MCB (Miniature Circuit Breaker)

1. MCBs are used for protection against overload and short circuits in circuits with low current ratings.
2. MCBs are generally used in residential and commercial applications.
3. MCBs are cheaper than MCCBs and have a lower breaking capacity.
4. MCBs are usually manually operated and do not have adjustable trip settings.

MCCB (Molded Case Circuit Breaker)

1. MCCBs are used for protection against overload and short circuits in circuits with higher current ratings.
2. MCCBs are generally used in industrial applications.
3. MCCBs are more expensive than MCBs and have a higher breaking capacity.
4. MCCBs are usually electronically operated and have adjustable trip settings.

MCB stands for "miniature circuit breaker," while MCCB stands for "molded case circuit breaker." MCBs are smaller, lower-capacity circuit breakers that are used for electrical protection in home or office settings. MCCBs are larger, higher-capacity circuit breakers that are used in industrial and commercial settings. Both types of circuit breakers are designed to protect electrical circuits from overload and short circuits, but MCCBs are capable of handling higher currents and can be used in more demanding applications.

The main differences between MCBs and MCCBs are size, capacity, and application. MCBs are smaller and have a lower capacity than MCCBs, so they're typically used in smaller-scale settings. MCCBs are larger and can handle higher currents, so they're typically used in larger-scale settings. MCBs are more common in home and office settings, while MCCBs are more common in industrial and commercial settings. Additionally, MCCBs are typically more expensive and have more features than MCBs.

An MCB is an automatic electrical switch designed to prevent damage to an electric circuit due to excessive current having a current rating from 6 A to 125 A, a short circuit time is about 3 ms, interrupting current rating up to 1800 A, trip characteristics is normally non-adjustable, has a fixed tripping circuit, are single-pole, double-pole or triple-poles. It is commonly used for lower electrical loads and smaller appliances such as lighting circuits.

WHEREASMCCB is also an electrical protection device that is used to protect the high current circuit, It has high current ratings ranging from 16 A to 1600 A, short-circuit current ratings up to 100 kA, short circuit time is about 9 ms , high interrupting current rating of, ranging from about 10 kA to 200 kA, have fixed or adjustable trip characteristics & have up to 4 poles.

MCCBs are best suited for industrial purposes such as protecting heavy-duty appliances and machinery.

MCBs are generally designed for lower breaking capacities. While MCCBs, on the other hand, are built for higher breaking capacities.