Siemens - 20 amps Standard Single Pole Circuit Breaker

Siemens Type QD circuit breakers are UL classified for use in specific Square D load centers in place of Square D QO circuit breakers (see listing on back).For easy reference, a panelboard compatibility list is provided with each circuit breaker. All QD breakers are supplied with load side connectors suitable for 60/75C wire and are calibrated for 40C maximum ambient applications.

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.

Siemens Q23020CT2NC 30/20 Amp 2-Pole Standard tandem breakers (30A outer poles, 20A inner) deliver thermal-magnetic protection for 240V circuits in Siemens load centers at 10kAIC, with common trip for reliable overload/short-circuit safeguarding. Quadplex design saves space in 2-inch slots using plug-in lugs for #14-6 AWG Cu/Al wire, ideal for residential appliances or subfeeds per UL standards.