Interchangeable Single Pole Circuit Breaker 1 40 Amp, 120/240 Vac Interchangeable Not Interchangeable With Square D Homeline Panels 10,000 Air Switch Indicator Plug-in Fits (gould/ite/siemens)-qp, (crouse Hinds/murray)-mp, General Electric-thql, (sylvania/challenger)-c, Thomas & Betts-tb And (bryant/westinghouse)-br Panels Standard Overload And Short Circuit Protection In Load Centers Ul Classified As Interchangeable Ul Listed C.s.a. Approved Hacr Rated Bulk All items sold new in original packaging