Motor Protection Circuit Breaker(MPCB) 

A motor protection circuit breaker, or MPCB, is an electromechanical device that performs three important functions upstream of an electric motor: isolation, motor protection against overload and short circuit, control of the motor (on/off).

MPCB's are a specialized type of electrical protection device that is designed specifically for electric motors, like their name implies. Electric motors have plenty of applications and are used to drive mechanical devices of all types, so it is very important to protect them adequately with MPCBs.

The following are just a few examples of devices driven by electric motors in commercial and industrial buildings :

Rooftop air conditioners, chillers, compressors, heat pumps and cooling towers.

Industrial conveyor belts and other machinery used in manufacturing processes.

Extraction and injection fans, as well as air handling units.

Water pumping systems & Elevators and other hoisting devices.

In all of these industrial and commercial applications of electric motors, the MPCB has the key role of providing electrical protection.