Siemens QJ23B150H Molded Case Circuit Breaker

Siemens QJ23B150H is a three‑pole molded‑case circuit breaker designed for 240 V systems with a rated current of 150 A, part of the QJ frame family. It provides thermal‑magnetic overload protection with distinct long‑time and instantaneous trip functions and is offered in a bolt‑on configuration with load‑side lug terminals for straightforward panel installation. The unit carries a 42 kA short‑circuit rating at 240 V, enabling it to interrupt high fault currents in many distribution panels without replacement. It ships with the S01QJOR3 shunt‑trip accessory for remote tripping, a capability commonly used in safety‑critical control circuits and protective schemes. Suitable for protecting three‑phase feeders in commercial and light‑industrial power distributions, motor control centers, and machine panels, the QJ23B150H delivers reliable protection against both overloads and short circuits while accommodating remote‑trip functionality when required. With its compact Siemens MCCB construction and bolt‑on mounting, it remains a robust, maintenance‑friendly solution for 150 A at 240 V in demanding electrical installations.