Most of electrical equipment’s are more sensitive, and they have to be protected from overvoltage and short circuit occurrence. To ensure protection against overload, slow blow circuit breakers and overload relays are generally used. Thermal magnetic circuit breakers are used to offer protection against both overcurrent and overload. Currently fuse and circuit breakers are employed to safeguard the electrical equipment’s. Miniature circuit breaker is based on thermal bimetal lever trip mechanism. Miniature circuit breaker is slow and the trip time varies according to the Percentage of overload and surrounding temperature. This research paper is objected to enhance automated domestic electrical fault isolation system. The designed automated circuit cut off the power supply whenever overload or short circuit occur and reset after the fault cleared using hardware and embedded system software on microcontroller. The experiment is performed three times setting the voltage at 220Vac at 2.7A, 5A and 8A and the findings are pointed positive results.