Difference Between MCB and MCCB

MCB is the abbreviation for Miniature circuit breakers, whereas MCCB is the abbreviation for Molded Case Circuit Breaker. There is some difference between MCB and MCCB which should be known in order to know their feature and uses. Their differences make them application-specific in an electric circuit.

Difference Between MCB and MCCB

What is the Difference Between MCB and MCCB?

The major MCB and MCCB difference are due to their capacity.

  • MCBs have a rating under 100 amps with an interrupting rating under 18000 amps and their trip characteristics cannot be adjusted as they cater low circuits.
  • MCCBs, on the other hand, have adjustable trip characteristics, and they are used in high circuits and give high amps as 2500 amps to low as 10 depending upon the requirements and their interrupting rating ranges from 10000 to 200000 amps.

These are made to respond to remote control signals with the help of electrical motor operators and are used as standby power in industries and commercial purposes.




It is used for low energy requirements such as small electronic circuits or home wiring MCCBs are used in high energy requirement regions such as high-power equipment in industries or commercial purpose
MCBs has less than 100 amps MCCBs goes high as 2500 amps
It is a low voltage circuit breaker It is also of low voltage to meet
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Trip characteristics cannot be adjusted Trip characteristics can be adjusted
Interrupting rating under 18000 amps Interrupting rating ranges from 10000 to 200000 amps

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