FDB3150 Cutler Hammer, Eaton, Westinghouse Molded Case Circuit breaker, 150 Amp, 3 Pole, 3 Phase, Thermal Magnetic Protection, Bolt-On Connection F FRAMEEaton Series C complete molded case circuit breaker, F-frame, FDB, Complete breaker, Fixed thermal, fixed magnetic trip type, Three-pole, 150A, 600 Vac, 250 Vdc, 18 kAIC at 240 Vac, 14 kAIC at 480 Vac, Load side, 50/60 Hz