Fast Shipping Square D QOB390-1021 – 90A 3 Pole Miniature Circuit Breaker

Rated for 10kAIC at 240VAC, this 90-amp miniature circuit breaker includes a factory-installed shunt trip accessory. The 120/208/240VAC shunt trip enables remote tripping via a separate control circuit. This three-pole unit mounts into Square D NQ and NQOD panelboards. Due to the added shunt trip module, the breaker requires four panel spaces instead of three. It features a Visi-Trip indicator that clearly shows when the breaker has tripped, alongside standard thermal-magnetic protection.