Schneider Electric QOB330VH Bolt On Circuit Breaker

Schneider Electric’s Square D QOB330VH is a three‑pole, bolt‑on mini circuit breaker rated for 30 A at 240 V, designed for use in compatible QO bolt‑on panel installations and built to interrupt fault currents quickly in three‑phase circuits. As part of the QOB bolt‑on family, it provides thermal‑magnetic overcurrent protection with an interrupt rating of 22 kA at 240 VAC, and its bolt‑on mounting simplifies replacement in panels that accept QOB devices, avoiding the need for plug‑on adapters. Termination accepts 14–8 AWG aluminum or copper conductors, and the unit typically occupies two spaces within a standard panel, reinforcing its role as a compact, high‑current protective device for 3‑phase equipment such as motors, conveyors, or HVAC equipment fed from 240 V circuits. This model is widely stocked by electrical distributors and is supported by Schneider Electric’s documentation for QO/QOB breakers, ensuring compatibility with legacy QO/NQ panel systems and a consistent replacement path when upgrading or maintaining industrial distribution panels.