Datasheet
491
01
02
03
04
10
14
17
18
19
22
31
41
44
51
56
57
61
70
71
82
84
92
95
96
97
99
ST
Raised design
31
2
4
C
31
2
4
B
31
2
4
C
31
2
4
B
Wiring diagram 1 Wiring diagram 2
31
2
4
C
31
2
4
B
31
2
4
C
31
2
4
B
Wiring diagram 3 Wiring diagram 4
Switching system Contacts Switching action Switching angle Key remove Terminal Part No.
Wiring
diagram
Weight
Keylock switch 3 positions, Front dimension Ø 18 mm
Snap-action switching
element
2 NC + 2 NO B - A - B B = 42° / 42° A Solder 2.8 x 0.5 mm 51-374.022D 1 0.025 kg
C - A - B C = 90°, B = 42° A Solder 2.8 x 0.5 mm 51-377.022D 3 0.025 kg
A + C Solder 2.8 x 0.5 mm 51-378.022D 3 0.025 kg
B - A - C B = 42°, C = 90° C + A Solder 2.8 x 0.5 mm 51-376.022D 2 0.025 kg
C - A - C C = 90° / 90° A Solder 2.8 x 0.5 mm 51-371.022D 4 0.025 kg
C + A + C Solder 2.8 x 0.5 mm 51-372.022D 4 0.025 kg
C + C Solder 2.8 x 0.5 mm 51-373.022D 4 0.025 kg
Contacts: NC = Normally closed, NO = Normally open
Switching action: A = Rest, B = Momentary, C = Maintain
51