switches must never be activated by a release (fig. 3 and 4) or through a non
rigid connection (i.e. by a spring).

Fig.3

Fig.4

223 General Catalogue Detection 2019-2020

 8
Mechanical stop
Acc. to EN ISO 14119 paragraph 5.2 letter h) the position sensors must not be used as mechanical stop.
mechanical stop

mechanical stop

The actuator must not exceed The guard must not use the switch head as a The actuator must not strike directly against the
the max. travel as indicated in the mechanical stop. switch head.
travel diagrams.

mechanical stop

>180° ≤180°

The actuator must not strike directly against the magnetic The opening angle of safety hinge switch HP, HC and HX series must not
sensor. exceed 180°.

Actuation modes
Recommended application Application to avoid Forbidden application
This application is possible, but increased mechanical stress
may shorten the operating life of the switch

0° ÷ 30
30° ÷ °
45°
45°

30° 90°

≤฀45° ≤฀45° >฀45°

>฀30° >฀30°

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8 Utilization requirements

Switches for heavy duty applications

Maximum and minimum actuation speed - FD-FL-FP-FC series

Roller lever --Type

Type11 Roller plunger --Type
Type22

Vmax Vmin Vmin Vmax Vmin Vmin

ϕ (m/s) (mm/s) (mm/s) ϕ (m/s) (mm/s) (mm/s)
L R L R
15° 2,5 9 15° 1 4 0,04
30° 1,5 8 30° 0,5 2 0,02
0,07
45° 1 7 45° 0,3 1 0,01
60° 0,75 7

Roller lever --Type

Type33 Plunger - Type 4
Vmax Vmin Vmin Vmax Vmin Vmin
ϕ (m/s) (mm/s) (mm/s) (m/s) (mm/s) (mm/s)
L R L R
15° 1 5 0,05 0,5 1 0,01
30° 0,5 2,5 0,025
45° 0,3 1,5 0,015

Contact type:

R = snap action
L = slow action

Tightening torques FD-FP-FL-FC-FG-FS-NG-NS series

1 Cover screws 0.8 … 1.2 Nm
2 Head screws 0.8 … 1.2 Nm
3 Lever screw 0.8 … 1.2 Nm
4 Protection caps (conduit entry M20/PG13.5)1.2 … 1.6 Nm
(conduit entry M16/PG11) 1 … 1.4 Nm
5 Contact block screws 0.6 … 0.8 Nm
6 M5 fixing screws, body FD, FP, FL, FC, FG, FS, NG
2 2
(with washer for FS series) 2 … 3 Nm
7 M5 fixing screws, body NS
(with washer) 3 Nm
8 ฀Actuator฀screws฀VF฀KEY•••฀฀ 1.2 … 1.6 Nm
6
2

6 8
2

3 7

1
5
5
6

4 4

1
1 2
FD - FP - FL - FC FS NS FG - NG

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 8
FD-FP-FL-FC series switches for heavy duty applications
Travel diagrams

Group 1 Group 2 Group 3 Group 4 Group 5 Group 6

Contact block inverted contacts

0 1.3 6 0 1.6 8 0 8° 0 20° 75° 0 20° 75° 0 3.3 8

2
2x(1NO-1NC) 0.7 4° 2.5
0.9 13° 13°
0 1.3 6 0 1.7 8 0 10° 0 20° 75° 0 20° 75° 0 5.3 8
3
1NO-1NC 0.8 1.1 5° 13° 13° 4.5

0 2.2 4 6 0 2.7 4.9 8 0 15° 0 30° 60° 75° 0 22° 52° 75° 0 2.9 8
5
1NO+1NC 1.1 1.4 5° 17° 9° 1.7

0 1.5 3 6 0 1.8 3.7 8 0 22° 42° 75° 0 14° 34° 75° 0 2.3 8
6 /
1NO+1NC 3.4 4.2 42° 34° 0.8

0 3.1 4.6 6 0 3.8 5.7 8 0 40° 60° 75° 0 32° 52° 75° 0 1 8
7 /
1NO+1NC 1.6 2 23° 15° 2.2

9 0 2.9 4.4 6 0 3.6 5.4 8

/ 0 40° 60° 75° 0 32° 52° 75° 0 1 8
2NC

10 0 1.4 6 0 1.7 8 0 9° 0 22° 75° 0 14° 75° 0 2.5 8

2NO
0 2 4 6 0 2.5 4.9 8 0° 27° 57°75° 0 3.5 8
11 / /
2NC 0.6 0.7 11° 2.1

0 2.9 6 0 3.6 8 0 38° 75° 0 30° 75° 0 2.6 8

12 /
2NO 1.5 1.8 22° 14° 1.1

0 0.8 2.3 6 0 1 2.8 8 0 14° 34° 75° 0 6° 26° 75° 0 1 8

13 /
2NC 3 4.5 3.7 5.5 41° 61° 33° 53° 3.2

2.9 3.6 0 34°

0 1.4 6 0 1.7 8 22° 42° 75° 0 14° 75° 0 0.9 8
14 /
2NC 3 4.5 3.7 5.5 40° 60° 32° 52° 2.5

0 1.4 6 0 1.7 8 0 22° 75° 0 14° 75° 0 1 8

15 /
2NO 3 3.7 40° 32° 2.6

66° 0 26° 30°

16 / / / / /
2NC 37° 26° 66°

0 1.5 3 6 0 1.8 3.7 8 0 10° 0 23° 43° 75° 0 15° 35° 75° 0 2.4 8
18
1NO+1NC 2 2.5 13° 29° 21° 1.9

0 1.5 3 6 0 1.8 3.7 8 0 10° 0 23° 43° 75° 0 15° 35° 75° 0 2.4 8
20
1NO+2NC 2 13° 29° 21° 1.9
2.5

3 3.7 0 10° 0 23° 43° 75° 35°

21 0 1.5 6 0 1.8 8 0 15° 75° 0 2.4 8
3NC
0 1.5 3 6 0 1.8 3.7 8 0 10° 0 23° 43° 75° 0 15° 35° 75° 0 2.4 8
22
2NO+1NC 2 2.5 13° 29° 21° 1.9

0 1.5 3 4.5 6 0 1.8 3.75.6 8 0 23° 43°60° 75° 0 15° 35°52° 75°
28 / /
1NO+2NC 2 5.5 2.5 6.9 29° 70° 21° 62°

0 1.5 3 6 0 1.8 3.7 8 0 23° 43° 75° 0 15° 35° 75°

29 / /
3NC 4.5 5.5 5.6 6.9 60° 70° 52° 62°

0 1.5 3 6 0 1.8 3.7 8 0 23° 43° 75° 0 15° 35° 75°

30 / /
3NC 4.5 5.5 5.6 60° 70° 52° 62°
6.9

3 0 1.8 3.7 8 0 10° 0 23° 43° 75° 0 15° 35° 75° 0 2.4 8
33 0 1.5 6
1NO+1NC 2 2.5 12° 27° 19° 2.1

3 3.7 0 10° 0 23° 43° 75° 0 2.4 8

34 0 1.5 6 0 1.8 8 0 15° 35° 75°
2NC
0 3.4 4.9 6 0 4.3 6.2 8 0 45° 65° 75° 0 37° 57° 75° 0 3 8
37 /
1NO+1NC 1.5 1.9 18° 10° 1.1

66 0 1.4 2.9 6 0 1.7 3.6 8

/ 0 22° 42° 75° 0 14° 34° 75° 0 0.9 8
1NC

67 0 1.4 6 0 1.7 8 0 9° 0 22° 75° 0 14° 75° 0 2.5 8

1NO

Legend
Closed contact | Open contact | Positive opening travel acc. to EN 60947-5-1 | Switch pressed / Switch released

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8 Utilization requirements

Switches for standard applications

Maximum and minimum actuation speed - FR-FM-FX-FZ-FK series

Roller lever - Type 1 Roller plunger - Type 2

Vmax Vmin Vmin Vmax Vmin Vmin

ϕ (m/s) (mm/s) (mm/s) ϕ (m/s) (mm/s) (mm/s)
L R L R
15° 2,5 9 15° 1 4 0,04
30° 1,5 8 30° 0,5 2 0,02
0,07
45° 1 7 45° 0,3 1 0,01
60° 0,75 7

Roller lever - Type 3 Plunger - Type 4

Vmax Vmin Vmin Vmax Vmin Vmin

ϕ (m/s) (mm/s) (mm/s) (m/s) (mm/s) (mm/s)
L R L R
15° 1 5 0,05 0,5 1 0,01
30° 0,5 2,5 0,025
45° 0,3 1,5 0,015

Roller plunger - Type 5

Contact type:

R = snap action Vmax Vmin Vmin

L = slow action ϕ (m/s) (mm/s) (mm/s)
L R
15° 0,3 4 0,04
30° 0,2 2 0,02

Tightening torques - FR, FX, FK and FW series Tightening torques - FM and FZ series
1 Cover screws 0.7 … 0.9 Nm 1 Cover screws 0.5 … 0.7 Nm
2 Head screws 0.5 … 0.7 Nm 2 Head screws 0.5 … 0.7 Nm
3 Lever screw 0.7 … 0.9 Nm 3 Lever screw 0.8 … 1.2 Nm
4 Protection caps 1.2 … 1.6 Nm 4 Protection caps 1.2 … 1.6 Nm
5 Contact block screws 0.6 … 0.8 Nm 5 Contact block screws 0.6 … 0.8 Nm
6 M4 fixing screws, body 6 M4 fixing screws, body 2 … 3 Nm
(with washer for FR-FK series) 2 … 2.5 Nm
7 M5 fixing screws, body
(with washer for FW series) 2 … 2.5 Nm
8 ฀฀Actuator฀screws฀VF฀KEY•••฀฀ 1.2 … 1.6 Nm

2 8
2 2
7
3 3
6
6
1 1
1
5
5
4 5 4
4

FR - FX - FK - FM FW FZ

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FR-FM-FX-FZ-FK series switches for standard applications
Travel diagrams

Group 1 Group 2 Group 3 Group 4 Group 5 Group 6 Group 7

Contact block inverted contacts
0 1.3 6 0 2 8 0 3 13 0 9° 0 17° 75° 0 17° 75° 0 5.4 8
2
2x(1NO-1NC) 0.7 1.1 1.6 4° 10° 10° 4.8
0 1.3 6 0 2 8 0 3 13 0 9° 0 17° 75° 0 17° 75° 0 3.4 8
3
1NO-1NC 0.8 1.2 4°
1.8 10° 10° 2.9
0 2.2 4 6 0 3.3 6 8 0 5.1 9.2 13 0 17° 0 30° 60° 75° 0 25° 55°75° 0 5 8
5
1NO+1NC 1.1 1.7 6° 15° 10° 3.8
2.5
0 1.5 3 6 4.5 0 3.5 6.9 13 0 20° 40° 75° 35° 0 4.6 8
6 0 2.3 8
/
0 15° 75°
1NO+1NC 3.1 4.7 7.1 42° 35° 3

0 3.1 4.6 6 6.9 10.6 0 41° 61° 75° 56° 75° 0 3 8

7 0 4.7 0 7.1
/
0 36°

1NO+1NC 1.6 2.4 8 3.7 13 22° 17° 4.5

0 2.9 4.4 6 0 4.4 6.6 0 6.7 10.1 / 0 39° 75° 0 34° 54° 75° 0 3.1 8
9
2NC 8 13 59°

10 0 1.4 6 0 2.1 8 0 3.2 13 0 10° 0 20° 75° 0 15° 75° 0 4.6 8

2NO
0 2 4 6 0 3 6 8 0 4.6 9.2 13 0° 26° 56° 75° 0 5.6 8
11 / /
2NC 0.6 0.9 1.4 7° 4
0 2.9 6 0 4.4 8 0 6.7 13 0 21° 0 37° 75° 0 32° 75° 0 4.7 8
12
2NO 1.5 2.3 3.5 8° 19° 14° 3.3
0 2.3 0 0 0 26°
0.8 6 1.2 3.5 8 1.8 5.3 13 11° 31° 75° 6° 75° 0 3.1 8
13 /
2NC 3 4.5 4.5 6.8 6.9 10.4 40° 60° 0 35° 55° 5.3

0 1.4 2.9 6 0 2.1 4.4 8 0 3.2 6.7 13 0 19° 39° 75° 0 14° 34° 75° 0 3 8
14 /
2NC 3 4.5 4.5 6.8 6.9 10.4 40° 60° 35° 55° 4.7

0 1.4 6 0 2.1 8 0 3.2 13 0 19° 75° 0 14° 75° 0 4.7 8

15 /
2NO 3 4.5 6.9 40° 35° 3.1

75° 0 28° 48°

16 / / / / / /
2NC 48° 28° 75°

0 1.5 3 6 0 2.3 4.5 8 0 3.5 6.9 13 21°  40° 35° 0 4.6 8

18 0 10° 0 20° 75° 0 15° 75°
1NO+1NC 2 3 4.6 14° 27° 22° 4.1

0 1.5 3 6 0 2.3 4.5 8 0 3.5 6.9 13 0 10° 21°  0 20° 40° 75° 0 15° 35° 75° 0 4.6 8
20
1NO+2NC 2 3 4.6 14° 27° 4
22°

3 4.5 6.9 21° 35°

21 0 1.5 6 0 2.3 8 0 3.5 13 0 10° 0 20° 40° 75° 0 15° 75° 0 4.6 8
3NC

0 1.5 3 6 0 2.3 4.5 8 0 3.5 6.9 13 0 10° 21° 0 20° 40° 75° 0 15° 35° 75° 0 4.6 8
22
2NO+1NC 14° 4.1
2 3 4.6 27° 22°

0 1.5 3 4.5 6 0 2.3 4.5 6.5 8 0 3.5 6.9 13 0 20° 40° 58° 75° 0 15° 35°53° 75° 0 1.8 4.6 8
28 /
1NO+2NC 2 5.5 3 7.5 4.6 10.2 12.5 27° 70° 22° 4
65°

0 1.5 3 6 0 2.3 4.5 8 0 3.5 6.9 13 0 20° 40° 75° 0 15° 35° 75° 0 4.6 8
29 /
3NC 4.5 5.5 6.5 7.5 10.2 12.5 58° 70° 53° 1.8
65°

0 1.5 3 6 0 2.3 4.5 8 0 3.5 6.9 13 0 20° 40° 75° 0 15° 35° 75° 0 4.6 8
30 /
3NC 4.5 5.5 6.5 7.5 10.2 12.5 58° 70° 53° 1.8
65°

3 0 2.3 4.5 8 21° 

33 0 1.5 6 0 3.5 6.9 13 0 10° 0 20° 40° 75° 0 15° 35° 75° 0 4.6 8
1NO+1NC 2 3 4.6 14° 25° 20° 4.3

34 0 1.5 3 6 0 2.3 4.5 8 0 3.5 6.9 13 0 10° 21°  0 20° 40° 75° 0 15° 35° 75° 0 4.6 8
2NC
0 3.4 4.9 0 5.2 7.4 0 7.8 13 0 45° 65° 0 40° 60° 75° 0 2.8 8
37 /
1NO+1NC 1.5 6 2.3 8 3.4 11.2 18° 75° 13° 4.9

66 0 1.4 2.9 6 0 2.1 4.4 8 0 3.2 6.7 13 0 10° 21°  0 19° 39° 75° 0 14° 34° 75° 0 3 8
1NC

67 0 1.4 6 0 2.1 8 0 3.2 13 0 10° 0 20° 75° 0 15° 75° 0 4.6 8

1NO
() Positive opening of NC contacts (11-12 / 21-22 / 31-32) with 22 actuator with rigid rod only. Do not operate the 22 actuator with rigid rod at an angle of more than 27°.

Legend
Closed contact | Open contact | Positive opening travel acc. to EN 60947-5-1 | Switch pressed / Switch released

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8 Utilization requirements

FR-FM-FX-FZ-FK series switches with W3 reset for standard applications

Travel diagrams

Contact block Group 1 Group 2 Group 3 Group 4

0 1 6 0 1.5 8 0 2.3 13 0 15° 75°
2
2x(1NO-1NC) R1 R1.5 R2.3 R15°

3 4.5 0 6.9 40°

6 0 1 6 0 1.5 8 2.3 13 0 15° 75°
1NO+1NC R1 R1.5 R2.3 R15°

4.4 6.6 10.113 59°75°

9 0 1 6 0 1.5 8 0 2.3 0 15°
2NC R1 R1.5 R2.3 R15°

0 1 6 0 1.5 8 0 2.3 13 0 15° 75°

10
2NO R1 R 1.5 R 2.3 R 15°

0 1 3 6 1.5 4.5 6.9 0 15° 40° 75°

0 0 2.3
20 8 13
1NO+2NC R1 R1.5 R2.3 R15°

0 1 3 6 0 1.5 4.5 0 2.3 6.9 0 15° 40°

21 8 13 75°
3NC R1 R1.5 R2.3 R15°

0 1 3 6 0 1.5 4.5 0 2.3 6.9 0 15° 40°

22 8 13 75°
2NO+1NC R1 R1.5 R2.3 R15°

3 4.5 6.9 40°

33 0 1 6 0 1.5 8 0 2.3 13 0 15° 75°
1NO+1NC R1 R1.5 R2.3 R15°

3 4.5 6.9 40°

34 0 1 6 0 1.5 8 0 2.3 13 0 15° 75°
2NC R1 R1.5 R2.3 R15°

Legend
Closed contact | Open contact | Positive opening travel acc. to EN 60947-5-1 | Switch pressed / Switch released | R reset engagement travel

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FR-FM-FX-FZ-FK-FW series switches for safety applications

Travel diagrams

Contact block Group 8 Group 9 Group 10 Group 11

0 6.3 9.3 0 11° 31° 347° 0 10° 25° 180° 90° 25° 25°90°
10° 0 10°
5
1NO+1NC
4.6 4° 3° 3° 3°
7.2
6
0 4.7 0 6° 16° 347° 0° 6° 14° 180° 90° 14° 6° 0° 6° 14° 90°
1NO+1NC 7 18° 21° 21° 21°

0 6.6 9.1 0° 15° 25° 347°

7 / /
1NO+1NC 5 7°

90° 23° 0° 23° 90°

9
9 0 6.5 0 6° 16° 347° 0 15° 23° 180°
2NC 15° 15°

0 5.8 8.8
11 / / /
2NC
3.9
0 6
3.5
13 / / /
2NC 6.6 9.1
0 7.3 15°
4.8 0 5° 347°
14 / /
2NC 7 27°
9.5 17°

0 5 7.5 0 6° 16° 347° 0° 5° 13° 180° 90° 13° 5° 0° 5° 13° 90°

18
1NO+1NC 5.8 8° 8° 8° 8°

16° 13°
0 5.3 7.8 0 6° 347° 0 5° 180° 90° 13° 5° 0° 5° 13° 90°
20
1NO+2NC
5.8 9° 8° 8° 8°

21 0 5.3 7.8 0 6° 16° 347° 0 5° 13° 180° 90° 13° 5° 0° 5° 13° 90°

3NC

7.8 16°
0 5.3 0 6° 347° 0 5° 13° 180° 90° 13° 5° 0° 5° 13° 90°
22
2NO+1NC
5.8 9° 8° 8° 8°

33 0 5.3 7.8 0 6° 16° 347° 0 5° 13° 180° 90° 13° 5° 0° 5° 13° 90°

1NO+1NC 5.8 9° 8° 8° 8°

90° 5° 0° 5° 90°
34 0 5.3 7.8 0 6° 16° 347° 0 5° 13° 180°
2NC 13° 13°

0 7.2 9.7
37 / / /
1NO+1NC 4.5

6° 0° 6°
66 0 4.6 7.1 0 7° 17° 347° 0 6° 14° 180°
90° 90°
1NC 14° 14°

Legend
Closed contact | Open contact | Positive opening travel acc. to EN 60947-5-1 | Switch pressed / Switch released

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8 Utilization requirements

FA-NA-NB-NF series modular pre-wired switches

Maximum and minimum actuation speed

Roller lever - Type 1 Roller plunger - Type 2

Vmax Vmin Vmin Vmax Vmin Vmin

ϕ (m/s) (mm/s) (mm/s) ϕ (m/s) (mm/s) (mm/s)
L R L R
15° 2,5 9 15° 1 4 0,04
30° 1,5 8 30° 0,5 2 0,02
0,07
45° 1 7 45° 0,3 1 0,01
60° 0,75 7

Roller lever - Type 3 Plunger - Type 4

Vmax Vmin Vmin Vmax Vmin Vmin

ϕ (m/s) (mm/s) (mm/s) (m/s) (mm/s) (mm/s)
L R L R
15° 1 5 0,05 0,5 1 0,01
30° 0,5 2,5 0,025
45° 0,3 1,5 0,015

Roller plunger - Type 5

Vmax Vmin Vmin

ϕ (m/s) (mm/s) (mm/s)
L R Contact type:

15° 0,3 4 0,04 R = snap action

L = slow action

Screw tightening torques

For NA and NB series:

1 Head screws 0.5 … 0.7 Nm
2 Lever screw 0.8 … 1.2 Nm
1 3 Connector screw 0.3 … 0.6 Nm
4 M4 fixing screws, body 2 … 3 Nm
2

1 For NF series:
1 Head screws 0.3 … 0.4 Nm
2 2 Lever screw
4 0.8 … 1.2 Nm
3 Connector screw 0.2 … 0.3 Nm
4 M4 fixing screws, body 2 … 3 Nm

3 For FA series:
1 Head screws 0.5 … 0.7 Nm
2 Lever screw 0.8 … 1.2 Nm
3 M4 fixing screws, body 2 … 3 Nm
3

NA - NB - NF FA

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NA-NB-NF series modular pre-wired switches
Travel diagrams

Contact block Group 1 Group 2 Group 3 Group 4 Group 5 Group 6

4 5.6 9.6 0 13° 0 20° 50° 75° 0 4.6 11.2 14
0 1.5 5 0 2.1 7 0 3.5 11
B11
1NO+1NC 11°
0.9 1.5 2.5 8° 3.1

4 5.6 9.6 0 13° 0 20° 50° 75° 0 4.6 11.2 14

0 1.5 5 0 2.1 7 0 3.5 11
B02
2NC
0.9 1.5 2.5 8° 11° 3.1
0 1.5 4 5 0 2.1 5.6 7 0 3.5 9.6 11 0 13° 0 20° 50° 75° 0 4.6 11.2 14
B12
1NO+2NC
0.9 1.5 2.5 8° 11° 3.1
0 1.5 4 5 0 2.1 5.6 7 0 3.5 9.6 11 0 13° 0 20° 50° 75° 0 4.6 11.2 14

B22
2NO+2NC
0.9 1.5 2.5 8° 11° 3.1
0 1.4 2.9 5 0 2 4.1 7 0 3.3 7 11 0 18° 38° 75° 0 4.1 8.1 14
G11 /
1NO+1NC 3.1 4.5 7.3 41° 9.5

G02 0 1.4 2.9 5 0 2 4.1 7 0 3.3 7 11 0 12° 0 18° 38° 75° 0 4.1 8.1 14
2NC
0 1.4 2.9 5 0 2 4.1 7 0 3.3 7 11 0 18° 38° 75° 0 4.1 8.1 14
G12 /
1NO+2NC 3.1 4.5 7.3 41° 9.5
0 1.4 2.9 5 0 2 4.1 7 0 3.3 7 11 0 18° 38° 75° 0 4.1 8.1 14
G22 /
2NO+2NC 4.5
3.1 7.3 41° 9.5
0 1.4 2.9 5 0 2 4.1 7 0 3.3 7 11 0 12° 0 18° 38° 75° 0 4.4 8.1 14
H11
1NO+1NC 1 1.4 2.3 7° 10° 2.8
0 1.4 2.9 5 0 2 4.1 7 0 3.3 7 11 0 12° 0 18° 38° 75° 0 4.4 8.1 14
H12
1NO+2NC 1 1.4 2.3 7° 10° 2.8
0 1.4 2.9 5 0 2 4.1 7 0 3.3 7 11 0 12° 0 18° 38° 75° 0 4.4 8.1 14
H22
2NO+2NC 7°
1 1.4 2.3 10° 2.8
0 1.4 2.9 5 0 2 4.1 7 0 3.3 7 11 0 12° 0 18° 38° 75° 0 3.8 8.1 14
L11
1NO+1NC 1.8 2.6 4.2 15° 23° 5.2
0 1.4 2.9 5 0 2 4.1 7 0 3.3 7 11 0 12° 0 18° 38° 75° 0 3.8 8.1 14
L12
1NO+2NC 1.8 2.6 4.2 15° 23° 5.2
0 1.4 2.9 5 0 2 4.1 7 0 3.3 7 11 0 12° 0 18° 38° 75° 0 3.8 8.1 14
L22
2NO+2NC 1.8 15°
2.6 4.2 23° 5.2

4 5.6 9.6 0 13° 0 20° 50° 75° 0 4.6 11.2 14

0 1.5 5 0 2.1 7 0 3.5 11
BA1
1NO+1NC 11°
change-over 0.9 1.5 2.5 8° 3.1

FA series pre-wired switches

Travel diagrams

Contact block Group 1 Group 2 Group 3 Group 4

0 22° 70°
41 0 1.8 5 0 4.2 9.9 0 12°

1NO+1NC 1.1 2.3 4° 8°

0 1.8 4 5 8 9.9 0 13° 52° 70°

45 0 4.2 0 22°

1NO+1NC 1 2 3° 7°

46 0 1.3 2.8 5 0 2.7 5.6 9.9 0 13° 33° 70°

1NO+1NC 3.2 6.8 43°

48 0 1.3 2.8 5 0 2.7 5.6 9.9 0° 7° 0 14° 34° 70°

1NO+1NC 1.8 4 12° 22°

Legend
Closed contact | Open contact | Positive opening travel acc. to EN 60947-5-1 | Switch pressed / Switch released

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8 Utilization requirements

MK series microswitches

Maximum and minimum actuation speed

Plunger - Type 1 Roller plunger - Type 2

Vmax Vmin Vmax Vmin

ϕ
(m/s) (mm/s) (m/s) (mm/s)
0,5 0,05 15° 0,6 0,2
30° 0,3 0,1
45° 0,1 0,05

Lever with direct action (D) - Type 3 Lever with inverted action (R) - Type 4 Lever with direct action, rear (F) - Type 5

Vmax Vmin Vmax Vmin Vmax Vmin

(m/s) (mm/s) (m/s) (mm/s) (m/s) (mm/s)
0,03 x L 0,0166 x L 0,015 x L 0,0083 x L 0,01 x L 0,0047 x L

L
L L

Roller lever with direct action (D) - Type 6 Roller lever with inverted action (R) - Type 7 Roller lever with direct action, rear (F) - Type 8

Vmax Vmin Vmax Vmin Vmax Vmin

ϕ ϕ ϕ
(m/s) (mm/s) (m/s) (mm/s) (m/s) (mm/s)
15° 0,1 x L 0,0664 x L 15° 0,048 x L 0,0332 x L 15° 0,032 x L 0,0188 x L
30° 0,05 x L 0,0332 x L L 30° 0,024 x L 0,0166 x L L 30° 0,016 x L 0,0094 x L L

45° 0,03 x L 0,0166 x L 45° 0,015 x L 0,0083 x L 45° 0,01 x L 0,0047 x L

Tightening torques
1 Head nuts 2 … 3 Nm
2 Head screws 0.3 … 0.4 Nm
3 Terminal screws 0.6 … 0.8 Nm
4 M4 fixing screws, body (insert washer) 0.8 … 1.2 Nm
Attention: A tightening torque higher than 1.2 Nm can cause the breaking of the microswitch.

2
1
3

233 General Catalogue Detection 2019-2020

 8
MS-MF series microswitches

Maximum and minimum actuation speed

Plunger - Type 1 Roller plunger - Type 2

Vmax Vmin Vmax Vmin

ϕ
(m/s) (mm/s) (m/s) (mm/s)
0,5 0,05 15° 0,6 0,2
30° 0,3 0,1
45° 0,1 0,05

Lever with direct action (D) - Type 3

Vmax Vmin
(m/s) (mm/s)
0,03 x L 0,0166 x L

Roller lever with direct action (D) - Type 6 Roller lever with inverted action (R) -Type 7

Vmax Vmin Vmax Vmin

ϕ ϕ
(m/s) (mm/s) (m/s) (mm/s)
15° 0,1 x L 0,0664 x L 15° 0,048 x L 0,0332 x L
30° 0,05 x L 0,0332 x L L 30° 0,024 x L 0,0166 x L L

45° 0,03 x L 0,0166 x L 45° 0,015 x L 0,0083 x L

Tightening torques
1 Head nuts 2 … 3 Nm
2 Head screw 0.3 … 0.4 Nm
3 Terminal screws 0.6 … 0.8 Nm
4 M4 fixing screws, body (insert washer) 0.8 … 1.2 Nm
Attention: A tightening torque higher than 1.2 Nm can cause the breaking of the microswitch.

2
1

General Catalogue Detection 2019-2020 234

8 Utilization requirements

General requirements - Use of the device is limited to function as a control switch.

The device is designed to be installed on industrial machineries. - Observe minimum distances between devices (if provided).
The installation must be performed only by qualified staff - Comply with the tightening torques indicated in this cata-
aware of the regulations in force in the country of installation. logue.
The device must be used exactly as supplied, properly fixed to - Keep the electrical load below the value specified by the
the machine and wired. respective utilization category.
It is not allowed to disassemble the product and use only parts - Disconnect the power before to work on the contacts, also
of the same, the device is designed to be used in its assembly during the wiring.
as supplied. It is prohibited to modify the device, even slightly - Do not paint or varnish the devices.
e.g.: replace parts of it, drill it, lubricate it, clean it with gasoline - Install the product on flat and clean surfaces only.
or gas oil or any aggressive chemical agents. - Do not bend or deform the device during installation.
The protection degree of the device refers to the electrical - Never use the device as support for other machine compo-
contacts only. Carefully evaluate all the polluting agents pres- nents (cable ducts, tubes, etc.)
ent in the application before installing the device, since the IP - For installation on the machine, use the intended bore holes
protection degree refers exclusively to agents such as dust and in the housing. The device must be fixed with screws of ade-
water according to EN 60529. Thus the device may not be suit- quate length and resistance to the expected stress. At least
able for installation in environments with dust in high quantity, two screws (fitted to holes most suitable for the intended
condensation, humidity, steam, corrosive and chemical agents, use) are required to fix the housing to the machine.
flammable or explosive gas, flammable or explosive dust or
- After and during installation, do not pull the electrical cables
other polluting agents.
connected to the device. If excessive tension is applied to the
Some devices are provided with a housing with openings for cables (that is not supported by an appropriate cable gland),
connecting the electrical cables. To guarantee an adequate the contact block of the device may be damaged.
protection degree of the device, the opening that the wiring
- Provided that the device has an electrical connector, always
passes through must be protected against the penetration
switch off the circuit voltage before disconnecting the con-
of harmful materials by means of an appropriate seal. Proper
nector from the switch. The connector is not suitable for
wiring therefore requires the use of cable glands, connectors
separation of electrical loads.
or other devices with IP protection degree that is equal to or
- During wiring comply with the following requirements:
greater than that of the device.
Store the products in their original packaging, in a dry place •฀for terminals (if present), comply with the minimum and
with temperature between -40° C and +70°C maximum cross-sections of the conductors;
Failure to comply with these requirements or incorrect use •฀tighten the electrical terminals (if present) with the torque
during operation can lead to the damage of the device and indicated in this catalogue;
the loss of the function performed by the device itself. This •฀do not introduce polluting agents into the device as: talc,
will result in termination of the warranty on the item and will lubricants for cable sliding, powder separating agents
release the manufacturer from any liability. for multipolar cables, small strands of copper and other
pollutants that could affect the proper functioning of the
device;
Using the devices •฀before closing the device cover (if present) verify the correct
- Before use, check if the national rules provide for further positioning of the gaskets;
requirements in addition to those given here. •฀verify that the electrical cables, wire-end sleeves, cable
- Before installation, make sure the device is not damaged in numbering systems and any other parts do not obstruct the
any part. cover from closing correctly or if pressed between them do
- All devices are designed for actuation by moving parts of not damage or compress the internal contact block;
industrial machines. •฀for devices with integrated cable, the free end of
- Do not use the device as mechanical stop of the actuator. the cable must be properly connected inside a
- Do not apply excessive force to the device once it has reached protected housing. The electrical cable must be
the end of its actuation travel. properly protected from cuts, impacts, abrasion, etc
- Do not exceed the maximum actuation travel. After installation and before commissioning of the machine,
- Avoid contact of the device with corrosive fluids. verify:
- Do not stress the device with bending and torsion. •฀the correct operation of the device and all its parts;
- Do not disassemble or try to repair the device, in case of •฀the correct wiring and tightening of all screws;
defect or fault replace the entire device. •฀the actuating travel of the actuator must be shorter than the
- In case the device is deformed or damaged it must be entirely maximum travel allowed by the device.
replaced. Correct operation cannot be guaranteed when the - After installation, periodically check for correct device opera-
device is deformed or damaged. tion.
- Always attach the following instructions to the manual of the
machine in which the device is installed.
- If specific operating instructions exist for a device (supplied Do not use in following environments:
or downloadable from www.pizzato.com), they must always - Environments where dust and dirt can cover the device and
be included with the machine manual and be available for the by sedimentation stop its correct working.
entire service life of the machine. - Environment where sudden temperature changes cause con-
- These operating instructions must be kept available for con- densation.
sultation at any time and for the whole period of use of the - Environments where coatings of ice may form on the device.
device. - Environments where the application causes knocks or vibra-
Wiring and installation tions that could damage the device.
- Installation must be carried out by qualified staff only. - Environment with presence of explosive or flammable gas

235 General Catalogue Detection 2019-2020

 8
or dust. The current limit does not apply to devices declared
compliant with directive ATEX 2014/34/EU.

Limits of use
- Use the devices following the instructions, complying with
their operation limits and the standards in force.
- The devices have specific application limits (min. and max.
ambient temperature, mechanical endurance, protection
degree, utilisation category, etc.) These limits are met by
the different devices only if considered individually and not
if combined with each other. For further information contact
our technical department.
- The utilization implies knowledge of and compliance with
following standards: EN 60204-1, EN 60947-5-1, ISO 12100,
EN ISO 14119.
- Please contact our technical department for information and
assistance (phone +39.0424.470.930 / fax +39.0424.470.955
/ e-mail tech@pizzato.com) in the following cases:
- Cases not mentioned in the present utilization requirements.
- In nuclear power stations, trains, airplanes, cars, incinerators,
medical devices or any application where the safety of two or
more persons depend on the correct operation of the device.

Additional requirements for safety applications

- Provided that all previous requirements for the devices are
fulfilled, for installations with operator protection function
additional requirements must be observed.
- The utilization implies knowledge of and compliance with fol-
lowing standards: IEC 60204-1, IEC 60947-5-1, ISO 12100,
EN ISO 14119, EN 62061, EN ISO 13849-1, EN ISO 13850.
- The protection fuse (or equivalent device) must be always
connected in series with the NC contacts of the safety cir-
cuit.
- Periodically verify the correct working of the safety devices;
the periodicity of this verification is settled by the machine
manufacturer based on the machine danger degree and it
does not have to be less than one a year.
- After installation and before commissioning of the machine,
verify:
- the correct operation of the device and all its parts;
- the correct wiring and tightening of all screws;
- the actuating travel of the actuator must be shorter than
the maximum travel allowed by the device;
- the actuating travel of the actuator must be greater than
the positive opening travel;
- the actuation system must be able to exert a force that is
greater than the positive opening force.
- Devices with a safety function have a limited service life.
Although still functioning, after 20 years from the date of
manufacture the device must be replaced completely.
- The production date can be derived from the production
batch on the item. Example: A18 FD7-411. The batch's
first letter refers to the month of manufacture (A=January,
B=February, etc.) The second and third letters refer to the
year of manufacture (18 =2018, 19=2019, etc…)

General Catalogue Detection 2019-2020 236

8 Contact blocks

Features
The contact blocks developed by Pizzato Elettrica are the result of more than 30 years of development experience and millions of sold switches.
The range of available contact blocks is one of the most extensive in the world in the sector of position switches.
This chapter introduces to some features of Pizzato Elettrica contact blocks, in order to give the final user a better understanding of the technolo-
gies behind that element simply named “contact”.
We underline that contact blocks are not available for sale (to the public) separately from switches, both because some of them are mechani-
cally connected to the switch and because some technical features may change in accordance with the switch and its function. The following
data is only intended to serve as an aid for the initial selection of the contact block. It is not to be used for determining the characteristics of the
switch that uses this contact block. For example, the use of a contact block with positive opening with a switch with flexible actuator results in
the combination of the two devices not having positive opening.
In this chapter, the properties of the E1 electronic contact block are explained in detail. It is used with position switches with multiple monitoring
tasks that would require extensive effort to realize with electronic sensors. There is no other electronic sensor on the market that can match this
contact unit with respect to precision and repeatability, adjustment of the switching point, operating temperature and price.

1 2

3 4

5 6 7 8 9 10
11

Description Description
Classification of the contact design acc. to EN 60947-5-1:
1 Captive screws 8 X, Y, C, Za, Zb
Contact type: Slow action / snap action / snap action
2 Finger protection 9 with constant pressure
Clamping screw plates for cables with various diam-
3 eters
10 Force on contacts

4 Self-lifting clamping screw plates 11 Positive opening of contacts

Material of the contacts: Silver alloy or gold-plated silver

5 alloy
Contact technology and reliability: Single bridge, double
6 bridge

7 Operating voltages and currents for reliable switching

237 General Catalogue Detection 2019-2020

 8

1 Captive screws
Switches with this characteristic have clamping screws that remain
in place even if completely unscrewed. This feature reduces wiring
time, since the operator does not have to be careful not to unscrew
Terminals with finger
the screws completely and does not risk to lose them by mistake, protection Captive screws
which is very useful in case of wirings in uncomfortable position

2 Finger protection
All terminals in the contact blocks have protection degree IP20 in
accordance with EN 60529, they are therefore protected against
access to dangerous parts with a diameter greater than 12 mm.

3 Clamping screw plates for cables with various diameters 4 Self-lifting clamping screw plates
The clamping screw plates are provided Switches with this feature are equipped with clamping screw plates
with a particular “roofing tile” structure that move up or down by turning the clamping screw; wiring is easier
and are loosely coupled to the clamping and faster as a result.
screw. The design causes connection
wires of different diameter to be pulled
towards the screw when tightening the
screw (see figure), preventing the wires
from escaping towards the outside.

5 Contact material: gold-plated silver alloy

The contact blocks can be supplied with silver electric contacts
with a special gold-plated surface, with total gold thickness of one
micron. This type of treatment can be useful in environments which
are aggressive against silver (very humid or sulphurous atmospheres)
and in case of very small electric loads, usually with low voltages and
supply currents. This thickness of the gold coating permits several
million switching cycles.

General Catalogue Detection 2019-2020 238

8 Contact blocks

6 Contact technology and reliability

Very rarely, an electric contact does not function. A failed switching operation is a
typical consequence of an exceptionally high contact resistance caused by dust,
a thin layer of oxidation or other impurities that could penetrate the switch during
wiring. Thus, the repeated occurrence of faulty switching depends not only on the
sensor type, but also on its environmental conditions and the load that the switch
drives. These effects are more evident with low electrical loads if the electric voltage
cannot penetrate the thin layers of oxide or small grains of dust.
This type of malfunction can normally be tolerated with hand-operated devices,
because repeating the operation is enough to restore the function. This is not the
case with position switches, as severe machine damage could result if the end posi-
tion is not ascertained.
In the following table we refer to two typical contact structures (type A and B) nor-
mally used in the industry and the ones which have been used by Pizzato Elettrica
for several years in most switches: movable contacts with double interruption and
twin bridge (type C).
As you can see from the table below, the last structure (type C) has the same con-
tact resistance (R) as the simple mobile contact (type A), but with a lower failure
probability (fe). Twin bridge

With a failure probability of x for a single switching operation, the failure probability
for type A is fe=x, for type B fe 2·x, whereas for type C it is fe 4·x2
This means that if the probability of a switching failure is x in a given situation, e.g.,
1x10-4, (1 switching failure in 10,000), the result is as follows:

- for type A one failed commutation every 10,000.

- for type B one failed commutation every 5,000.
- for type C one failed commutation every 25,000,000.

Type Diagram Description Contact resistance R Probability of errors fe

A simple mobile contact R=Rc fe=x

mobile contact with double

B R=2·Rc fe=2x-x2
interruption

mobile contact with double

C R= 2·Rc=Rc fe=4x2-4x3+x4
interruption and twin bridge 2

239 General Catalogue Detection 2019-2020

 8

7 Minimum operating voltages and currents for reliable switching

The reliability of an electric contact depends on several factors, whose influence varies depending on the type of load. For high power loads is
necessary for the contact to be able to dissipate the heat generated during switching. For low power loads, instead, it is important that it oxides
and other impurities do not obstruct the passing of the electric signal. As a result, the material chosen for the electric contacts is a compromise
among different and sometimes contrasting needs. In position switches contacts are usually made of a silver that has proved to be suitable
for the switching of loads in the range of approximately 1 kW to 0.1 W. However, at lower loads, the effects of the oxide, which silver naturally
develops upon contact with air, may occur; additionally to be taken into account are possible contaminations or impurities in the contact switch-
ing chamber (for example the talc powder in the cable sheaths that an installer could accidentally insert in the switch may have a similar effect).

It is impossible to define a fix threshold above which the “missing switching phenomenon” does not appear, because there are a lot of mechani-
cal end electric parameters that influence this value. For example, in laboratory environment a good twin bridge electric contact is able to switch
loads in the µW range for dozens of millions of handling operations, without losing signals. However, this does not mean that the same contact
will have the same performance when the switch operates in environments with sudden changes of temperature (condensation) or where few
switching occur (oxidation).

In order to avoid this kind of problem, gold plated contacts are used for very low loads profiting from the non-oxidability of this material. The
gold-plating layer should be thick enough to be mechanically resistant to switching as well as electrically resistant to possible sparks that may
vaporize it. For this reason Pizzato Elettrica uses micron thickness gold plating suitable for millions of working cycles. Thinner gold plating layers
have often a purely aesthetic function and are only suitable to protect the product against oxidation during long time storage.

The minimum current and voltage values recommended by Pizzato Elettrica are shown in the diagram below, that is divided into two areas
defined by a steady power limit. These values identify voltage and current combinations with high commutation reliability in most industrial
fields. The lower voltage and current limits shown in the diagram are typical minimum values for industrial applications. They may also be
reduced in non typical conditions. It is recommended, however, to always evaluate that the signal power to be switched is at least one mag-
nitude order higher than the noise produced in the electric circuit, in particular when circuit cables are long and pass through areas with high
electromagnetic fields and especially for powers lower than 10 mW.

Application field for silver alloy Application field for silver alloy
gold-plated contacts contacts

1000 V Insulation
voltage limit
500 V

100 V
Operating voltage (V)

Thermal
current limit

100 mW 200 mW

10 V

5V
1 mA 10 mA 100 mA 1A 10 A
Operating current (A)

100 mW Suggested limit for general applications with snap action contact blocks with silver alloy
contacts.

200 mW Recommended limit for general applications with slow action contact blocks with silver
alloy contacts.

General Catalogue Detection 2019-2020 240

8 Contact blocks

8 Classification of the contact block acc. to the EN 60947-5-1

Design Figure Symbol Description

X
Double interruption contact
element with two terminals
Y

Change-over contact element with

C single interruption and three terminals

Change-over contact element with

Za double interruption and four terminals.
The contacts have identical polarity

Change-over contact element with

Zb double interruption and four terminals.
Mobile contacts are electrically separated

Electrically separated contacts Requirements and restrictions for Za contacts

The “+“ symbol between two designs (e.g., X+X, Za+Za, X+X+Y, Electrical loads must be connected to the same phase or polarity. The
etc.) represents the combination of simple, electrically separated contacts are not electrically separated. As a result, different voltages
contact blocks. may not be applied to the NC and NO contacts (figures 2 and 3).
The electrically separated contacts allow different voltages to be According to EN 60947-5-1 section K.7.1.4.6.1., the following restric-
applied between the contacts and loads to be connected to different tions apply for positive opening contacts of design Za when used for
polarities (figure 1). safety applications.
When the control switch has form C or form Za change-over contact
elements, only one contact element shall be used (make or break).
In the case of form Zb change-over contact elements, both contacts
may be used.

Contact design Zb Contact design Za

110 VAC
0V 110 VAC 0V 110 VAC 0V
carico
load A load A
carico load A
carico

load B load B load B

0V 24 VDC

figure 1: correct figure 2: correct figure 3: incorrect

241 General Catalogue Detection 2019-2020

 8

9 Contact blocks with different operating principle: slow action and snap action
Contact blocks with slow action: component where the speed of
the contact movement (V1) depends on the speed of the switch
actuation (V). The contact carrier moves at a rate proportional to the
actuation speed.
The slow action contact block is suitable for applications having low
to medium currents and quick actuation movements. It has no dif-
ferential travel.

Contact block with snap action: component where the speed of

the contact movement (V1) doesn’t depend on the speed of the
switch actuation (V). Upon reaching a predetermined point in the
actuation travel, the contact carrier triggers and switches the con-
tacts.
The snap action contact block is suitable for applications having high
currents and/or slow actuation movements. This kind of contact
block has a differential travel.

10 Contact blocks: diagrams of the force on the contacts

The following diagrams show the relationship between of the force exerted on the contacts (F) and the actua-
tion travel to the end position.

Force Force
(F) (F)

NC opening NO closing

0 6 travel (mm) 0 6 travel (mm)

Contact block with slow action

Force Force
(F) (F)
Differential travel
Differential travel

NC opening travel NC opening travel

NC closing travel NC closing travel

0 6 travel (mm) 0 6 travel (mm)

Cut-off point Cut-off point
Reset point Reset point
Contact block with snap action and constant pressure: 5, 11, 12. Contact block with snap action: 2, 3, 17
The pressure on the contacts remains constant as the switching The pressure on the contacts decreases as the switching
point is approached point is approached

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8 Contact blocks
Contact blocks of the FD-FP-FL-FC-FR-FM-FX-FZ-FK-FW-FS series
Wire cross-section Wire Terminals Gold-
Contact Positive Captive
Contact block Contact diagram Linear travel diagram Operation type Contact type stripping with finger plated
design opening min. max. screws
length protection contacts
0 1.3 6
2x Double 1 x 0.5 mm2 2 x 1.5 mm2
2 2x Za+Za snap action no 6 mm no no G
(1NO-1NC) interruption 1 x AWG 20 2 x AWG 16
0.7

0 1.3
1.3 6
Double 1 x 0.5 mm2 2 x 2.5 mm2
3 1NO-1NC Za snap action no interruption 1 x AWG 20 2 x AWG 14
6 mm no no G
0.8
0.8
0 2.2 4 6 Double 1 x 0.5 mm2 2 x 2.5 mm2
5 1NO+1NC Zb snap action yes interruption,
1 x AWG 20 2 x AWG 14
8 mm yes yes G / G1
1.1 twin bridge

0 1.5 3 6 Double 1 x 0.5 mm2 2 x 2.5 mm2

6 1NO+1NC
3.1
Zb slow action yes interruption,
1 x AWG 20 2 x AWG 14
8 mm yes yes G / G1
twin bridge

0 3.1 4.6 6 Double 1 x 0.5 mm2 2 x 2.5 mm2

7 1NO+1NC
1.6
Zb slow action yes interruption,
1 x AWG 20 2 x AWG 14
8 mm yes yes G / G1
twin bridge

8 Double
0 1 4 8.5 1 x 0.5 mm2 2 x 2.5 mm2
8 1NC Y slow action yes interruption,
1 x AWG 20 2 x AWG 14
8 mm yes yes G / G1
S 6.3 twin bridge

4.4 6 Double 1 x 0.5 mm2 2 x 2.5 mm2

0 2.9
9 2NC Y+Y slow action yes interruption,
1 x AWG 20 2 x AWG 14
8 mm yes yes G / G1
twin bridge
0 1.4 6 Double 1 x 0.5 mm2 2 x 2.5 mm2
10 2NO X+X slow action no interruption,
1 x AWG 20 2 x AWG 14
8 mm yes yes G / G1
twin bridge

0 2 4 6 Double 1 x 0.5 mm2 2 x 2.5 mm2

11 2NC Y+Y snap action yes interruption,
1 x AWG 20 2 x AWG 14
8 mm yes yes G / G1
0.6 twin bridge
0 2.9 6 Double 1 x 0.5 mm2 2 x 2.5 mm2
12 2NO X+X snap action no interruption,
1 x AWG 20 2 x AWG 14
8 mm yes yes G / G1
1.5 twin bridge
0 2.3
0.8 6 Double 1 x 0.5 mm2 2 x 2.5 mm2
13 2NC
3
Y+Y slow action yes interruption,
1 x AWG 20 2 x AWG 14
8 mm yes yes G / G1
4.5 twin bridge

0 1.4 2.9 6 Double 1 x 0.5 mm2 2 x 2.5 mm2

14 2NC
3 4.5
Y+Y slow action yes interruption,
1 x AWG 20 2 x AWG 14
8 mm yes yes G / G1
twin bridge
0 1.4 6 Double 1 x 0.5 mm2 2 x 2.5 mm2
15 2NO 3
X+X slow action no interruption,
1 x AWG 20 2 x AWG 14
8 mm yes yes G / G1
twin bridge

75° 0 28° 48° Double 1 x 0.5 mm2 2 x 2.5 mm2

16 2NC
48° 28° 75°
Y+Y slow action yes interruption,
1 x AWG 20 2 x AWG 14
8 mm yes yes G / G1
twin bridge

0 1.5 3 6 Double 1 x 0.5 mm2 2 x 2.5 mm2

18 1NO+1NC
2
Zb slow action yes interruption,
1 x AWG 20 2 x AWG 14
8 mm yes yes G / G1
twin bridge
0 1.5 3 6 Double 1 x 0.34 mm2 2 x 1.5 mm2
20 1NO+2NC Y+Y+X slow action yes interruption,
1 x AWG 22 2 x AWG 16
7 mm yes yes G
2 twin bridge

0 1.5 3 6 Double 1 x 0.34 mm2 2 x 1.5 mm2

21 3NC Y+Y+Y slow action yes interruption,
1 x AWG 22 2 x AWG 16
7 mm yes yes G
twin bridge

0 1.5 3 6 Double 1 x 0.34 mm2 2 x 1.5 mm2

22 2NO+1NC Y+X+X slow action yes interruption,
1 x AWG 22 2 x AWG 16
7 mm yes yes G
2 twin bridge

0 1.5 3 4.5 6 Double 1 x 0.34 mm2 2 x 1.5 mm2

28 1NO+2NC Y+Y+X slow action yes interruption,
1 x AWG 22 2 x AWG 16
7 mm yes yes G
2 5.5 twin bridge

0 1.5 3 6 Double 1 x 0.34 mm2 2 x 1.5 mm2

29 3NC Y+Y+Y slow action yes interruption,
1 x AWG 22 2 x AWG 16
7 mm yes yes G
4.5 5.5 twin bridge

0 1.5 3 6 Double 1 x 0.34 mm2 2 x 1.5 mm2

30 3NC Y+Y+Y slow action yes interruption,
1 x AWG 22 2 x AWG 16
7 mm yes yes G
4.5 5.5 twin bridge

0 1.5 3 6 Double 1 x 0.34 mm2 2 x 1.5 mm2

33 1NO+1NC
2
Zb slow action yes interruption,
1 x AWG 22 2 x AWG 16
7 mm yes yes G
twin bridge

3 Double 1 x 0.34 mm2 2 x 1.5 mm2

0 1.5 6
34 2NC Y+Y slow action yes interruption,
1 x AWG 22 2 x AWG 16
7 mm yes yes G
twin bridge

0 3.4 4.9 Double 1 x 0.5 mm2 2 x 2.5 mm2

37 1NO+1NC
1.5 6
Zb slow action yes interruption,
1 x AWG 20 2 x AWG 14
8 mm yes yes G / G1
twin bridge

Double 1 x 0.5 mm2 2 x 2.5 mm2

0 1.4 2.9 6
66 1NC Y slow action yes interruption,
1 x AWG 20 2 x AWG 14
8 mm yes yes G / G1
twin bridge

Double 1 x 0.5 mm2 2 x 2.5 mm2

0 1.4 6
67 1NO X slow action no interruption,
1 x AWG 20 2 x AWG 14
8 mm yes yes G / G1
twin bridge

0 x 6 1 x 0.5 mm2 1 x 1.5 mm2

E1 1NO-1NC PNP electronic no Electronic
1 x AWG 20 1 x AWG 16
7 mm no no /

Legend: G = gold-plated contacts 1 µm, G1 = gold-plated contacts 2.5 µm

Contact blocks - FG series

Wire cross-section Wire Terminals Gold-
Contact Positive Captive
Contact block Contact diagram Linear travel diagram Operation type Contact type stripping with finger plated
design opening min. max. screws
length protection contacts
Double
interruption, 1 x 0.34 mm2 2 x 1.5 mm2
Contact block with 4 poles and multiple contact designs.
60• See page 107, General Catalogue Safety 2019-2020
Slow action yes twin bridge
1 x AWG 22 2 x AWG 16
7 mm yes yes G
and double
contact point

243 General Catalogue Detection 2019-2020

 8
Contact blocks - NA-NB-NF series
Positive opening Captive Terminals with Gold-plated
Contact block Contact diagram Linear travel diagram Contact design Operation type Contact type
screws finger protection contacts

0 1.5 4 5
B11 1NO+1NC Zb snap action yes Double interruption / / G
0.9
0 1.5 4 5
B02 2NC Y+Y snap action yes Double interruption / / G
0.9
0 1.5 4 5

B12 1NO+2NC X+Y+Y snap action yes Double interruption / / G

0.9
0 1.5 4 5

B22 2NO+2NC X+X+Y+Y snap action yes Double interruption / / G

0.9
0 1.4 2.9 5
G11 1NO+1NC Zb slow action yes Double interruption / / G
3.1

0 1.4 2.9 5
G02 2NC Y+Y slow action yes Double interruption / / G

0 1.4 2.9 5
G12 1NO+2NC X+Y+Y slow action yes Double interruption / / G
3.1
0 1.4 2.9 5
G22 2NO+2NC X+X+Y+Y slow action yes Double interruption / / G
3.1

0 1.4 2.9 5
H11 1NO+1NC Zb slow action yes Double interruption / / G
1

0 1.4 2.9 5
H12 1NO+2NC X+Y+Y slow action yes Double interruption / / G
1
0 1.4 2.9 5
H22 2NO+2NC X+X+Y+Y slow action yes Double interruption / / G
1
0 1.4 2.9 5
L11 1NO+1NC Zb slow action yes Double interruption / / G
1.8

0 1.4 2.9 5
L12 1NO+2NC X+Y+Y slow action yes Double interruption / / G
1.8
0 1.4 2.9 5
L22 2NO+2NC X+X+Y+Y slow action yes Double interruption / / G
1.8

0 1.5 4 5
1NO+1NC
BA1 change-over
C snap action yes Double interruption / / G
0.9

Contact blocks - HP series

Positive Terminals
Contact Contact Operation Captive Gold-plated
Contact block Linear travel diagram Contact type with finger
diagram design type opening screws contacts
protection
0 4° 8° 180°
50C 1NO+1NC Zb snap action yes Double interruption / / G
1.5°
0 4° 8° 180°
50D 2NC Y+Y snap action yes Double interruption / / G
1.5°
0 4° 8° 180°

50F 1NO+2NC X+Y+Y snap action yes Double interruption / / G

1.5°
0 4° 8° 180°

50M 2NO+2NC X+X+Y+Y snap action yes Double interruption / / G

1.5°
0 3° 7° 180°
52C 1NO+1NC Zb slow action yes Double interruption / / G
5°

0 3° 7° 180°
52D 2NC Y+Y slow action yes Double interruption / / G

0 3° 7° 180°
52F 1NO+2NC X+Y+Y slow action yes Double interruption / / G
5°
0 3° 7° 180°
52M 2NO+2NC X+X+Y+Y slow action yes Double interruption / / G
5°
0 3° 7° 180°
53C 1NO+1NC Zb slow action yes Double interruption / / G
1°

0 3° 7° 180°
53F 1NO+2NC X+Y+Y slow action yes Double interruption / / G
1°
0 3° 7° 180°
53M 2NO+2NC X+X+Y+Y slow action yes Double interruption / / G
1°

General Catalogue Detection 2019-2020 244

8 Assembled connectors: dimensions and wiring diagrams

Wiring diagram for assembled connectors

For FD - FL - FM - FZ - FC series with metal housing

Contact block 2 Contact block 5 Contact block 6 Contact block 7 Contact block 9 Contact block 10 Contact block 11 Contact block 12 Contact block 13
2x(1NO-1NC) 1NO+1NC 1NO+1NC 1NO+1NC 2NC 2NO 2NC 2NO 2NC

1 7 1 1 1 1 1 1 1 1

2 6
2 4 2 4 2 4 2 4 2 4 2 4 2 4 2 4

3 5 5 5 5 5 5 5 5 5
4 8 3 3 3 3 3 3 3 3
M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector,
8-pole 5-pole 5-pole 5-pole 5-pole 5-pole 5-pole 5-pole 5-pole
Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no.
NO 3-4 NC 1-2 NC 1-2 NC 1-2 NC 1-2 NO 1-2 NC 1-2 NO 1-2 NC (1°) 1-2
NC 5-6 NO 3-4 NO 3-4 NO 3-4 NC 3-4 NO 3-4 NC 3-4 NO 3-4 NC (2°) 3-4
NC 7-8 ground 5 ground 5 ground 5 ground 5 ground 5 ground 5 ground 5 ground 5
NO 1-2

Contact block 14 Contact block 15 Contact block 16 Contact block 18 Contact block 20 Contact block 21 Contact block 22 Contact block 33 Contact block 34
2NC 2NO 2NC 1NO+1NC 1NO+2NC 3NC 2NO+1NC 1NO+1NC 2NC

1 1 1 1 1 1 7 1 7 1 1
7

2 6 2 6 2 6
2 4 2 4 2 4 2 4 2 4 2 4

5 5 5 5 3 5 3 5 3 5 5 5
3 3 3 3 4 8 4 8 4 8 3 3
M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector,
5-pole 5-pole 5-pole 5-pole 8-pole 8-pole 8-pole 5-pole 5-pole
Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no.
NC (1°) 1-2 NO (1°) 1-2 NC, lever to the right 1-2 NC 1-2 NC 3-4 NC 3-4 NC 3-4 NC 1-2 NC 1-2
NC (2°) 3-4 NO (2°) 3-4 NC, lever to the left 3-4 NO 3-4 NC 5-6 NC 5-6 NO 5-6 NO 3-4 NC 3-4
ground 5 ground 5 ground 5 ground 5 NO 7-8 NC 7-8 NO 7-8 ground 5 ground 5
ground 1 ground 1 ground 1

Contact block 28 Contact block 29 Contact block 30 Contact block E1

1NO+2NC 3NC 3NC PNP

1 7 1 7 1 7 1

2 6 2 6 2 6
2 4

3 5 3 5 3 5 5
4 8 4 8 4 8 3
M12 connector, M12 connector, M12 connector,
M12 connector, 5-pole
8-pole 8-pole 8-pole
Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no.
NC 3-4 NC 3-4 NC 3-4 + 1
NC 5-6 NC 5-6 NC 5-6 - 3
NO 7-8 NC 7-8 NC 7-8 NC 2
ground 1 ground 1 ground 1 NO 4
ground 5

For FS series with technopolymer housing

Contact block 18 Contact block 20 Contact block 21 Contact block 28 Contact block 29 Contact block 30
1NO+1NC 1NO+2NC 3NC 1NO+2NC 3NC 3NC

1 7 1 7 1 7 1 7 1 7 1 7

2 6 2 6 2 6 2 6 2 6 2 6

3 5 3 5 3 5 3 5 3 5 3 5
4 8 4 8 4 8 4 8 4 8 4 8
M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector,
8-pole 8-pole 8-pole 8-pole 8-pole 8-pole
Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no.
A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2
NC 3-4 NC 3-4 NC 3-4 NC 3-4 NC 3-4 NC 3-4
NO 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6
NO 7-8 NC 7-8 NO 7-8 NC 7-8 NC 7-8

245 General Catalogue Detection 2019-2020

 8

Wiring diagram for assembled connectors

For FP - FR - FX - FW series with technopolymer housing

Contact block 2 Contact block 5 Contact block 6 Contact block 7 Contact block 9 Contact block 10 Contact block 11 Contact block 12 Contact block 13
2x(1NO-1NC) 1NO+1NC 1NO+1NC 1NO+1NC 2NC 2NO 2NC 2NO 2NC

1 1 1 1 1 1 1 1 1
7

2 6
2 4 2 4 2 4 2 4 2 4 2 4 2 4 2 4

3 5
4 8 3 3 3 3 3 3 3 3
M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector,
8-pole 4-pole 4-pole 4-pole 4-pole 4-pole 4-pole 4-pole 4-pole
Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no.
NO 3-4 NC 1-2 NC 1-2 NC 1-2 NC 1-2 NO 1-2 NC 1-2 NO 1-2 NC (1°) 1-2
NC 5-6 NO 3-4 NO 3-4 NO 3-4 NC 3-4 NO 3-4 NC 3-4 NO 3-4 NC (2°) 3-4
NC 7-8
NO 1-2

Contact block 14 Contact block 15 Contact block 16 Contact block 18 Contact block 20 Contact block 21 Contact block 22 Contact block 33 Contact block 34
2NC 2NO 2NC 1NO+1NC 1NO+2NC 3NC 2NO+1NC 1NO+1NC 2NC

1 1 1 1 1 7 1 7 1 7 1 1

2 6 2 6 2 6
2 4 2 4 2 4 2 4 2 4 2 4

3 5 3 5 3 5
3 3 3 3 4 8 4 8 4 8 3 3
M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector,
4-pole 4-pole 4-pole 4-pole 8-pole 8-pole 8-pole 4-pole 4-pole
Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no.
NC (1°) 1-2 NO (1°) 1-2 NC, lever to the right 1-2 NC 1-2 NC 3-4 NC 3-4 NC 3-4 NC 1-2 NC 1-2
NC (2°) 3-4 NO (2°) 3-4 NC, lever to the left 3-4 NO 3-4 NC 5-6 NC 5-6 NO 5-6 NO 3-4 NC 3-4
NO 7-8 NC 7-8 NO 7-8

Contact block 28 Contact block 29 Contact block 30 Contact block E1

1NO+2NC 3NC 3NC PNP

1 1 1 1
7 7 7

2 6 2 6 2 6
2 4

3 5 3 5 3 5
4 8 4 8 4 8 3
M12 connector, M12 connector, M12 connector,
M12 connector, 4-pole
8-pole 8-pole 8-pole
Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no.
NC 3-4 NC 3-4 NC 3-4 + 1
NC 5-6 NC 5-6 NC 5-6 - 3
NO 7-8 NC 7-8 NC 7-8 NC 2
NO 4

General Catalogue Detection 2019-2020 246

8 Assembled connectors: dimensions and wiring diagrams

For FG series with metal housing and M23 connector

Contact block Contact block Contact block Contact block Contact block Contact block Contact block Contact block Contact block Contact block
60A 60B 60C 60D 60E 60F 60G 60H 60I 60L
2NO+2NC 1NO+3NC 4NC 1NO+3NC 1NO+3NC 2NO+2NC 4NC 4NC 1NO+3NC 2NO+2NC

M23 connector, M23 connector, M23 connector, M23 connector, M23 connector, M23 connector, M23 connector, M23 connector, M23 connector, M23 connector,
12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole
Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no.
A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2

NC 3-4 NC 3-4 NC 3-4 NO 3-4 NC 3-4 NC 3-4 NC 3-4 NC 3-4 NC 3-4 NC 3-4
NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6
NO 7-8 NC 7-8 NC 7-8 NC 7-8 NC 7-8 NO 7-8 NC 7-8 NC 7-8 NC 7-8 NO 7-8

NO 9-10 NO 9-10 NC 9-10 NC 9-10 NO 9-10 NO 9-10 NC 9-10 NC 9-10 NO 9-10 NO 9-10
ground 11 ground 11 ground 11 ground 11 ground 11 ground 11 ground 11 ground 11 ground 11 ground 11

Contact block Contact block Contact block Contact block Contact block Contact block Contact block Contact block Contact block Contact block
60M 60N 60P 60R 60S 60T 60U 60V 60X 60Y
3NO+1NC 3NO+1NC 4NC 2NO+2NC 2NO+2NC 1NO+3NC 4NC 2NO+2NC 1NO+3NC 2NO+2NC

M23 connector, M23 connector, M23 connector, M23 connector, M23 connector, M23 connector, M23 connector, M23 connector, M23 connector, M23 connector,
12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole
Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no.
A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2

NO 3-4 NO 3-4 NC 3-4 NC 3-4 NC 3-4 NC 3-4 NC 3-4 NC 3-4 NO 3-4 NC 3-4
NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6
NO 7-8 NO 7-8 NC 7-8 NO 7-8 NO 7-8 NC 7-8 NC 7-8 NO 7-8 NC 7-8 NO 7-8
NO 9-10 NO 9-10 NC 9-10 NO 9-10 NO 9-10 NO 9-10 NC 9-10 NO 9-10 NC 9-10 NO 9-10
ground 11 ground 11 ground 11 ground 11 ground 11 ground 11 ground 11 ground 11 ground 11 ground 11

Contact block Contact block Contact block Contact block Contact block Contact block Contact block Contact block Contact block Contact block
61A 61B 61C 61D 61E 61G 61H 61M 61R 61S
1NO+3NC 2NO+2NC 3NO+1NC 3NO+1NC 3NO+1NC 3NO+1NC 2NO+2NC 3NO+1NC 1NO+3NC 3NO+1NC

M23 connector, M23 connector, M23 connector, M23 connector, M23 connector, M23 connector, M23 connector, M23 connector, M23 connector, M23 connector,
12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole
Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no.
A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2

NC 3-4 NC 3-4 NO 3-4 NO 3-4 NO 3-4 NO 3-4 NC 3-4 NO 3-4 NC 3-4 NO 3-4

NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6

NC 7-8 NO 7-8 NO 7-8 NO 7-8 NO 7-8 NO 7-8 NO 7-8 NO 7-8 NC 7-8 NO 7-8

NO 9-10 NO 9-10 NO 9-10 NO 9-10 NO 9-10 NO 9-10 NO 9-10 NO 9-10 NO 9-10 NO 9-10
ground 11 ground 11 ground 11 ground 11 ground 11 ground 11 ground 11 ground 11 ground 11 ground 11

247 General Catalogue Detection 2019-2020

 8

For FG series with metal housing and M12 connector

Contact block Contact block Contact block Contact block Contact block Contact block Contact block Contact block Contact block Contact block
60A 60B 60C 60D 60E 60F 60G 60H 60I 60L
2NO+2NC 1NO+3NC 4NC 1NO+3NC 1NO+3NC 2NO+2NC 4NC 4NC 1NO+3NC 2NO+2NC
10 1 9 10 1 9 10 1 9 10 1 9 10 1 9 10 1 9 10 1 9 10 1 9 10 1 9 10 1 9
8 8 8 8 8 8 8 8 8 8
2 12 2 12 2 12 2 12 2 12 2 12 2 12 2 12 2 12 2 12
7 7 7 7 7 7 7 7 7 7
3 3 3 3 3 3 3 3 3 3
4 6 4 6 4 6 4 6 4 6 4 6 4 6 4 6 4 6 4 6
5 5 5 5 5 5 5 5 5 5
11 11 11 11 11 11 11 11 11 11
M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector,
12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole
Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no.
A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2

NC 3-4 NC 3-4 NC 3-4 NO 3-4 NC 3-4 NC 3-4 NC 3-4 NC 3-4 NC 3-4 NC 3-4
NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6
NO 7-8 NC 7-8 NC 7-8 NC 7-8 NC 7-8 NO 7-8 NC 7-8 NC 7-8 NC 7-8 NO 7-8

NO 9-10 NO 9-10 NC 9-10 NC 9-10 NO 9-10 NO 9-10 NC 9-10 NC 9-10 NO 9-10 NO 9-10

Contact block Contact block Contact block Contact block Contact block Contact block Contact block Contact block Contact block Contact block
60M 60N 60P 60R 60S 60T 60U 60V 60X 60Y
3NO+1NC 3NO+1NC 4NC 2NO+2NC 2NO+2NC 1NO+3NC 4NC 2NO+2NC 1NO+3NC 2NO+2NC
10 1 9 10 1 9 10 1 9 10 1 9 10 1 9 10 1 9 10 1 9 10 1 9 10 1 9 10 1 9
8 8 8 8 8 8 8 8 8 8
2 12 2 12 2 12 2 12 2 12 2 12 2 12 2 12 2 12 2 12
7 7 7 7 7 7 7 7 7 7
3 3 3 3 3 3 3 3 3 3
4 6 4 6 4 6 4 6 4 6 4 6 4 6 4 6 4 6 4 6
5 5 5 5 5 5 5 5 5 5
11 11 11 11 11 11 11 11 11 11
M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector,
12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole
Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no.
A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2

NO 3-4 NO 3-4 NC 3-4 NC 3-4 NC 3-4 NC 3-4 NC 3-4 NC 3-4 NO 3-4 NC 3-4
NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6
NO 7-8 NO 7-8 NC 7-8 NO 7-8 NO 7-8 NC 7-8 NC 7-8 NO 7-8 NC 7-8 NO 7-8
NO 9-10 NO 9-10 NC 9-10 NO 9-10 NO 9-10 NO 9-10 NC 9-10 NO 9-10 NC 9-10 NO 9-10

Contact block Contact block Contact block Contact block Contact block Contact block Contact block Contact block Contact block Contact block
61A 61B 61C 61D 61E 61G 61H 61M 61R 61S
1NO+3NC 2NO+2NC 3NO+1NC 3NO+1NC 3NO+1NC 3NO+1NC 2NO+2NC 3NO+1NC 1NO+3NC 3NO+1NC
10 1 9 10 1 9 10 1 9 10 1 9 10 1 9 10 1 9 10 1 9 10 1 9 10 1 9 10 1 9
8 8 8 8 8 8 8 8 8 8
2 12 2 12 2 12 2 12 2 12 2 12 2 12 2 12 2 12 2 12
7 7 7 7 7 7 7 7 7 7
3 3 3 3 3 3 3 3 3 3
4 6 4 6 4 6 4 6 4 6 4 6 4 6 4 6 4 6 4 6
5 5 5 5 5 5 5 5 5 5
11 11 11 11 11 11 11 11 11 11
M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector, M12 connector,
12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole 12-pole
Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no. Contacts Pin no.
A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2 A1-A2 1-2

NC 3-4 NC 3-4 NO 3-4 NO 3-4 NO 3-4 NO 3-4 NC 3-4 NO 3-4 NC 3-4 NO 3-4

NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6 NC 5-6

NC 7-8 NO 7-8 NO 7-8 NO 7-8 NO 7-8 NO 7-8 NO 7-8 NO 7-8 NC 7-8 NO 7-8

NO 9-10 NO 9-10 NO 9-10 NO 9-10 NO 9-10 NO 9-10 NO 9-10 NO 9-10 NO 9-10 NO 9-10

Note: the wires connected to pins 11 and 12 of the M12 connector can be used to activate the LEDs in FG series configurations with freely connectable LEDs.

General Catalogue Detection 2019-2020 248

12 Technical definitions

Definitions according to the EN 60947-1 and EN 60947-5-1 standards

Control switches Electrically separated contact elements
Devices or operating mechanisms for controlling the operation of Contact elements of the same control switch which are well isolated
equipment, including signalling, interlocking, etc. from each other and therefore can be connected to electric circuits
with different voltages.
Utilization category
Combination of specified requirements related to the conditions in Contact elements with independent action (snap action)
which the switching device fulfils its purpose. Contact element of a manual or automatic device for control circuits
where the motion speed of the contact is substantially independent
Operating cycle from the motion speed of the actuator.
Sequence of two operations, one for opening and one for closing.
Contact elements with dependent action (slow action)
Rated current Ie Contact element of a manual or automatic device for control circuits
This current depends on the rated operating voltage, the rated where the motion speed of the contact depends on the motion speed
frequency, the utilization category and the type of protective of the actuator.
enclosure, if present.
Minimum actuating force
Thermal current Ith Minimum force to be applied to the actuator that will cause all contacts
Maximum current for heating tests on equipment without enclosure, to reach their switched position.
in free air. Its value shall be least to equal to the maximum value of
the rated operational current Ie of the equipment without enclosure, Position switch
in eight-hour duty. Control switch whose controller is actuated by a moving part of the
machine, when this part arrives to a set position.
Electrical endurance
Number of on-load operating cycles, under the conditions defined by Foot switch
the corresponding product standard, which can be carried out without Control switch whose actuator is actuated by exerting force with a
repair or replacement. foot on the pedal.

Mechanical endurance Pre-travel of the actuator

Number of no-load operating cycles (i.e. without current on the main The maximum travel of the actuator which does not cause any travel
contacts), under the conditions defined by the corresponding product of the contact elements.
standard, which can be carried out without repair or replacement of
mechanical parts. Ambient temperature
The air temperature surrounding the complete switching device,
Contact elements under prescribed conditions.
The parts, fixed or movable, conducting or insulating, of a control
switch necessary to close and open one single conducting path of Rated operating voltage Ue
a circuit. Voltage which, combined with the rated operational current Ie,
determinates the application of the equipment and the referred
Single interruption contact elements utilization categories.
Contact element opening or closing the circuit’s conducting path at
one point only. Rated insulation voltage Ui
Reference voltage for the dielectric test voltage and the creepage
Double interruption contact elements distances along surfaces.
Contact element opening or closing the circuit’s conducting path at
two points in series. Rated impulse withstand voltage Uimp
The highest peak value of an impulse voltage, of a prescribed shape
Make-contact elements (normally open) and polarity, which does not cause destructive discharge under the
Contact element closing a circuit’s conducting path when the control specified test conditions.
switch is actuated.
Contact block
Break-contact elements (normally closed) Contact element or contact elements combination which can be
Contact element opening a circuit’s conducting path when the control combined with similar units, operated by a common actuating system
switch is actuated.

Change-over contact elements

Contact element combination including one make-contact element
and one break-contact element.

275 General Catalogue Detection 2019-2020

 12

Markings and quality marks

CE marking TÜV SÜD mark
The CE marking is a mandatory declaration made by the TÜV SÜD is an international authority claiming long-
manufacturer of a product in order to indicate that the prod- standing experience in the certification of operating safety
uct satisfies all requirements foreseen by the directives for electrical, electromechanical and electronic products.
(regulated by the European Community) in terms of safety and qual- In the course of type approval, TÜV SÜD closely inspects
ity. Therefore, it ensures National bodies of the EU countries about the quality throughout all the stages concerning product
the fulfilment of obligations laid down in the agreements. development, from software design and completion, to production
and to the tests conducted according to ISO/IEC standards. The
IMQ mark operating safety certification is obtained voluntarily and has a high
The IMQ (Italian Institute of the Quality Mark) is an asso- technical value, since it not only certifies the electrical safety of the
ciation in Italy (independent third body) whose task is to product, but also its specific operating suitability for use in safety
check and certify the compliance of materials and equip- applications according to the IEC 61508 standard.
ment with safety standards (CEI standards in the electric
and electronic sector). This voluntary conformity certification is a
guarantee of quality, safety and technical value.
EAC mark
The EAC certificate of conformity is a certificate issued by a
Customs Union certification body formed by Russia, Belarus
UL mark and Kazakhstan, with which the conformity of a product is
UL (Underwriters Laboratories Inc.) is an independent certified with the essential safety requirements laid down by one or
non-profit body that tests materials, devices, products, more Technical Regulations (Directives) of the Customs Union.
equipment, constructions, methods and systems with
regard to their risk for human life and goods according
to the standard in force in the United States and Canada. Decisions
made by UL are often recognized by many governing authorities con-
cerning the compliance with local safety regulations. ECOLAB mark
ECOLAB is one of the world's leading providers
of technologies and services for hygiene in food
processing. ECOLAB certifies the compatibility
CCC mark of tested electrical devices in its own laboratories, using disinfectants
The CQC is the organization in the Chinese Popular Repub- and cleaning agents used in the area of food processing worldwide.
lic whose task is to check and certify the low voltage elec-
trical material. This organization issues the product mark
CCC which certifies the passing of electrical/mechanical
conformity tests by products and the compliance of the company
quality system with required standards. To obtain the mark, the Chi-
nese body makes preliminary company visits as well as periodical
check inspections. Position switches cannot be sold in the Chinese
territory without this mark.

International and European Standards

EN 50041: Low voltage switchgear and controlgear for industrial use. Control switches. Position switches 42.5x80 mm. Dimensions and features
EN 50047: Low voltage switchgear and controlgear for industrial use. Control switches. Position switches 30x55 mm. Dimensions and features
EN ISO 14119: Safety of machinery. Interlocking devices associated with guards. Design and selection principles.
EN ISO 12100: Safety of machinery. General design principles. Risk assessment and risk reduction.
EN ISO 13849-1: Safety of machinery. Safety-related parts of control systems. Part 1: General principles for design.
EN ISO 13850: Safety of machinery. Emergency stop devices, functional aspects. Design principles.
EN 61000-6-3 (equivalent to IEC 61000-6-3): Electromagnetic compatibility. Generic emission standard. Part 1:
residential, commercial and light-industrial environments.
EN 61000-6-2 (equivalent to IEC 61000-6-2): Electromagnetic compatibility. Generic immunity standard. Part 2: Industrial environments.
EN ISO 13855: Safety of machinery. Positioning of safeguards with respect to the approach speeds of parts of the human body.
EN 1037: Safety of machinery. Prevention of unexpected start-up.
EN 574: Safety of machinery. Two-hand control devices. Functional aspects. Principles for design.
EN 60947-1 (equivalent to IEC 60947-1): Low-voltage switchgear and controlgear. Part 1: General rules.
EN 60947-5-1 (equivalent to IEC 60947-5-1): Low-voltage switchgear and controlgear. Part 5: Devices for control and operation circuits.
Section 1: Electromechanical control circuit devices.
EN 60947-5-2: Low-voltage switchgear and controlgear. Part 5-2: Control circuit devices and switching elements - Proximity switches
EN 60947-5-3: Low-voltage switchgear and controlgear. Part 5-3: Control circuit devices and switching elements - Requirements for proximity
devices with defined behaviour under fault conditions (PDF)
EN 60204-1 (equivalent to IEC 60204-1): Safety of machinery. Electrical equipment of machines. Part 1: General rules.
EN 60529 (equivalent to IEC 60529): Protection degree of the housings (IP codes).
ISO 20653: Road vehicles-degrees of protection (IP CODE)
EN 62326-1 (equivalent to IEC 62326-1): Printed boards. Part 1: Generic specification
EN 60664-1 (equivalent to IEC 60664-1): Insulation coordination for equipment within low-voltage systems
Part 1: Principles, requirements and tests.
EN 61508 (equivalent to IEC 61508): Functional safety of electrical, electronic and programmable electronic systems for safety applications.
EN 62061 (equivalent to IEC 62061): Safety of machinery - Functional safety of safety-related electrical, electronic and programmable
electronic control systems.
EN 60079-0 (equivalent to IEC 60079-0): Electrical devices for potentially explosive atmospheres. General rules
EN 60079-11 (equivalent to IEC 60079-11): Electrical apparatus for potentially explosive atmospheres. Intrinsic safety “i”
EN 60079-31 (equivalent to IEC 60079-31): Electrical apparatus for potentially explosive atmospheres. Type of protection: “n”.
EN 60079-28 (equivalent to IEC 60079-28): Electrical apparatus for use in the presence of combustible dust. Part 1-1: Construction and
testing
EN 50581: Technical documentation for the evaluation of electrical and electronic products in relation to the restriction of hazardous
substances
BG-GS-ET-15: Prescriptions about how to test switches with forced contact opening to be used in safety applications (German standard).
UL 508: Standards for industrial control equipment. (American standard).
CSA 22-2 No.14: Standards for industrial control equipment. (Canadian standard).

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12 Technical definitions
European directives
2014/35/EU Directive on low-voltage switchgear and controlgear
2006/42/EC Machinery Directive
2014/30/EU Directive on electromagnetic compatibility
2014/34/EU ATEX Directive
2011/65/UE RoHS Directive

Regulatory Organisations
CEI Comitato Elettrotecnico Italiano (IT) NF Normes Françaises (FR)
CSA Canadian Standard Association (CAN) VDE Verband Deutscher Elektrotechniker (DE)
CENELEC European Committee for Electrotechnical Standardisation UNI Ente Nazionale Italiano di Unificazione (IT)
CEN European Committee for Standardisation UL Underwriter’s Laboratories (USA)
IEC International Electrotechnical Commission TÜV Technischer Überwachungs-Verein (DE)

Protection degree of housings for electrical material according to EN 60529

The following table reports the required protection degrees according to the IEC 60529, EN 60529, CEI 70-1 standards.
The protection degrees are indicated by the abbreviation IP and 2 following digits. 2 additional letters can be reported indicating protection
of persons or other features. The first digit shows the degree of protection against penetration of external solid materials. The second digit
identifies instead the protection degree against liquid penetration.

Protection for Protection for Protection for

1st digit Description the machine persons 2nd digit Description the machine

0 Not protected Not protected 0 Not protected

≥ 50 mm
Against access to
Protected against solid Protected against
hazardous parts with
1 objects greater than
50 mm
the back of a hand 1 vertically falling water
drops
(Ø 50 mm)

≥ 12 mm 15°

Protected against solid Against access to Protected against water

2 objects greater than
12 mm
hazardous parts with a
finger (Ø 12 mm)
2 drops falling at max. 15°
angle

60°
Protected against solid Against access to Protected against rain
3 ≥ 2.5 mm objects greater than
2.5 mm
hazardous parts with a
tool (Ø 2.5 mm)
3 drops falling at max. 60°
angle

Protected against solid Against access to

Protected against splash
4 ≥ 1 mm objects greater than
1 mm
hazardous parts with a
wire (Ø 1 mm)
4 water from any direction

Against access to
Protected against water
5 Protected against dust hazardous parts with a
wire (Ø 1 mm)
5 jets from any direction

Protected against
Against access to
Totally protected against powerful water jets
6 dust
hazardous parts with a
wire (Ø 1 mm)
6 from any direction (e.g.
waves)

Protected against
temporary water
7 immersion
(30 minutes at one-
meter depth)

Protected against
8 continuous immersion
in water

277 General Catalogue Detection 2019-2020

 12
Protection degree IP69K according to ISO 20653
30° ISO 20653 envisages a particularly strenuous test. This test simulates the conditions of pressure
washing in industrial environments with water jets having pressure between 80 and 100 bar, flow rate
between 14 and 16 l/min. and a temperature of 80°C.

30
°
A

Test specifications:

30°
Rotation speed (B): 5 ± 1 rpm
Distance from water jet (A): 100 +50/-0 mm
Water flow rate: 15 ± 1 l/min
Water pressure: 9000 ± 1000 kPa
B Water temperature: 80 ± 5 °C
Test duration: 30 s per position

Housing data in accordance with UL (UL 508) and CSA (C22-2 no.14) approvals
The features required for a housing are determined by a specific environmental designation and other features such as the kind of gasket or
the use of solvent materials.
Type Intended use and description

Mainly for indoor utilization, supplied with protection against contact with the internal mechanism and against a limited quantity of
1
falling dirt.
Suitable for both indoor and outdoor use, provided with protection degree against falling rain, water splashes and direct coming water
4X
from a pipe. No damage caused by ice formation on the hosing. Corrosion-resistant.
Indoor utilization, provided with a protection degree against dust, dirt, flying fibres, dripping water and outside condensation of non-
12
corrosive fluids.
Indoor utilization, supplied with a protection degree against gauze, dust penetration, outside condensation and sprinkling of water,
13
oil and non-corrosive fluids.

Pollution degree (of environmental conditions) according to EN 60947-1

According to the EN 60947-1 standard, the pollution degree is a conventional number based on the quantity of conducting hygroscopic dust,
ionized gas or salt, and on the relative humidity and its frequency of occurrence resulting in hygroscopic absorption or condensation of moisture
leading to reduction in dielectric strength and/or surface resistivity. In equipment to be used inside a housing or having an integral enclosure
as part of the device, the pollution degree applies to the inner part of housing. With the purpose of evaluating the air and surface insulation
distances, the following four pollution degrees are defined:
Degree Description

1 No pollution or only dry and non-conductive pollution occurs.

2 Normally, only non-conductive pollution is present. Occasionally some temporary conductivity caused by condensation may occur.

3 Some conductive pollution is present, or some dry non-conductive pollution that becomes conductive because of condensation.

4 Pollution causes persistent conductivity, for instance due to conductive dust or rain or snow.

Where not otherwise specified by the applicable standards for the product, equipment for industrial applications are generally intended for
their use in environment with pollution degree 3. Nevertheless, other degrees can be considered, depending on the micro-environment or on
particular applications.

Use in alternating and direct current of auxiliary devices acc. to EN 60947-5-1

Alternating current use

Utilization
Intended use
category

AC12 Control of resistive loads and solid state loads with insulation by optocouplers.
AC13 Control of solid state loads with transformer isolation
AC14 Control of electromagnetic loads, power ≤ 72 VA
AC15 Control of electromagnetic loads, power ≥ 72 VA
Direct current use
Utilization
Intended use
category

DC12 Control of resistive loads and solid state loads with insulation by optocouplers.
DC13 Control of electromagnetic loads without economy resistors in circuit
DC14 Control of electromagnetic loads with economy resistors in circuit

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