Microcontrollers with their inherent advantages are being increasingly used in the industry. With growing shortage and escalating cost of Electrical Energy, accurate monitoring of parameters has become necessary. '1P MOTOR STARTER UNIT’ is used for the same purpose. This instrument is able to monitor basic parameters and accordingly control pump. It protects costly pumps from ‘Unhealthy conditions’ such as over load/under load etc. by automatically cutting off supply to it.