China Outdoor Circuit Breakers Factory

"JECSANY" is a professional China various medium and high voltage product provider which supplies Outdoor Circuit Breakers, switchgear, surge arresters, dropout fuses, polymer/porcelain insulators, power tools, power accessories, OPGW/ADSS optical cable, distribution transformers, etc. And be able to provide one-stop service for new and old customers, including product development, design, manufacturing, transportation, installation, and after-sales service.

Outdoor Circuit Breakers are named after its arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are both high vacuum; it has the advantages of small size, light weight, suitable for frequent operation, and no need for maintenance of arc extinguishing. The application in the power grid is more popular. The vacuum circuit breaker is an indoor power distribution device in a 3~10kV, 50Hz three-phase AC system. It can be used as the protection and control of electrical equipment in industrial and mining enterprises, power plants, and substations. For maintenance and frequent operation places, circuit breakers can be configured in middle cabinets, double-layer cabinets, and fixed cabinets to control and protect high-voltage electrical equipment.

Vacuum circuit breakers can usually be divided into multiple voltage levels. The low-voltage type is generally used for explosion-proof electrical applications. Like coal mines and so on.
The rated current reaches 5000A, and the breaking current reaches a good level of 50kA, and has developed to a voltage of 35kV.

Vacuum circuit breakers mainly include three parts: vacuum interrupter, electromagnetic or spring operating mechanism, bracket and other components.

The working principle of the vacuum circuit breaker is: when the moving and static contacts are opened under the action of the operating mechanism, an arc is generated between the contacts, and the contact surface volatilizes steam at high temperature. Because the contact is designed with a special shape, When passing through, a magnetic field is generated. Under the action of this magnetic field, the arc moves rapidly along the tangential direction of the contact surface. Part of the metal vapor is condensed on the metal cylinder (shielding cover). The strength of the medium quickly recovered.

"JECSANY" Outdoor Circuit Breakers have stable quality and have third-party IEC test reports, and the products are exported to Southeast Asia, South Africa, South America, the Middle East and other global markets. OEM customization can also be made according to the drawings or samples provided by customers.