WMZS2B63 Circuit Breaker by Eaton, Cutler Hammer or Westinghouse EATON MINIATURE CIRCUIT BREAKER 2 POLES 63 AMPS 277/480 VAC TYPE B CAT# WMZS2B63 Make an Offer Send to a Friend Voltage: 277 V Poles: 2 Frame Amperage: 63 A Return To Circuit Breakers