VS1 Vacuum Circuit Breaker

Say goodbye to the risk of equipment damage caused by weak arc-extinguishing capability

Are you worried that in the event of a short circuit on a high-voltage line, the circuit breaker, due to its insufficient arc-extinguishing capability, will be unable to cut off the current, resulting in the burning of the transformer or even an explosion? In a 10kV high-voltage environment, the arc energy is enormous. Traditional oil circuit breakers or ordinary switches are no longer able to meet the strict safety requirements of modern power grids. The VS1 Vacuum Circuit Breaker from Junray Electrical was specifically designed to address this core pain point. We use vacuum as the arc-extinguishing medium and leverage its extremely high insulation strength and arc-extinguishing capability to quickly extinguish the arc at the zero-crossing point of the current. This means that no matter how severe the short circuit fault on the line is, it can reliably cut off the power supply, prevent the expansion of the fault, and completely eliminate your concerns about the high-voltage breaking capacity.

Vacuum Arc Interruption and Precise Protection

The core competitiveness of VS1 Vacuum Circuit Breaker lies in its advanced arc interruption chamber design and reliable spring operating mechanism:

Superb interrupting capacity: Utilizing a dedicated vacuum arc interruption chamber, the contactor has low contact resistance and short arc duration. Compared to older equipment, it can interrupt larger short-circuit currents (up to 40kA), perfectly adapting to the harsh conditions of 10kV high-voltage lines, ensuring that it can still "break and extinguish" in extreme faults.

Dual protection mechanism: Equipped with precise overload and short-circuit protection functions. When an abnormality in the line current is detected, in conjunction with the relay protection device, it can automatically and rapidly disconnect the circuit, effectively protecting expensive high-voltage equipment such as transformers and cables, and preventing permanent damage due to overcurrent.

Standardized compatibility: Compact in size, it can be perfectly installed on the vehicle, not only saving the internal space of the switch cabinet, but also making maintenance and repair extremely convenient, with operation achievable by simply pushing in or pulling out.

Junray Electrical's Quality Assurance

As a professional Manufacturer with profound technical expertise, Junray Electrical strictly adheres to the national standards of VS1 vacuum circuit breakers during production. Our factory is equipped with advanced vacuum casting and assembly lines, ensuring that every circuit breaker meets industrial standards.

This VS1 Vacuum Circuit Breaker features a highly reliable spring-stored operating mechanism, with crisp and precise opening and closing actions, long mechanical lifespan, and extremely low failure rate. Each circuit breaker undergoes strict power-on debugging, power frequency withstand voltage tests, loop resistance tests, and mechanical characteristic tests before leaving the factory, ensuring stable operation at rated currents ranging from 630A to 3150A, providing you with long-lasting high-voltage security protection.

Technical Specifications 

Applicable scenarios:

Industrial power distribution: 10kV incoming and outgoing cabinets for factories, protecting large motors and transformers.

Commercial buildings: High-voltage power receiving cabinets for high-rise buildings and office buildings.

Substations: Core protective components of various 10kV indoor substations.

One-stop solution

Choosing Junray Electrical is not merely choosing a Supplier, but choosing a reliable partner for high-voltage safety. We have a professional team of 50 people, including 5 full-time quotation engineers, who can provide you with fast and precise customized services.

We promise to offer 7×24-hour global rapid response. If you are looking for a product that can perfectly fit the KYN28 cabinet, has strong breaking capacity and is reliable, don't hesitate any longer. Contact us immediately to get free technical consultation and quotations, and let Junray Electrical build a safe, stable and efficient power distribution system for you.

FAQ

Question: In which cabinet types can this VS1 Vacuum Circuit Breaker be used?

Answer: It is mainly designed for KYN28 AC Metal-Enclosed Switchgear, and it can also be compatible with XGN2 and other fixed high-voltage cabinets. Its standardized size and installation holes ensure perfect compatibility with mainstream cabinet types.

Question: Does the vacuum interrupter require maintenance?

Answer: The vacuum interrupter is maintenance-free. It is sealed within an insulating cylinder and is not affected by external dust or moisture. Only regular mechanical characteristic checks and loop resistance tests are required, significantly reducing the maintenance workload.

Question: Is it possible to customize the rated current and breaking capacity?

Answer: Yes, it is possible. We can customize different current levels such as 630A, 1250A, 1600A, 2000A, 2500A, 3150A, and different breaking capacities such as 20kA, 25kA, 31.5kA, 40kA according to your project requirements, to ensure a precise match with your system parameters.