What is a medium voltage circuit breaker?

O-que-é-um-disjuntor-de-média-tensão

Medium voltage circuit breakers are essential electrical devices to ensure the safety and efficiency of electrical systems.

After all, they are responsible for interrupting the electrical current in cases of overload or short circuit, preventing damage to equipment and ensuring everyone's safety.

In this content, we will discuss the main benefits of medium voltage circuit breakers, as well as the different types available on the market. Let's go!

What are medium voltage circuit breakers?

Medium voltage circuit breakers are those that can interrupt electrical currents of up to a few hundred thousand amps and voltages of up to 72.5 kV.

Therefore, they are generally used in electricity distribution networks, industries and other applications where there is demand at higher levels.

4 Benefits of Medium Voltage Circuit Breakers

Check out 4 advantages of using medium voltage circuit breakers.

1. More efficient maintenance and repair

With the use of medium voltage circuit breakers, it is possible to easily identify faults in the electrical system and carry out the necessary maintenance and repairs more quickly and efficiently.

2. Reducing the risk of fires

Medium voltage circuit breakers reduce the risk of fires caused by overloads or short circuits in the electrical system.

3. Energy saving

The use of medium voltage circuit breakers guarantees the energy efficiency of the electrical system, avoiding energy losses and providing greater savings.

4. Greater system reliability

With the use of medium voltage circuit breakers, the electrical system becomes more reliable, ensuring the continuity of the energy supply and minimizing the risk of system failures.

What are the main types of medium voltage circuit breakers?

Find out now which are the most modern technologies for medium voltage circuit breakers.

Gas circuit breakers (SF6)

SF6 circuit breakers are older, having appeared in the 1950s. Thus, they use sulfur hexafluoride gas (SF6) as an insulating medium to protect electrical systems against overloads and short circuits.

This type of circuit breaker is widely used in high and medium voltage systems due to its properties, such as:

  • high electrical and chemical resistance;
  • thermal stability; and
  • good arc extinguishing capacity.

Furthermore, SF6 circuit breakers have low maintenance costs and a long service life.

Vacuum circuit breakers

Vacuum circuit breakers are newer models, having started to be used in the early 1970s.

So, as the name suggests, it uses vacuum as an insulating medium. This way, there is no decomposition of gases, ensuring greater efficiency and reliability of the device.

Furthermore, the absence of burning and oxidation of the circuit breaker's electrical contacts provides a longer useful life for the equipment. Therefore, there is a reduction in costs with maintenance and replacement of parts.

We are specialized in medium voltage circuit breakers

Trifásica Elétrica is an Advanced Distribution Center that has over 15 years of experience from its technical staff, bringing together the entire line of materials for 15 to 36 kV lines.

To this end, it sells extremely high-quality products and has a highly qualified team to provide excellent customer service.

So if you are in need of medium voltage circuit breakers or other materials for primary cabinet, Contact us! It will be a pleasure to help you!

Three-phase electrical, sustainable energy that connects you with the environment!

 


 

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2 Comments

  1. […] conventional primary cabin is a structure that houses equipment such as transformers, circuit breakers and disconnect switches. Thus, it reduces the high voltage of the electrical network to safe levels and […]

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