Why You Should Choose the MCCB Carefully

Moulded Case Circuit Breaker

Sometimes the jargon used by the experts can get a bit overwhelming. You want your

home, office, facility, or any other place using electricity for lighting and other work to be

safe. You certainly don’t want to be part of the statistics pertaining to fires caused by

short circuits blowing. You might even have been advised to install MCCB for your

electric panels, but are thoroughly puzzled as to what MCCB stands for, and what is its

utility.

Know the Basics of MCCB

The full form of MCCB is moulded case circuit breaker. It is housed in a moulded case

to protect it from external elements like dust, rain, oil, and chemicals. As a circuit

breaker, the MCCB is vital for the security of your installation, facility, factory, and

warehouse, and the people.

What is MCCB? 

A molded case circuit breaker, abbreviated MCCB, is a type of

electrical protection device that can be used for a wide range of voltages, and

frequencies of both 50 Hz and 60 Hz. As with most types of circuit breakers, an MCCB

has three main functions:

 Protection against overload – currents above the rated value that last longer than

what is normal for the application.

 Protection against electrical faults – During a fault such as a short circuit or line

fault, there are extremely high currents that must be interrupted immediately.

 Switching a circuit on and off – This is a less common function of circuit breakers,

but they can be used for that purpose if there isn’t an adequate manual switch.

The wide range of current ratings available from molded-case circuit breakers allows

them to be used in a wide variety of applications. MCCBs are available with current

ratings that range from low values such as 15 amperes, to industrial ratings such as

2,500 amperes. This allows them to be used in both low-power and high-power

applications

The Differences between a Fuse and MCCB

There are significant differences in a fuse and a MCCB. When there is an overload, the

metal which constitutes a fuse melts; thereby creating a break in the power supply. The

MCCB simply switches off power supply to prevent any adversity caused by an 

electrical fault. This is the major advantage which MCCB enjoys over the fuse as it only

needs to be reset, whereas the fuse needs to be replaced since it melts. However, a

fuse shuts off electricity faster. Fuses are gradually getting phased out with miniature

circuit breakers (MCBs) and MCCBs, even though MCCBs are more expensive as they

are safer.

The Differences between MCB and MCCB

The main distinctions between moulded-case and miniature circuit breaker are that the

MCCB can have current ratings of up to 2,500 amperes, and its trip settings are

normally adjustable. An additional difference is that MCCBs tend to be much larger than

MCBs

Avert Damages to Your Expensive Equipments

Your expensive and not-so expensive equipment need a steady flow of current to

remain functional. Remember, machine control systems are delicate, and require

protection. It makes sense to install a main MCCB, and a MCCB or MCB at your facility

depending on the load. This serves to isolate power supply in the event of electrical

fault. A main MCCB enables you to switch off the electricity supply to the entire building

or department, and prevent spread of a fire; especially when the fire has been caused

by a short circuit.

Prevent Fires

Always buy an MCCB which carries the guarantee of having been manufactured using

durable materials, and has undergone rigid quality control procedures to meet

international standards of safety. Keep in mind that the MCCB protects your electrical

equipment. This electromagnetic device detects a fault when there is a sudden electric

surge causing a short circuit. Since the short circuit offers little or no resistance to the

electrons flowing around the conductor, it can generate an enormous amount of heat

raising the danger of fire, and even an explosion.

Takeaway: It is your duty to protect lives and property which are in your care.

Therefore, you should jeopardize neither by overlooking the safety measures needed

during electrification like installing MCCBs from a reliable manufacturer, as the quality of

materials used and production methods can impact overall quality and dependability.

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