Datasheet

Pushbutton round, IP65
Equipment consisting of (schematic overview)
Lens Page 653
Actuator
Front bezel set Page 658
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
components from the pages shown.
Dimensions [mm]
A = Solder terminal
B = Plug-in terminal 2.8 mm x 0.5 mm
C = Universal terminal 2.0 mm x 0.5 mm
Product can differ from the current conguration.
Mounting cut-outs [mm]
Actuator, Front dimension Ø 25 mm
Switching action Contacts Terminal Switching system Part No.
Wiring
diagram
Com-
ponent
Layout
Momentary 1 NC / 1 NO Plug-interminal Snap-action switching element 51-151.022F 247 27
1 NC / 1 NO Solderingterminal Snap-action switching element 51-151.0252F 247 27
2 NC / 2 NO Solderingterminal Snap-action switching element 51-152.0252F 251 27
3 NC / 3 NO Solderingterminal Snap-action switching element 51-153.0252F 253 27
4 NC / 4 NO Solderingterminal Snap-action switching element 51-154.0252F 255 27
Maintained 1 NC / 1 NO Plug-interminal Snap-action switching element 51-281.022F 250 27
1 NC / 1 NO Solderingterminal Snap-action switching element 51-281.0252F 250 27
2 NC / 2 NO Solderingterminal Snap-action switching element 51-282.0252F 252 27
3 NC / 3 NO Solderingterminal Snap-action switching element 51-283.0252F 254 27
4 NC / 4 NO Solderingterminal Snap-action switching element 51-284.0252F 256 27
Momentary 2 NO Universal terminal Low-level element 51-451.036F 245 27
2 NC Universal terminal Low-level element 51-452.036F 243 27
1 NC / 1 NO Universal terminal Low-level element 51-453.036F 239 27
1 NO Universal terminal Low-level element 51-455.036F 241 27
1 NC Universal terminal Low-level element 51-456.036F 237 27
Maintained 2 NO Universal terminal Low-level element 51-481.036F 246 27
2 NC Universal terminal Low-level element 51-482.036F 244 27
1 NC / 1 NO Universal terminal Low-level element 51-483.036F 240 27
1 NO Universal terminal Low-level element 51-485.036F 242 27
1 NC Universal terminal Low-level element 51-486.036F 238 27
Contacts: NC = Normally closed, NO = Normally open
Flush design
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L
 NJO
 NJO
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