Mega Sale Square D QO21001021 – 100A 2 Pole Miniature Circuit Breaker

Engineered for remote tripping, the QO21001021 includes a factory-installed 120/208/240VAC shunt trip mechanism. This allows automated systems to open the 100-amp circuit from a remote location, ideal for emergency stops. The plug-on design fits seamlessly into standard Square D QO load centers and NQ panelboards. It requires three pole spaces total due to the attached shunt trip module. Along with standard protection, it features the Visi-Trip red flag for quick visual status confirmation.