Structure and Principle：
Structural Features: Employs a center-sealed longitudinal magnetic field vacuum interrupter chamber, coupled with a spring-operated mechanism (some models include a built-in mechanism); the frame is secured to dynamic/static supports via insulators, providing both insulation and mechanical strength.
Arc Extinguishing Principle: Utilizes a vacuum environment (extremely high vacuum) for arc extinguishing. The longitudinal magnetic field design of the contacts maintains a diffuse arc, rapidly restoring insulation strength when the current crosses zero, resulting in stable breaking capacity.
Core Advantages：
Environmental Adaptability: Withstands temperatures from -10℃ to +40℃, altitudes ≤1000m (high-altitude models available upon customization), with no risk of explosion or contamination.
Reliable Performance: Mechanical life up to 10,000 cycles, total breaking time ≤100ms, supports an operating sequence of "0-0.3s-CO-180s-CO".
