Siemens AG Q245 Type QP Plug-In Circuit Breaker

The Siemens Q245 Type QP plug-in circuit breaker is a 2-pole, 45 A protective device designed for 120/240 VAC service, built on the Type QP/Molded Case Circuit Breaker family to fit Siemens panelboards that accept QP-style plug-in breakers, delivering reliable, retrofit-friendly protection in compact spaces. It carries a 10 kA interrupt rating at 240 V (10,000 AIC), providing robust short-circuit protection for branch circuits in residential and light commercial installations, with a thermal-magnetic trip mechanism that reacts to both sustained overloads and short circuits in a standard QP configuration. The unit's dimensions are roughly 3 inches long by 3 inches wide by 2 inches high, it uses plug-in mounting and accepts conductors in the range of 8 AWG to 6 AWG per pole, enabling straightforward wiring in typical Siemens load centers. This Q245 model is widely used for protecting feeders, motors, and multi-wire branch circuits at 120/240 V, and its QP frame compatibility aligns with Siemens panelboards and other enclosures that accept QP-type devices.