Advanced Contact Structure

Utilizes high-quality, low-wear copper-chromium (CuCr) or copper-tungsten (CuW) contact materials.

Special contact design (e.g., spiral, axial magnetic field, or cup-shaped) ensures excellent current interruption performance and uniform contact surface wear, significantly extending service life.

Superior Insulation & High Vacuum

The hermetically sealed ceramic or glass envelope maintains an ultra-high vacuum (typically below 10^-4 Pa), providing exceptional dielectric strength.

Effectively prevents insulation deterioration and internal flashover, ensuring long-term reliability and safety.

Excellent Arc Extinguishing Performance

Exploits the high dielectric recovery strength of vacuum. When contacts separate, the metal vapor arc is quickly extinguished at the first current zero crossing.

Enables rapid, reliable interruption of fault currents and load currents, with minimal arc energy and contact erosion.

Compact & Maintenance-Free Design

Highly integrated and sealed structure protects internal components from environmental factors like moisture, dust, and contamination.

Requires no maintenance or medium replacement throughout its operational life, reducing total cost of ownership.

Environmentally Friendly & Safe

Contains no SF6 gas or oil, eliminating greenhouse gas emissions and risk of fire or explosion.

Non-toxic, non-polluting, and fully compliant with green electrical equipment standards.

Wide Application Range

Suitable for various voltage classes (medium voltage up to 40.5kV is common) and numerous switching applications.

Ideal for circuit breakers, contactors, load switches, and reclosers in power distribution networks, industrial control, renewable energy systems, and mining.

Long Mechanical & Electrical Life

Capable of withstanding a high number of mechanical operations (e.g., 10,000-30,000+).

Designed for numerous electrical operations at rated current and a specified number of full short-circuit current interruptions.