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    Square D™ QO™ and QOB Miniature Circuit Breakers

    QO(B) miniature circuit breakers for QO systems

    QO(B) circuit breakers come in plug-on or bolt-on options and a complete range of amperages and interrupting ranges to fit into various QO distribution panels. QO is the “World’s Finest” Industry leading offer since 1955, with features engineered for faster installation, reliability and quality.

    Schneider Eletric Square D Picture
    Square D™ QO™ and QOB Miniature Circuit Breakers

    Square D™ QO™ and QOB Miniature Circuit Breakers

        • Safety information for products QO115 & QO120:

          Standard thermal-magnetic QO and Homeline 15 and 20 Amp circuit breakers are Listed to UL489 and provide overload and short circuit protection for conductorsThe QO and Homeline thermal-magnetic circuit breakers are for general use in protecting branch circuit in residential and commercial applications. Use QO and Homeline 15 and 20A arc fault circuit interrupter circuit breakers that have been Listed to UL1699 in order to provide arc fault circuit protection for the entire branch circuit in accordance with the installation requirements in National Electrical Code Section 210.12.Thermal-magnetic circuit breakers are not designed, Listed, or intended to provide protection against low level hazardous arcing conditions in branch circuit wiring.