Schneider Electric QOB350VH Three-Phase Circuit Breaker

Schneider Electric’s Square D QOB350VH is a 50-amp, three-pole miniature circuit breaker (MCB) engineered for 120/240 VAC service, delivering a 22 kA short-circuit rating for reliable interruption of fault currents. This bolt-on model sits in the QO/QOB family and provides thermal-magnetic overcurrent protection for three‑phase circuits, making it suitable for use in panelboards and distribution gear that accept QOB breakers. With three poles, it safeguards all conductors in a 3‑phase branch circuit, and the bolt-on mounting ensures a solid, secure connection to the panel’s bus. Intended for commercial and light industrial electrical distributions, the QOB350VH supports loads up to 50 A per leg while offering dependable switching and protection for downstream equipment. As part of Schneider Electric’s QO/QOB line, this device reflects the standard protection and form factor associated with Square D protection devices, designed to perform consistently in protective switching applications.