Datasheet
457
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
Flush design
36.5 … 59
2
1.5 ... 4
44
41 3
H
L1
L
NJO
NJO
3NBY
Illuminated pushbutton square, 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
• For front dimension 24 x 24 mm
Equipment consisting of (schematic overview)
Lens page 497
Single-LED page 515
Actuator
Front bezel set page 505
Fixing nut
Each Part Number listed below includes all the black
components shown in the 3D-drawing.
To obtain a complete unit, please select the red com-
ponents from the page s shown.
Switching system Contacts Switching action Terminal Part No.
Compo-
nent layout
Wiring
diagram
Weight
Illuminated pushbutton square
Low-level element 1 NC B Universal 2.0 x 0.5 mm 51-456.036F 4 1 0.006 kg
C Universal 2.0 x 0.5 mm 51-486.036F 4 2 0.006 kg
1 NC + 1 NO B Universal 2.0 x 0.5 mm 51-453.036F 4 3 0.006 kg
C Universal 2.0 x 0.5 mm 51-483.036F 4 4 0.006 kg
1 NO B Universal 2.0 x 0.5 mm 51-455.036F 4 5 0.006 kg
C Universal 2.0 x 0.5 mm 51-485.036F 4 6 0.006 kg
2 NC B Universal 2.0 x 0.5 mm 51-452.036F 4 7 0.006 kg
C Universal 2.0 x 0.5 mm 51-482.036F 4 8 0.006 kg
2 NO B Universal 2.0 x 0.5 mm 51-451.036F 4 9 0.006 kg
C Universal 2.0 x 0.5 mm 51-481.036F 4 10 0.006 kg
Snap-action switching
element
1 NC + 1 NO B Solder 2.8 x 0.5 mm 51-151.022F 11 0.007 kg
B Solder 51-151.0252F 12 0.005 kg
C Solder 2.8 x 0.5 mm 51-281.022F 13 0.007 kg
C Solder 51-281.0252F 14 0.005 kg
2 NC + 2 NO B Solder 51-152.0252F 15 0.008 kg
C Solder 51-282.0252F 16 0.008 kg
3 NC + 3 NO B Solder 51-153.0252F 17 0.010 kg
C Solder 51-283.0252F 18 0.010 kg
4 NC + 4 NO B Solder 51-154.0252F 19 0.012 kg
C Solder 51-284.0252F 20 0.012 kg
Contacts: NC = Normally closed, NO = Normally open
Switching action: B = Momentary, C = Maintain
The component layouts you will find from page 520
51