Specifications:300 Amps, 3 Pole, Bolt-On, Thermal Magnetic Approval ULMfg Status: Obsolete, Residential/Commercial HJ3B300, Thermal magnetic 3 Pole ET-H circuit breaker, Thoroughly rebuilt and tested. 600 VAC at 50/60 HZ, 300 ampere, 3 pole, interrupting rating 65 kiloampere at 240 VAC, 35 kiloampere at 480 VAC, 25 kiloampere at 600 VAC (ul), terminal not included, size 7.5 inch w x 5.44 inch d x 11 inch h, brand, ET trip type lI, Fits older ITE panel boards FC-1. HJ3B300 is Green (Reconditioned).