What is one of the main purposes of system protection devices like reclosers?

System protection devices, such as reclosers, play a critical role in maintaining the reliability and safety of electrical distribution systems. Their main purpose is to isolate faulted sections of the power system. When a fault, such as a short circuit, occurs, reclosers detect the abnormal conditions and automatically disconnect the affected segment of the grid. This isolation prevents further damage to infrastructure, reduces the risk of widespread outages, and allows for safer maintenance activities.

By isolating the fault, reclosers can help to restore service to unaffected areas more quickly, minimizing the impact on consumers and improving overall system resilience. This capability is essential for efficient fault management in electrical distribution networks, making it clear why this option is recognized as the main purpose of such devices. The other options, while important in their own contexts, do not directly relate to the primary function of reclosers in system protection.