Siemens QJH23B225 is a three-pole molded-case circuit breaker in the QJ frame, rated for 225 A at 240 VAC, providing protection for three-phase circuits. It delivers a 22 kA short-circuit interrupting capacity at 240 VAC, enabling protection for medium-sized motor and distribution panels. The unit uses a thermal-magnetic trip mechanism with long-time and instantaneous protection, and it supports bolt-on mounting with load-side lug terminal options. In practical use, it’s employed in motor control centers, machine panels, and industrial power distribution where 225 A protection is required.
