This degree project describes a selection methodology IED devices for applying electrical protections in distribution systems. To do this, we first did a detail study and a state of the art of the different methods used for the detection of faults in transmission and distribution systems was performed. Among these international standards, there was a paper that mentioned the different methods and explains them according to the needs and requirements of each. With this, we did a better understanding of fault detection algorithm developed in projects at the University of the Andes. Following this, a review of seven manufacturers catalogs, where the IED device most commonly used for feeder protection of distribution systems each was selected was performed. With this, it was possible to make a detailed comparison between devices, using an array previously prepared using different features needed in applications of advanced distribution automation systems, and their electrical protection. To validate the selection criteria, we used a test table that was compound for two existing relays in the laboratories of the university. First, we raised a real scenario where was implement failures to validate protections , in which actual parameters are set to occur. With this, it was possible to perform different hardware in the loop simulations, whose objective is to empirically compare the devices commonly used in industry, obtaining necessary for drawing conclusions feedback.