Frequently asked questions
What is the difference between a QO and QOB breaker?
FA121194
24 May 2022
Issue:
What is the difference between a QO and QOB breaker?
Product Line:
QO and QOB
Resolution:
A QO breaker is plug on mounting and can be used in QO load centers, old NQO and NQOD panelboards, and current NQ panelboards. A QOB breaker uses a bolt on connection to the bus and can be used in old NQOB and NQOD panelboards and current NQ panelboards. Otherwise the breakers are the same.