Microcontroller based 3-Phase Electronic Protection Relay is deigned in such a way that the motor starts automatically after time delay 1/3/5 min. The Electronic Protection Relay is equipped with the facilities of indications for timer, OK, SPP, dry run and O/L. The Electronic Protection Relay operates on low voltage and has auto manual facility. The Microcontroller based 3-Phase Electronic Protection Relay offers single phasing protection up to motor terminal.