The Siemens 20 Amp 1-Pole Type QPF2 GFCI Circuit Breaker QF120AP is a heavy-duty electrical device designed for use in residential or commercial electrical panels. With its plug-on mount and plug-in operation method, this circuit breaker is easy to install and provides reliable protection against ground faults. The maximum amperage of 20 A and voltage range of 101-150 V make it suitable for a wide range of applications. Its black color and compact size make it a sleek addition to any electrical panel.