The Siemens QF120AN NS is a 20-amp, 120-volt, 1-pole GFCI (ground-fault circuit interrupter) miniature circuit breaker with plug-on neutral for quick, tool-free installation. It provides ground-fault protection for residential and light-commercial circuits where protection against shock is required, such as bathrooms, kitchens, and outdoor outlets. The NS suffix indicates the plug-on neutral variant in Siemens' QF120AN family, designed for use in compatible load centers that accept this configuration.
