What is the maximum size branch breaker that can be installed in an NF panelboard 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:

The standard branch breakers go to 125A in 2 & 3 pole configuration.

For NF panels with a LA/LH main breaker, up to two 250a J Frame sub feed breakers can be mounted with the proper size back box and trim.
Sub-feed circuit breakers CANNOT be be field installed onto NF Panelboards with PowerPacT L main circuit breakers

Released for: Schneider Electric Canada