What is the difference between MCB & MCCB? Where can it be used?

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.

The main differences are The MCCB is equipped with tripping coil and can give a signal.
The protection board of MCCB is more developed.
It has L-L, L-G, thermal, and instantaneous setting, while MCB doesn't has those facilities.
MCCB is usually used for high current application/

MCB is miniature circuit breaker which is thermal operated and use forshort circuit protection in small current rating circuit.
MCCB moulded case circuitbreaker and is thermal operated for over load current and magnetic operation forinstant trip in short circuit condition.
under voltage and under frequency may beinbuilt.
Normally it is used where normal current is more than 100A

MCB is miniature circuit breaker which is thermal operated and use forshort circuit protection in small current rating circuit in branches of panel boards for small loads.
MCCB moulded case circuitbreaker and is thermal operated for over load current and magnetic operation forinstant trip in short circuit condition.
under voltage and under frequency may beinbuilt.
Normally it is used as amain circuit breaker for high loads and for high sensetives loads

An MCB has less than100 amps while an MCCB goes as high as2,500 amps

 

The interrupting rating for an MCB is18,000 amps up to200,000 amps for an MCCB

 

MCBs are mostly installed for home use while an MCCB is generally utilized for commercial or industrial purposes

 

Both are low-voltage circuit breakers created to respond to IEC947 standards

 

Some MCCB units are specially made to respond to remote control signals usually as standby power