Siemens Q120DF is a 1-pole, 120-volt, 20-amp dual-function AFCI/GFCI circuit breaker designed for residential load centers, delivering combined arc-fault and ground-fault protection in a single plug-in device. It is UL Type QFGA2 and provides a 10 kA interrupt rating for fast fault clearance, with plug-in mounting compatible with Siemens load centers. Siemens notes these dual-function breakers include self-testing AFCI and GFCI protection to help maintain safety without manual testing. It's intended for typical residential circuits that require both AFCI and GFCI protection.
