Square D By Schneider Electric QOB3100 Circuit Breaker

Square D by Schneider Electric QOB3100 is a 100 A, three-pole miniature circuit breaker designed for 240 V AC distribution, intended for bolt-on installation in compatible Square D panels that accept QOB devices. It provides up to 10 kA interrupting capacity, enabling rapid disconnection of fault currents on three-phase circuits. As a member of the QOB family, the QOB3100 is a three-pole unit that protects three conductors within a single slot footprint and is typically used for three-phase feeders in commercial or industrial electrical systems. This model is a standard replacement within the QOB3100 line and is commonly stocked by distributors to support service or upgrade work in panels that accommodate Square D QOB breakers. Manufactured by Square D (a brand of Schneider Electric), the QOB3100 combines a bolt-on mounting format with a proven form factor to simplify installation and ensure compatible integration with other Square D components in 240 V three-phase distribution schemes.