PT. Indocement Tunggal Prakarsa Plant 12 located in Kalimantan requires a reliable electrical system, both in terms of its power supply, in terms of backup of installed electrical systems, as well as safeguards that meet the electricity standards. Contained in this very closely related to the short circuit that occurs, in the short-circuit settlement is not desired then the protection of the current relays more with good coordination and reliable protection is required, the coordination of the protection of the current relay is more necessary in order to occur short circuit occurs in the field no widespread damage occurred in its electricity and existing industrial equipment. To maintain the condition of electric power system in optimum absence, a re-study of the coordination of current relational protection in PT. Indocement Tunggal Prakarsa, Tbk Plant 12. This final project discusses the coordination analysis of overcurrent relay protection at PT. Indocement Tunggal Prakarsa, Tbk. In analyzing the coordination of overcurrent protection then using several methods in a more coordinated way with coordination protection resseting using ETAP software and also resseting coordination protection over current relays using manual calculations. After doing the comparison it can be seen more current relay protection installed in the field there are some that do not work well. It is pronounced in the work of existence. Which does not match the standard ie 0.2 - 0.35 seconds from the IEEE