Schneider Electric QO3100VH Circuit Breaker

Schneider Electric's Square D QO3100VH is a three-pole, 100-amp miniature circuit breaker intended for 120/240 V AC service, offering a 22 kA interrupting capacity to rapidly interrupt fault currents and protect branch circuits in commercial and light industrial installations that use the Square D QO family. It accepts copper or aluminum conductors in the 4 AWG to 2/0 AWG range and uses box lug terminals compatible with standard QO mounting hardware, enabling clean, secure terminations and straightforward integration into existing panelboards. As part of the QO series, the 3P 100A unit is a common choice for protecting feeders and multi-circuit runs in distributed electrical systems, and Schneider Electric literature references QO-VH configurations for back-fed main breakers in compatible panels. A bolt-on alternative is available under model QOB3100VH for installations requiring bolt-on mounting, illustrating the product family’s flexibility while preserving the same electrical ratings and protective function.