Difference Between MCB and MCCB
Difference Between MCB and MCCB
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MCB (Miniature Circuit Breaker) Characteristics :
Rated current not more than 100 A. Trip characteristics normally not adjustable. Thermal or thermal-magnetic operation.
MCCB (Moulded Case Circuit Breaker) Characteristics :
Rated current up to 1000 A. Trip current may be adjustable. Thermal or thermal-magnetic operation.
MCB Vs MCCB 1.
An MCB has less than 100 amps.
while an MCCB goes as high as 2,500 amps.
2.
The interrupting rating for an MCB is 18,000 amps
Up to 200,000 amps for an MCCB.
3.
MCBs are mostly installed for home use
While an MCCB is generally utilized for commercial or industrial purposes.
4.
Both are low-voltage circuit breakers created to meet IEC 947 standards.
The location of circuit breakers in every structure should be known to the people who reside in it.
5. Some MCCB units are specially made to respond to remote control signals, usually as standby power.
6. Circuit breakers are installed for safety reasons.
Note :
MCBs automatically switches off the electrical circuit during abnormal condition of the network means in over load condition as well as faulty condition.
The fuse does not sense but miniature circuit breaker does it in more reliable way. MCB is much more sensitive to over current than fuse.
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