Product Description: The Siemens HHLXD63B350 is a Molded Case Circuit Breaker from the Sentron Series family. It features a 3-pole design with a 600 Volt and 350 amp rating, plus a 100kA@480V AIC rating. This breaker uses a Bolt-On connection and includes Thermal Magnetic protection. Note that lugs are not included with this item.