Research and application of new communication and computing technologies allow the modernization of the electric system, which benefits the quality and continuity of the services provided. Added to this, there is a need to make electrical systems safer and more dependable, through the development of new protection methods that consider new functionalities. This modernization enables the protective equipment to adapt to the changes that occur in the electrical system and can be done through automatic adjustments, i.e., without human intervention, which provides less risk of failure and increased security. However, such advances must reconcile with the analog equipment already present in the protection systems, such as fuses. In this sense, this work proposes the study of a self-adaptive recloser for the protection of distribution systems, considering the presence of fuses. For that, an automatic adjustment of the time multiple, aiming at the coordination with the different downstream protection equipment, and an automatic adjustment of the pick-up current, for better sensitivity of the equipment, are proposed. The software used for the implementation and computational simulation was the Power Systems Computer Aided Design – Electro Magnetic Transient Design and Control (PSCAD^TM-EMTDC^TM). The proposed self-adaptive adjustment system was applied in reclosers for phase and earth protection. Furthermore, the fuse switches, which are analog equipment widely used in distribution systems, were modeled. Once the necessary models and routines were structured, studies were performed in the 34-bus and 134-bus distribution test systems, to evaluate and demonstrate the performance of the equipment in question. The flexibility provided by the proposed adjustments, which allow the incorporation of new logics and changes in decision making, resulted in a self-adaptive method with a satisfactory performance against different fault locations, types, and impedances. It also resulted in better coordination between protective devices. The results compared with conventional protection showed a significant performance gain with the self-adaptive system.