BA1020B Circuit Breaker by Eaton, Cutler Hammer or Westinghouse WESTINGHOUSE CIRCUIT BREAKER TYPE BA 1 POLE 20 AMPS 277 VAC CAT# BA1020B STYLE# 4979D99G04 Make an Offer Send to a Friend Type: BA Voltage: 277 V Poles: 1 Frame Amperage: 20 A Mount: Bolt-in Closing Mech.: Manual Return To Circuit Breakers