Schneider Electric QOB340 Molded Case Circuit Breaker

Schneider Electric's QOB340 is a 3-pole, 40-amp molded‑case circuit breaker in the Square D QOB bolt‑on family, rated for 120/240 V AC with a 10 kA interrupt rating. Designed for bolt‑on installation in QOB‑series load centers, this 2‑space, 3‑pole device provides thermal‑magnetic overcurrent protection for three‑phase circuits. It is UL‑listed and ANSI‑certified, making it suitable for residential or commercial panel installations that require reliable overcurrent protection in Schneider Electric's QO/QOB ecosystem. With a 40 A rating at 240 V AC and a 10,000 AIC interrupt capability, the QOB340 is a common choice for protecting three‑phase feeders such as motors or compressors in appropriate panel setups.