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    What is the difference between a QO and QOB breaker?

    Issue:

    What is the difference between a QO and QOB breaker?

    Product Line:

    QO and QOB

    Environment:
    Electrical Distribution Systems

    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.

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