MBH320 Circuit Breaker by Eaton, Cutler Hammer or Westinghouse EATON 3 POLE 20 AMPS TYPE B CURVE 10 KA 240 VAC CAT# MBH320 New Surplus Inventory Code: L Make an Offer Send to a Friend Poles: 3 Frame Amperage: 20 A Mount: Plug-in WHSE Code: CB34D3 Return To Circuit Breakers