Siemens QJ23B175H is a three-pole, 175 A molded case circuit breaker (MCCB) from the QJ frame family, rated for 240 V AC. It provides a 42 kA interrupting rating and features a trip-free mechanism, ensuring the device trips on overload even if the handle is held in the ON position. This model uses load-lug terminals for connection and is suitable for low-voltage distribution panels, feeders, motor control centers, and other commercial or light industrial power-distribution applications that require reliable overcurrent protection in a compact, standardized form factor.
