Motor protection relay

Motor protection relays are used to protect connected motors against overloading. If overloading occurs in any of the three connected phases, a connected switch can be actuated by means of the motor protection relay. In the event of overloading, power supply to the motor is usually interrupted via the its control circuit.

Adjustable parameters

Designation Range Default value
Rated current 0.1 ... 100 A 0.5
Tripping temperature 50 ... 150 °C 80