Siemens QF120A GFCI Circuit Breaker 20A 1 Pole 120V

Siemens QF120A is a 20-amp, single-pole GFCI circuit breaker designed for 120-volt circuits in compatible Siemens load centers; it uses a plug-in mounting and a standard 1-pole footprint that is common in residential panels. This device belongs to Siemens' QF family and is listed as UL Type QPF2, with a 10,000-ampere interrupting rating (AIC) at 120 V, providing rapid disconnection on ground-fault conditions. The 1-pole, 120 V AC unit protects a single hot conductor, delivering a 20 A nominal rating and a thermal-magnetic trip mechanism for reliable protection; its compact design fits the same bus spacing as other QF-series breakers. Ideal for branch circuits requiring GFCI protection in residential or light-commercial installations, the QF120A is widely used as a direct replacement in compatible Siemens panels and is specified by major distributors as a Siemens 20A, 1P GFCI breaker for 120V systems.