The Q2125 Siemens Brand New circuit breaker is a black, 125A maximum amperage main breaker suitable for wall mounting. With a Type A tripping characteristic and instantaneous break time, this plug-in electrical connection device has an IP rating of 10 kilo-amp. It features a switch control style and compatible wire gauge ranging from 21-25 AWG. This two-pole, two-throw circuit breaker is ideal for any room and can handle current ratings between 101-150 A.