WMZH3C20 Circuit Breaker by Eaton, Cutler Hammer or Westinghouse EATON MINIATURE CIRCUIT BREAKER 3 POLE 20 AMPS 277 VAC CAT # WMZH3C20 New Surplus Inventory Code: Z+ Make an Offer Send to a Friend Voltage: 277 V Poles: 3 Frame Amperage: 20 A Mount: Plug-in WHSE Code: CB26A4 Return To Circuit Breakers