Product Description: The Siemens HQJ23B125H01S01 is a Molded Case Circuit Breaker from the QJ Frame family. This 3-pole breaker has a 240V voltage rating and 125 amp capacity with a 100kA@240V AIC rating. It features Bolt-On connections and Thermal Magnetic protection. The unit includes a 120/240V shunt trip for added functionality.