Issue:
What is the maximum amp of a branch breaker that can be installed in a 400A NQ panel in a weatherproof enclosure?

Product Line:
NQ Circuit Breaker panels sold and supported in the USA.

Environment:
Specifications

Cause:
Product Features

Resolution:
Due to heat rise restrictions inside the NEMA 3R enclosure, the maximum branch breaker is a 150A/3P QOB-VH branch. A 150A sub feed breaker is the largest subfeed branch that can be utilized.

Released for: Schneider Electric Canada