What Are MCCBs, MCBs, RCCBs, And ECCBs?

Circuit breakers are widely available in the market, and they protect the entire electrical system in the home. In the absence of circuit breakers, the house faces the risk of electrical fires causing damage. Circuit breakers come in various versions to suit different needs.

If you are interested in learning the difference between the different circuit breakers, you are in the right place. We will discuss in detail Circuit Breakers in this post, including MCBs, MCCBs, RCCBs, and ELCBs. By learning, you will distinguish between the various types of circuit breakers and buy the most appropriate one for your needs.

What Are MCCBs?

Moulded Case Circuit Breakers (MCCB) are devices that provide internal support and enclose protective materials. The conductors are used to drive, convey, and break flows between independent contacts under typical circuit conditions and abnormal circuit conditions, for example, over-burden states and short-circuit conditions. MCCBs guarantee the safety of a low-voltage distribution system. They are high-end circuit breakers.

The MCCBs smother the curve within the formed case by intruding on current levels from a few amperes to a few kiloamps. The MCCB is useful for protecting the framework against overloads and short circuits with the help of a delivery that could be either thermal-magnetic or microprocessor. MCCBs fulfil the requirement of separation because they completely disengage the circuit.

What Are MCBs? 

Miniature Circuit Breakers (MCBs) are one of the core elements in the home electrical distribution system. MCBs are extremely common in households. With these circuit breakers, we can ensure the safety of our house or office in the case of the current surge.

Circuit breakers have a thermal element, which conducts the electricity. This system causes the electric supply in the home to trip and disrupt for a couple of minutes. It is a good and reliable system as it protects the household equipment from damages due to an overload of electricity. And in such cases, the MCB prevents any damage and hazardous short circuit fires.

What Are RCCBs? 

Residual Current Circuit Breakers (RCCBs) are known for protecting against any leakage in the current flow. The RCCBs immediately disconnect the electricity flow as soon as it detects any leakage in the current, which prevents people from getting a direct shock because of exposed wires. 

RCCBs are extremely potent for shock protection as they provide full proof protection. They can protect from leakage from 100mA up to 300mA in houses and commercial buildings.

What Are ELCBs? 

The Earth Leakage Circuit Breakers (ELCBs) are comparatively an older technology of circuit breakers which is now rarely used in this modern era.

Back in the day, the protection provided from the residual current was supplied, earthing the negative points to drain out the excess current.


Circuit breakers are made for protection from a sudden surge in electrical current, and the circuit breakers put people and electrical devices well-being first. We hope this was helpful and that you now know which circuit breaker is the best for your home or office.