| Standard MCCB, Molded Case Circuit Breakers, are designed for protection circuits, specifically the wiring and devices, from overheating due to overload of the circuit. If a circuit is rated 20 amps, a MCCB breaker will monitor the current and trip if the current rises above 20 amps, with allowances of time.
A MPCB, Motor Protection Circuit Breaker is designed to protect motors. These will serve as short circuit protection of the circuit wiring and overload of the motor. In large industrial installations, this can be a huge cost savings by elimination the separate overloads for each motor.
A motor needs to be more closely protected. Typically the rating is anywhere from 115% to 125% of normal running current. A MPCB will be adjustable to be more closely rated and matched to the motor running current. If a motor is rated to draw 14.2 amps at full load and is allowed to be protected at no more than 125%, a MPCB can be adjusted exactly to 17.75 amps. | 
My question is what is motor protection circuit breakers? ?How it is different from MCB and MCCB's????
Linear Mode
