Schneider Electric QOB330 Bolt-On Circuit Breaker

Schneider Electric’s QOB330 is a three‑pole miniature circuit breaker rated for 30 A, designed for bolt‑on installation in QOB‑series panelboards. It protects 120/240 VAC circuits with a 10 kA interrupt rating, providing reliable overload and short‑circuit protection for three‑phase feeders in electrical distribution systems. The unit is compatible with QOB bolt‑on panelboards and load centers that accept QOB breakers, enabling straightforward replacement in compatible installations. Operating at 120/240 VAC and delivering up to 10 kA interrupt capacity, the QOB330 enables safe, quick fault isolation for three‑phase circuits.