What is MPCB?

MPCB is basically known as motor protection circuit breaker. And motor protection circuit breaker is a kind of low-voltage circuit breaker. An MPCB works similar to an MCCB, but has electrical features designed in such a way that it efficiently protects the motors against various types of faults. Also, it has an on-off switch to turn on or off the power supply to the motor. It is worth noting that an MCCB can also be used to protect motors, but it has limited motor protection functions compared to MPCB. Some of the other faults that MPCB can protect the motor from are phase loss, current imbalance and under-voltage fault. The MPCB has a special feature of auto-resetting. This allows the motor to resume its function after a certain period of time after the motor has been tripped. The MPCB has adjustable bimetallic strip for overload protection. The strip for overload protection can be adjusted to any two set values. The MPCB can also provide protection against line-to-line faults and line-to-ground faults.