Difference Between MCB and MCCB

MCB stand for Miniature circuit breakers, while MCCB stands 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 makes them application specific in an electric circuit.

Difference Between MCB and MCCB

Difference Between MCB and MCCB

The major difference between MCB and MCCB is due to their capacity. MCBs has 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 has 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.

Difference Between MCB and MCCB

MCB

MCCB

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 equipments 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 \(IEC_{947}\) standards

Trip characteristics cannot be adjusted

Trip characteristics can be adjusted

Interrupting rating under 18000 amps

Interrupting rating ranges from 10000 to 200000 amps

These were some difference between MCB and MCCB. If you wish to find out more, download BYJU’S The Learning App.

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A coil having n turns and resistance R Ω  is connected with a galvanometer of resistance 4RΩ . This combination is moved in time t seconds from a magnetic field W1 weber to W2 weber. The induced current in the circuit is