Technical FAQs

Ask a Question

What is the largest branch breaker available in the 400A NQ panel in a NEMA 3R enclosure?

Issue:
What is the largest branch breaker available in the 400A NQ panel in a NEMA 3R 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. .


CTA-ID : 2048854
Was this helpful?
What can we do to improve the information ?