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Does the N400M NF panel 400a main breaker adapter kit use an LAL type breaker or a LAP type?
Issue:
Main breaker accepted by the N400M MB adaptor kit in an NF Panelboard

Product Line:
NF circuit breaker panelboards and accessories

Environment:
Application/selection

Resolution:
The load side lugs must be removed from the LAL breaker or just use the LAP breaker.
NOTE: The breaker must be ordered with the MB suffix to obtain the shorter handle. Otherwise, there is  a chance the main breaker handle might hit the panel door when it is closed.

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