Siemens QA115AFCN NS Arc Fault Circuit Breaker

Siemens QA115AFCN NS Arc Fault Circuit Breaker is a 15-amp, 120-volt, single-pole AFCI with plug-on neutral design, intended to protect residential circuits by detecting and interrupting arc faults. The plug-on neutral configuration eliminates the need for a separate neutral pigtail, and Siemens lists this variant as a 1-pole, 120V, 15A device in its AFCI catalog. It provides a 10 kA interrupting rating, allowing rapid disconnection under fault conditions. Common applications include protecting branch circuits in living areas—such as lighting and receptacle circuits—where AFCI protection is required by electrical codes.