Siemens - 20 amps Dual Function Single Pole Circuit Breaker

Siemens’ 20‑amp dual‑function single‑pole circuit breaker (model Q120DF / Q120DFP or Q120DFN, Q series) is a single‑pole molded‑case breaker that combines arc‑fault (AFCI) and ground‑fault (GFCI) protection in one device, typically used for kitchen and laundry circuit codes. It protects against both parallel and series arc faults as well as Class‑A 5 mA ground faults on 120 V branch circuits, with 10 kAIC interrupting rating.