IBPKD3400N Bus Plug by Eaton, Cutler Hammer, or Westinghouse BUSWAY CIRCUIT BREAKER ENCLOSURE 500 AMP, 277/480V, 3 PHASE, 4 WIRE Make an Offer Send to a Friend Type: IBPKD Amperage: 400A Voltage: 277/480VAC Phase: 3 Wire: 4 Return To Bus Products