Circuit breaker prevent short circuit by cutting electricity

circuit breaker

What are circuit breakers, molded case circuit breakers and MCCBs? 1. What is a circuit breaker (MCCB’s)? A circuit breaker – also called MCCB – also known as circuit breaker, is a switching device that has a mechanical device to switch on, conduct and switch off the current under operating conditions (range of rated current for which a system is permanently designed). This energy distribution device differs from other switches in its ability to switch on the current, conduct it for a defined period of time and switch it off if the operating condition is exceeded, such as in the event of a short circuit
The circuit breaker is a device that cuts electricity in the event of a short circuit or over current. There are several types and they are arranged on the electrical panel of the installation. When the breaker jumps, the problem should be investigated before resetting.

The role of the electric circuit breaker

A circuit breaker operates in the same way as a switch, but it trips automatically. All electrical circuits and all devices are necessarily connected to a circuit breaker on the electrical panel that protects them from short circuits.

A short circuit occurs when two conductors of different polarity touch each other, thereby generating excessive over current. When all goes well, the current goes through the circuit breaker without being interrupted. If a short circuit occurs, a coil detects the over current and creates a magnetic field that opens the circuit breaker contacts.

The circuit breaker also protects against overloads. Each circuit is designed to support a specific intensity. In case of overtaking, the drivers get hot and the risk of fire increases. In the circuit breaker, the current in overload passes through a thermal device which is deformed gradually and eventually cause the opening of the circuit.

How it works

In a house, the meter is connected to the general circuit breaker which protects against overloads and short circuits. If too many devices are running simultaneously, the power subscribed by the subscriber may be exceeded and cause the general power failure. Divisional circuit breakers are connected to each area of ​​the home. There are also differential circuit breakers that protect people when in contact with metal masses that are accidentally energized.

If the grounds of the devices are properly grounded, then the differential will detect the difference in current and cut off the electrical circuit. To reset the electricity, simply reset the circuit breaker, provided you have previously detected and removed the current leak.

A well-protected electrical installation has a large number of circuit breakers. More or less sensitive, they will perfectly protect property and people. Enid recommends that you periodically check the correct operation of the circuit breakers.


Electrical circuit breaker Installation?

Namely, there are 3 types of electrical circuit breaker, starting with the general circuit breaker or the branch circuit breaker, or even differential circuit breakers. Whichever you choose, these circuit breakers all have their own features that you can take advantage of for your home in terms of safety.

The first solution will be to install a general circuit breaker in your home

Knowing that the purpose of this fairly general type of material will be to protect your electrical installation or the people living in your home. Note that domestic accidents related to electricity are now rare but can occur at any time. Its main purpose will be to ensure an emergency shutdown of your entire installation in the event that a problem is detected.

This type of circuit breaker will therefore be adjusted according to your subscription in terms of power chosen by the user. Not to mention that if your house is over connected and too many electrical devices are operating at the same time and will exceed the subscribed power, it will then trip and cut your current in an emergency.

However, this circuit breaker will not be enough to ensure the protection of your entire installation, you will have to add a few devices for that. Obviously this type of device will have to be installed inside the housing within the electrical panel and have the NF-USE standard.

The second solution

Your second solution will be to install a branch circuit breaker which will ensure the protection of the various electrical circuits of your entire installation. Namely, in the event of a problem, it will be able to cut your circuit which is responsible for the overload or the short circuit.Lower its lever and this will allow you to see which circuit is going to be involved.

Once this important problem to be taken into account has been resolved, once the electrical appliance is unplugged, all you have to do is raise the lever to restore your power.

For even more efficiency, you can install an efficient device directly at home known as a high sensitivity differential circuit breaker (about 30 mA) and which will protect all of your circuits from overloads or even short circuits, without forgetting the problems as well as the often unrecognized risks of electric shock.

This sensitivity will be related to the trigger threshold which will be similar to the cutoff effect, in the event of a current leak. High sensitivity of 30mA or less will be required.



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