Square D QOB330SWN Molded Case Circuit Breaker

Square D QOB330SWN is a 3-pole, 30-amp molded‑case circuit breaker with a switch‑neutral configuration, designed for 120/240 V systems and bolt‑on mounting. This device is part of the Square D QOB series from Schneider Electric and delivers a thermal‑magnetic trip with an interrupt rating of 10 kA at 240 V, making it suitable for protecting three‑phase feeders in commercial or industrial panels. Terminations are compatible with typical 14–8 AWG conductors, supporting straightforward field wiring in standard QOB bolt‑on bases. The 3P design provides simultaneous protection for three phase conductors, commonly used for branch circuits and feeders in lighting, motor, or equipment applications within distribution gear that require a with switch neutral (SWN) configuration. In short, the QOB330SWN offers reliable overcurrent protection for 30 A loads on 120/240 V systems in bolt‑on installations, with a 10 kA at 240 V interrupt rating and a switch‑neutral feature for convenient panel integration.