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Square D QOU120 1 Pole Circuit Breaker The Square D QOU120 is a 1 Pole thermal magnetic molded case circuit breaker with a current rating of 20 Amps and a voltage rating of 120/240VAC, 48VDC. It has an interrupting rating of 10kAIC at 120V. The QOU120 has a bolt-on connection type and includes long time and instantaneous trip functions.

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