Schneider Electric QOB350 Molded Case Circuit Breaker

Schneider Electric QOB350 Molded Case Circuit Breaker is a three-pole, 50 A protection device designed for bolt-on installation in compatible QOB/QO panelboards. Rated at 240 V AC with a 10 kA short-circuit interrupting capacity, it provides reliable overcurrent protection for three-phase feeders and branch circuits in commercial and light industrial electrical distributions. As part of the Square D by Schneider Electric QOB family, this molded-case breaker fits standard QOB panelboard assemblies and offers a compact, modular approach to protection that can be swapped or expanded within an existing installation. The QOB350 is available in variants such as QOB3502100, which includes an alarm switch configuration, illustrating the range of options within the line while preserving the core 50 A / 240 V, 3P protection specification. Use cases include service panels, distribution boards, and equipment enclosures that require 3P protection up to 50 A, enabling safe isolation and coordination with other protection devices in the same system.