QO Circuit Breakers provide the high level of protection you expect from Square D. When it comes to electrical protection, fast response is critical and QO Circuit Breakers can trip faster than the blink of an eye. This breaker will work only in Square D branded residential panels. Typical applications for a double pole 20 Amp breaker include the electric heater (240V up to 3.75Kw) in a home and requiring a wire size of 12-2.
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