The Eaton 5103A57G02 End Cap Keeper Nut Kit for L Breakers is a replacement hardware set designed to secure the end-cap keeper nut on Eaton L-type circuit breakers. This kit is the metric version, identified as KPEK4 (KPEKM4). The part number 5103A57G02 specifies the L Breaker end-cap keeper nut kit in Eaton’s accessory lineup.
