WMZH1C20 Circuit Breaker by Eaton, Cutler Hammer or Westinghouse EATON MINIATURE CIRCUIT BREAKER 1 POLE 20 AMPS 277 VAC CAT# WMZH1C20 New Surplus Make an Offer Send to a Friend Voltage: 277 V Poles: 1 Frame Amperage: 20 A Mount: Plug-in WHSE Code: CB25B1 Return To Circuit Breakers