Understanding The Difference Between The Mcb & Mccb?

The MCBs and the MCCBs are quite common terms nowadays. With the improved safety of the home electricity supply systems, the use of MCBs and MCCBs has become popular amongst the electricians. The MCBs and MCCBs have the same function, that is of being the electric circuit breaker.

The application of MCBs and MCCbs are different and used in different places. But people still consider them as the same device. There is no doubt that MCBs and MCCBs are quite a bit different from each other. Even though the differences are minor, the application is majorly different.

Learning the differences between MCBs and MCCBs is helpful. In this post, we are going to share the core differences between MCB and MCCB.

MCB is nothing but the Miniature Circuit Breaker (MCB). It’s the device, which breaks the circuit in case of electricity overload. The MCB is used in the home electricity supply.

This device prevents short circuits faults. Also, it’s quite useful to protect consumer electrical systems from overloading. Not just that, the MCBs protect the entire house from the electric fire hazard.

What is an MCCB?

MCCB is a Molded Case Circuit Breaker. It’s also a Circuit Breaker but has a different use case and features. The MCCB is used where there is a need for adjustable tripping.

The Molded Case Circuit trip at preset temperatures and the loads. But in the high current situations, the MCCBs are used to adjust the tripping level.

The MCCB operates on the Current and the temperature. The users can get Bimetallic MCCBs for running on both the current and temperature settings. It’s commonly used for industrial applications or large commercial spaces.

Tripping Circuit

The tripping circuit in MCB is fixed. But in the MCCB, the circuit is movable. You can adjust the tripping circuit according to your needs. But in MCB, that’s not possible.

Rating Current

The rating current of the MCB is fixed at 100 amps. Although there are products that have a higher rating than 100 amps, that’s rare. For MCCBs, the rating current scales from 10 amps to 200 amps.

Interrupting Rating

The MCBs are rated with current interruption levels of 1800 amps. It’s the absolute maximum any MCB can handle. On the other side, the MCCBs have current interruption levels of 10,000 amps to 200,000 amps. These ratings are very high and only suitable for the exclusive use case.

Applications

The MCBs are common in the low current circuit environment. In the low current environment, the overloading point is quite small. That’s why it’s common at the consumer end.

The MCCBs are useful in the high current circuit environment. Be it the big machines or the factories; it’s applied everywhere. The MCCBs are not suitable for a low current situation, as it’s dangerous.

The MCBs and MCCBs follow the same principle. But, the use case and application of these devices is pretty different. You can use the miniature circuit breaker in the house and apartments. On the other hand, you can use the molded case circuit breakers in industries, factories or any place where there is a high current circuit environment.

It’s essential to understand the difference between the devices. Otherwise, it’d be disastrous as playing with electricity is always dangerous.

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