Datasheet

485
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
27.6
24 3
1 ... 3
18.8
26.3
19
L1
L
H
 NJO
 NJO


 
±



  

31
2
4
I
31
2
4
I
31
2
4
II
1
2
1
2
3
4
1
2
3
4
Wiring diagram 1 Wiring diagram 2 Wiring diagram 3 Wiring diagram 4 Wiring diagram 5
Stop switch complete, IP 65
Product can differ from the current configuration. Dimensions [mm]
H = Universal terminal 2.0 x 0.5 mm,
L = Solder terminal,
L1 = Solder terminal 2.8 x 0.5 mm
Mounting cut-outs [mm]
Additional Information
• Lens plastic red
• Marking arrows
• If the anti-twist ring is not used the panel thick-
ness increases to 4 mm
Equipment consisting of (schematic overview)
Actuator
Anti-twist ring
Fixing nut
Each Part Number listed below includes all the black
components shown in the 3D-drawing.
Switching system Contacts Switching action Terminal Part No. Wiring diagram Weight
Low-level element 1 NC C Universal 2.0 x 0.5 mm 51-256.026 3 0.100 kg
1 NC + 1 NO C Universal 2.0 x 0.5 mm 51-253.026 5 0.110 kg
2 NC C Universal 2.0 x 0.5 mm 51-252.026 4 0.110 kg
Snap-action switching element 1 NC + 1 NO C Solder 2.8 x 0.5 mm 51-253.022 1 0.110 kg
Solder 51-256.025 1 0.110 kg
2 NC + 2 NO C Solder 51-259.025 2 0.110 kg
Contacts: NC = Normally closed, NO = Normally open
Switching action: C = Maintain
51