Siemens QA120AFC U 1 Pole Arc Fault Circuit Breaker

Siemens QA120AFC is a 1-pole, 20-amp arc-fault circuit interrupter (AFCI) breaker for 120-volt residential circuits, delivering arc-fault protection in a single-pole plug-on unit. This combination-type AFCI provides arc-fault detection along with standard overcurrent protection and is designed for use in compatible Siemens load centers that accept QA-series breakers. The device carries a 10,000-amp interrupting rating at 120V AC (10 kA), enabling rapid disconnection in fault conditions. As a 1P, 120V device, QA120AFC protects individual branch circuits that feed outlets and lighting in homes, helping safeguard 120V circuits without additional downstream components in compatible installations.