Siemens Q330 3-Phase 30A Plug-In Circuit Breaker

Siemens Q330 is a 3-pole, 30-amp, 240-volt plug‑in circuit breaker in the QP family, designed to snap into Siemens load centers and meter combos without bolts for fast, reliable installation. It provides common‑trip protection across all three phases for 3‑phase circuits and uses a thermal‑magnetic mechanism on the QP frame, suitable for protecting feeders and motor loads in residential and light commercial distribution. Rated at 240 VAC with a 10 kA interrupt rating (10,000 AIC), the Q330 offers robust short‑circuit protection and UL listing for use on 3‑phase grounded “B” systems. The unit supports plug‑in mounting and is available in configurations that include a load lug terminal option for compatible panels, aligning with Siemens’ standard panel compatibility. MFG part number Q330, this breaker is referenced across Siemens documentation and major retailers as a 30 A, 3‑pole plug‑in solution designed to fit Siemens load centers and meter combinations.