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What is the maximum size branch breaker that can be installed in an NF panel with a 400a main breaker?

Issue:
Branch breakers size to be installed in an NF panel with a 400A main breaker.

Product Line:
Panelboards

Environment:
NF

Cause:
Selection

Resolution:
Up to two 250a J Frame sub/feed/breakers can be mounted with the proper size back box and trim ; factory installed only. The standard branch breakers go to 125a in 2 & 3 pole configuration.

Schneider Electric Canada

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