Eaton's Meter Breakers Combine A Single Meter Socket And A Main Circuit Breakerand/or Loadcenter Into One Enclosure. Certain Utilities Will Specify A Meter Breaker Instead Of A Meter Socket And Loadcenter. The Meter Breaker Is Used Where Electricity Enters A Home Or Dwelling. The Utility Attaches A Meter In The Socketto Measure Power Consumption. The Loadcenter Portion Is Used To Distribute The Power Throughout The Home Using Various Circuits. Eaton Offers A Variety Of Designs To Meet Local Utility Specifications. Ul Listed.