Siemens QP330 Molded Case Circuit Breaker 3 Pole 30 Amp 240 Volt

Siemens QP330 molded‑case circuit breaker is a three‑pole, 30‑amp protective device for 240 V AC circuits in the QP family, designed for reliable overcurrent protection in residential and light commercial panels. It employs a thermal‑magnetic trip mechanism to respond to overloads and short circuits, and it features Insta‑Wire connections for quick, secure wiring without additional accessories. With a 10 kA interrupting rating at 240 VAC, it can safely interrupt fault currents within typical distribution setups. The unit’s dimensions are 12.8 inches long, 4 inches wide, and 3.4 inches high, enabling compatibility with standard QP back‑mounting and cabinet spacing in Siemens installations. This 3‑pole configuration is suitable for three‑phase circuits, such as feeders to small industrial motors or three‑phase equipment in residential or light commercial environments, where a compact, plug‑in mounting breaker is preferred for straightforward replacement and consistent performance.