Introduction
This circuit contains three overload relays connected in series which provides a very useful protection to the motor.This circuit has many advantages that it reduces voltage and provide the high current tho the motor.
Explanation
The over load relays contains three current coils which provides high current to the motor and lowers the voltage of the motor.In this circuit the overload relays are connected in series,So in case of fault the relays energizes and cutt off the supply.Through which the contactors will be disconnected to the supply and the motor shut downs completely and very quickly.
Circuit Diagram
Uses
This type of circuit is used in ptotection areas and supply delivering areas.
