Accessories 
  4.7 Conversion kit for withdrawable circuit breakers and rating coding of the guide frame 
3WA1 air circuit breaker 
Equipment Manual, 02/2023, 92310000002-06 
301 
4.7  Conversion kit for withdrawable circuit breakers and rating 
coding of the guide frame 
4.7.1  Conversion kit for converting fixed-mounted circuit breakers/non-
automatic circuit breakers into withdrawable circuit breakers 
4.7.1.1  Description 
 
The conversion kit can be used for converting fixed-mounted circuit breakers into 
withdrawable circuit breakers.  
The conversion is performed on site by the customer. 
The conversion kit which must be ordered for this purpose comprises: 
•  Complete racking mechanism 
•  Racking shaft 
•  Control gate 
•  Shorter circuit breaker feet for withdrawable circuit breakers 
•  Coding pins for withdrawable breaker and guide frame for rated-current coding 
 
WARNING 
Overheating and fire hazard as a result of missing rated-current coding. 
An incorrect combination of guide frame and circuit breaker in the guide frame can 
result in a lack of contact at the blade contacts, leading to overheating and fire hazard. 
Rated-current coding must be installed to ensure that only withdrawable circuit 
breakers with the appropriate blade contacts can be used in the guide frames.