Table of contents
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
9
4.8.3.3 Activation ......................................................................................................................................... 311
4.8.3.4 Part number..................................................................................................................................... 311
4.8.4 Locking provision for charging handle for padlocks ............................................................... 312
4.8.4.1 Description ...................................................................................................................................... 312
4.8.4.2 Activation ......................................................................................................................................... 312
4.8.4.3 Article number................................................................................................................................. 312
4.8.5 Cover for the electronic trip unit ................................................................................................. 313
4.8.5.1 Description ...................................................................................................................................... 313
4.8.5.2 Article number................................................................................................................................. 313
4.8.6 Locking provision to prevent unauthorized closing of the withdrawable circuit
breaker ............................................................................................................................................. 314
4.8.6.1 Description ...................................................................................................................................... 314
4.8.6.2 Activation ......................................................................................................................................... 315
4.8.6.3 Part number..................................................................................................................................... 315
4.8.7 Locking provision with padlock for the racking handle of the racking mechanism .......... 316
4.8.7.1 Description ...................................................................................................................................... 316
4.8.7.2 Activation ......................................................................................................................................... 316
4.8.8 Locking provision with safety lock for the racking handle..................................................... 317
4.8.8.1 Description ...................................................................................................................................... 317
4.8.8.2 Activation ......................................................................................................................................... 317
4.8.8.3 Part number..................................................................................................................................... 318
4.8.9 Shutters ............................................................................................................................................ 319
4.8.9.1 Article number................................................................................................................................. 319
4.8.10 Locking provision to prevent opening of the control cabinet door when the circuit
breaker is closed ............................................................................................................................
320
4.8.10.1 Description ...................................................................................................................................... 320
4.8.10.2 Activation / override ...................................................................................................................... 321
4.8.10.3 Article number................................................................................................................................. 321
4.8.11 Locking provision to prevent racking of the withdrawable circuit breaker in the
disconnected position ................................................................................................................... 322
4.8.11.1 Description ...................................................................................................................................... 322
4.8.11.2 Activation ......................................................................................................................................... 323
4.8.11.3 Part number..................................................................................................................................... 323
4.8.12 Locking provision to prevent racking of the withdrawable circuit breaker when the
control cabinet door is open ........................................................................................................ 324
4.8.12.1 Description ...................................................................................................................................... 324
4.8.12.2 Activation ......................................................................................................................................... 324
4.8.12.3 Article number................................................................................................................................. 325
4.8.13 Locking provision to prevent closing of the withdrawable circuit breaker when the
control cabinet door is open ........................................................................................................ 325
4.8.13.1 Description ...................................................................................................................................... 325
4.8.13.2 Activation / override ...................................................................................................................... 326
4.8.13.3 Part number..................................................................................................................................... 326
4.9 Interlocking ...................................................................................................................................... 327
4.9.1 Mechanical interlocking (Bowden cable interlocking) ........................................................... 327
4.9.1.1 Description ...................................................................................................................................... 327
4.9.1.2 Part number..................................................................................................................................... 331
4.9.2 Interlocking of two circuit breakers using a Bowden cable ................................................... 332
4.9.3 Interlocking of three circuit breakers (one of three) using a Bowden cable ..................... 333
4.9.4 Interlocking of three circuit breakers using a Bowden cable ................................................ 334
4.9.5 Interlocking of three circuit breakers, two of which are interlocked, using a Bowden
cable.................................................................................................................................................. 335
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