Square D QOB340-1021 3 Pole Circuit Breaker
The Square D QOB340-1021 is a 3 Pole thermal magnetic molded case circuit breaker with a current rating of 40 Amps and a voltage rating of 120/240VAC, 48VDC. It has an interrupting rating of 10kAIC at 120/240VAC, 5kAIC at 48VDC. The QOB340-1021 has a bolt-on mounting type and includes long time and instantaneous trip functions.