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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.

    Square D Picture
    Square D™ QO™ and QOB Miniature Circuit Breakers
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    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.

          • Best price
            QO110 Picture

            QO110

            QO Mini CB, 10A, 1P, 120/240V, 10kA, Plug-in Mount

            29.10 USD
          • Best price
            QO3101201 Picture

            QO3101201

            QO Mini CB 10 A 3P 120/240 V 10 kA Plug-in Mount Aux Switch 1B

            380.00 USD
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            QO1101021 Picture

            QO1101021

            QO Mini CB 10A 1P 120/240 V 10 kA Plug-in Mount Shunt Trip

            218.00 USD
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            QO1101042 Picture

            QO1101042

            QO Mini CB 10 A 1P 120/240 V 10 kA Plug-in Mount Shunt Trip

            218.00 USD
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            QO1101200 Picture

            QO1101200

            QO Mini CB 10 A 1P 120/240 V 10 kA Plug-in Mount Aux Switch 1A

            161.00 USD
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            QO1101201 Picture

            QO1101201

            QO Mini CB 10 A 1P 120/240 V 10 kA Plug-in Mount Aux Switch 1B

            161.00 USD
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            QO1102100 Picture

            QO1102100

            QO Mini CB, 10A, 1P, 120/240V, 10kA, Plug-in Mount, Alarm Switch

            161.00 USD
          • Best price
            QO115 Picture

            QO115

            QO Mini CB 15 A 1P 120/240 V 10 kA Plug-in Mount

            29.10 USD
          • Best price
            QO1151021 Picture

            QO1151021

            QO Mini CB 15 A 1P 120/240 V 10 kA Plug-in Mount Shunt Trip

            218.00 USD
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            QO1151042 Picture

            QO1151042

            QO Mini CB 15 A 1P 120/240 V 10 kA Plug-in Mount Shunt Trip

            218.00 USD