Solution:

MCCB stands for Moulded Case Circuit Breaker. While comparing with the Miniature Circuit Breaker ( MCB ) the rating of an MCCB is higher and is having short circuit and overload protection. This circuit breaker is an electro-mechanical device which guards a circuit from short circuit and over current. They offer short circuit and over current protection for circuits ranges from 63 Amps-3000 Amps. The primary functions of MCCB is to give a means to manually open a circuit, automatically open a circuit under short circuit or overload conditions.