Question: are qo and qob breakers interchangeable?
Answer: QO and QOB Circuit Breakers, Every thing you need to know. ... Essentially plug on QO circuit breakers are exclusively used for QO load centers, OEM mounting bases, and can also be used bolt-on panel types NQOD, NQOB and NQ. While bolt on QOB circuit breakers are utilized for NQOB, NQOD and NQ panel boards only.