HKD3400F with KT3400T Trip Unit HKD3400 Mod. Code Circuit Breaker HKD, 3 Pole, 400 Amp with KT3400T Trip Unit HKD3400 Mod. Code, Molded Case Circuit Breaker from Eaton, Cutler-Hammer or Westinghouse Make an Offer Send to a Friend Type: HKD Voltage: 600 V Poles: 3 Frame Amperage: 400 A Return To Circuit Breakers