Siemens Q330 Three-Phase 30 Amp Circuit Breaker

Siemens Q330 is a three-pole, 30-amp molded‑case circuit breaker in the Type QP family, rated for 240 VAC and UL 489-listed for residential and light commercial panel applications. It delivers common-trip protection across all three poles with a thermal-magnetic trip and a 10 kA interrupt rating at 240 V, enabling safe disconnection during short circuits. This plug-in mount device is designed for Siemens QP/MP frames and can be installed in compatible load centers and distribution panels; some configurations support Insta-Wire connections for faster field wiring, with load-lug termination options available on certain variants. The Q330 is intended to protect 240 V circuits and equipment such as motors and compressors in 3-phase installations, providing reliable overcurrent protection and straightforward replacement in Siemens-based panels.