MCB is the abbreviation for Miniature Circuit Breakers, whereas MCCB is the abbreviation for Molded Case Circuit Breaker. There are some differences between MCB and MCCB which should be known in order to know their features and uses. Their differences make them application-specific in an electric circuit.
What Is the Difference between MCB and MCCB?
The major differences between MCB and MCCB 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 to 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.
Read More: Electric Circuit
MCB vs MCCB |
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MCB |
MCCB |
| These are used for low energy requirements such as small electronic circuits or home wiring. | MCCBs are used in high energy requirement applications such as high-power equipment in industries or for commercial purposes. |
| MCBs have ratings under 100 amps. | MCCBs goes as high as 2500 amps. |
| It is a low-voltage circuit breaker. | It is also of low voltage to meet IEC947 standards. |
| Trip characteristics cannot be adjusted. | Trip characteristics can be adjusted. |
| Interrupting rating under 18000 amps. | Interrupting rating ranges from 10000 to 200000 amps. |
You may also want to check out these topics given below!
- Working Principle of an Electrical Fuse
- Types of Circuits
- Difference Between Capacitor And Inductor
- Difference Between Diode And Rectifier
- Electrical Motor
Frequently Asked Questions – FAQs
Q1
What is MCB?
MCB (Miniature Circuit Breaker) is a low voltage circuit breaker which is used for low energy requirements such as small electronic circuits or home wiring.
Q2
What is MCCB?
MCCBs (Molded Case Circuit Breaker) are used in high energy requirement regions such as high-power equipment in industries or for commercial purposes.
Q3
What is an electrical fuse?
An electrical fuse is a safety device that operates to provide protection against the overflow of current in an electrical circuit.
Q4
List some functions of the fuse.
The functions of the fuse are:
- Prevents device failure due to faulty circuit operation
- Prevents overload and blackouts
- Fuse prevents short-circuits
- Prevents damage that is caused due to mismatched loads
Q5
What is a short circuit?
When the current in the circuit increases heavily, and the electrical connection draws excess current from the supply, it is called a short circuit. The magnitude of the current is very high during this period. It takes place when neutral and live wires touch each other.
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