Product Description: The Siemens CFD63B175 is a Molded Case Circuit Breaker from the Sentron Series. It features a 3-pole design with a 600V, 175A rating and a 200kA@480V AIC rating. This breaker uses a Bolt-On connection and includes Thermal Magnetic protection. It supports wire sizes from 6 AWG to 350 KCM (CU) and 4 AWG to 350 KCM (AL).