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​Why do we need a Vacuum Circuit Breaker?

Views: 0     Author: Site Editor     Publish Time: 2022-01-20      Origin: Site

​Why do we need a Vacuum Circuit Breaker?

In urban life today there are different household appliances in every family. When using these devices, people's safety awareness is very low. How is the Vacuum Circuit Breaker used and its function? Properly suited for Vacuum Circuit Breakeres, can guarantee the safety of our families and relatives.


What is the function of the Vacuum Circuit Breaker?

What are the characteristics of using Vacuum Circuit Breakers?

What are the main features of Vacuum Circuit Breakers?


What is the function of the Vacuum Circuit Breaker?

A Vacuum Circuit Breaker is a switch capable of closing, conducting and interrupting the current under normal circuit conditions and of closing, conducting and interrupting the current under abnormal circuit conditions (including short circuit conditions) within a specified period of time. Vacuum Circuit Breakers can be used to distribute electrical energy, rarely start Asynchronomotors and protect power lines and engines. You can automatically interrupt the circuit if there are serious overload, short circuit or under-voltage errors. Its function corresponds to a security type. Combination of switches and overheating relays etc. Furthermore, a partial change after the fault current is switched off is not usually required. Currently it is widespread.


What are the characteristics of using Vacuum Circuit Breakers?

The Vacuum Circuit Breaker is used to switch off and off the load circuit as well as to switch off the faulty circuit in order to prevent the spread of the accident and to ensure safe operation. The high voltage power switch shall interrupt the 1500-V arc with a current of 1500-2000A. These arcs can be stretched to 2 m and still burn without extinguishing.

Vacuum Circuit Breakers are also known as automatic air switches, which can be used to switch on and off load cycles as well as to control rare starting engines. Its function corresponds to the sum of a part or appliance such as a knife switch, an overhead relay, a voltage loss relay, thermal insulation and creep protection and is an important electrical protection device in the low voltage energy distribution network.

Vacuum Circuit Breakers have a variety of protective functions (overload, short circuit, low voltage protection, etc.), adjustable trigger value, high power output, comfortable operation, safety, etc. and are therefore currently widespread. The low voltage power switch consists of drive, contacts, protective devices (various triggers), arc extinguishing system, etc.


What are the main features of Vacuum Circuit Breakers?

The main characteristics of Vacuum Circuit Breakers are: Ue measurement voltage; In stream; overload protection (Ir or Irth) and short circuit protection (Im) trigger current adjustment range; Measurement short-circuit power off (industrial power switch Icu; household power switch Icn) and so on.

Measurement operating voltage (Ue): This is the voltage at which the power switch operates under normal (continuous) conditions.

Nominal current (In): This is the maximum current value that a power switch equipped with a special overdrive trigger relay can withstand for an indefinite period under the ambient temperature specified by the manufacturer and does not exceed the temperature limit specified by the leading component.

Short-circuit relay release current setting (Im): The short-circuit release relay (instantaneous or short-term) is used to trigger the power switch quickly when a high power failure occurs.


The Vacuum Circuit Breakers are becoming more and more used. Zhejiang Zhegui Electric Co., Ltd has been focused on Vacuum Circuit Breakers for several years. They will make every effort to meet the needs of users.


We will work with other excellent partners to deliver more high-quality products to the world.

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