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Does the N400M NF panel 400a main breaker adapter kit use an LAL type breaker or a LAP type?

What main breaker does the N400M main breaker adaptor kit in an NF panelboard accept?

Product Line:
NF circuit breaker panelboards and accessories


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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