Schneider Electric QOB-330 Three-Phase Circuit Breaker

Schneider Electric QOB330 is a three-pole miniature circuit breaker in the QOB family, rated for 30 A at 240 V AC with a 10 kA interrupting capacity and designed for bolt-on installation in QOB panelboards. It protects three‑phase 240 V circuits, providing overcurrent protection for all three phases in 3P installations, and uses a bolt-on mounting suitable for Schneider Electric QOB-series panels. The device is intended for commercial and light industrial electrical distributions that require reliable 240 V three‑phase protection and straightforward field replacement. A variant, QOB330SWN, is available for 120/240 V operation with a switch-neutral configuration, maintaining the same 30 A rating and 10 kA interrupting capacity for compatible installations.