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Difference Between MCB And MCCB

Circuit breakers are installed in power infrastructure for safety reasons. They are introduced to make sure that fire hazards or any sort of electrical issue would not occur in home or office when system experiences ‘short circuit’ or ‘overload’. This is the only reason; MCB or MCCB should be installed.

Most of the people are confused about the dissimilarity between MCB and MCCB. Both of these devices are circuit breakers yet there is a major difference between them and they are used for specific purposes.

Before we start discussing about the key features, it is more important to know their actual meaning.

The Meaning

MCB, an abbreviated form of “Miniature Circuit Breakers”, is an electromechanical device that protects electrical circuit from over-current. On the other hand, MCCB is a short form of “Molded Case Circuit Breaker” that is a kind of electrical protection device used for varied voltages.

Main Difference

Judging from power capacity, MCB is utilized for low energy requirements such as small electrical circuits and home wiring. Whereas, MCCB is more suited for delivering energy for high power devices and used in commercial and industrial installations.

MCBs are rated under 100 amps with interrupting rating of under 18000 amps. While, MCCB comes with adjustable trip making it is suitable for higher models. Normally, this kind of circuit breaker would offer Ampere ratings as high as 2500 or as low as 63 completely depends on what is necessary. Interrupting rating can be nearly 10,000 amps to 200000 amps.

Although MCCB has higher capacity than MCB, both the devices are classified under the low voltage circuit breakers and therefore, they should respond to the standards that are set by the IEC 947. For the sake of convenience, some MCCBs possess electrical motor operators that means they can be tripped only with the help of remote control. For commercial use, they can be utilized as standby power running on automatic transfer switch.

Visit www.bestofelectricals.com to buy MCB or MCCB online. At the site, you can find and Buy branded electrical products at the best price.

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