what is the difference in mcb and mccb give full detail?

Answer 1

A circuit breaker is an automatically-operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit. Unlike a fuse, which operates once and then has to be replaced, a circuit breaker can be reset (either manually or automatically) to resume normal operation.
MCB (Miniature Circuit Breaker)—rated current not more than 100 A. Trip characteristics normally not adjustable. Thermal or thermal-magnetic operation.
MCCB (Moulded Case Circuit Breaker)—rated current up to 1000 A. Thermal or thermal-magnetic operation. Trip current may be adjustable.
SOURCE: wikipedia

Answer 2

MCBs are miniature circuit breakers with optimum protection facilities of overcurrent only.These are manufactured for fault level of up to 10KA only with operating current range of 0.5 to 63 Amps (the ranges are fixed), single,double and three pole verson.These are used for smaller loads -electronic circuits,house wiring etc.
MCCBs are Moulded case Circuit breakers,with protection facilities of overcurrent, earth fault.it has a variable range of 50% to 100% operating current.They can be wired for remote as well as local operation both.They are manufactured for fault levels of 16KA to 50KA and operating current range of 25A to 630Amps.They are used for aplication related with larger power flow requirement.
https://www.electrikals.com/products/rc-protection-devices/mccb/a?cid=689&cnid=131&cnid=132&page=1&pageSize=15

Answer 3

MCCB:
Larger and heavier, rated current limited to 1000A
More expensive
High breaking capacity, up to 70 KA available
Longer times fault for withstand capacity.
Adjustable over load, short circuit and earth fault setiings

MCBs:
Smaller and lighter, rated current limited up to 100A
Breaking capacity is low, up to 10 KA only
Lower withstand time (secs.) fault capacity
Need to be replaced following a limited number of faults
Fixed short circuit and over load settings.