Secure Checkout Square D QOB31001021 – 100A 3 Pole Miniature Circuit Breaker

Built for heavy-duty three-phase loads, this 100A device integrates a 120/208/240VAC shunt trip for automated or remote shutoff requirements. It bolts into Square D NQ and NQOD panelboards, ensuring a rigid connection that withstands industrial vibrations. The unit provides reliable 10kAIC thermal-magnetic protection and features the Visi-Trip window to simplify maintenance checks.