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What is the kA rating of 29372 and 32623 Busbar Adapters for Compact NS/NSX<630 Circuit Breaker.

Published date: 04 September 2020

The breaking capacity (KA rating) of the system with the Busbar Adapters 29372 and 32623 connected with Compact NS/NSX<630 remains the as the Circuit Breaker connected. By adding the Busbar Adapters only the nominal current of Circuit Breaker is derated (see below table).

 
Derating Table
For NS 3P In Busbar Adaptor Reference
NS100 100A 29372
NS160 160A 29372
NS250 250A 29372
NS400 400A 32623
NS630 570A 32623

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