Vacuum Circuit Breaker: The Silent Guardian of High Voltage Power

As the core switchgear of medium and high voltage distribution systems, vacuum circuit breakers achieve arc free breaking at the moment of current interruption through unique vacuum arc extinguishing technology (10 ⁻ 4 Pa vacuum degree), providing triple protection for power networks with voltage levels of 6kV-40kV:

Core role:

Safe disconnection: Utilizing the high insulation properties of vacuum media, the current is cut off within 3ms

Overload protection: automatically triggered when the current exceeds the rated value by 1.3-5 times

Short circuit protection: withstand a maximum short-circuit current of 63kA and quickly cut off

Technical highlights:
The contact material is made of copper chromium alloy, with an electrical life of over 10000 times
Oil free design eliminates the risk of explosion and adapts to environments ranging from -30 ℃ to 40 ℃
Compared to traditional low oil circuit breakers, the volume is reduced by 40%, and the maintenance cycle is extended by 5 times

From urban power grid substations to wind power plants, this pollution-free and low-noise switchgear is becoming the preferred solution for upgrading modern power systems.