MCCB is an abbreviation for Molded Case Circuit Breakers. It is a common form of electrical protection device which is employed when the load current is significantly higher than the limit of a miniature circuit breaker. The MCCB provides safety against overload, short circuit faults, and is even used for switching the circuits. It can be employed for higher current ratings as well as fault level even in the case of some domestic applications. The wide current ratings and high breaking capacity in MCCB indicate that they are extremely useful even for industrial purposes.