Reliable Vacuum Arc Extinction
With vacuum as the arc-extinguishing and insulating medium, the arc is quickly extinguished inside the vacuum interrupter, eliminating risks of arc burning, fire, or explosion. It is suitable for frequent operations and repeated short-circuit breaking scenarios.
Compact Structure & Easy Maintenance
Modular draw-out design (fixed type is also optional) allows direct installation in KYN28 and other central switchgear cabinets, enabling convenient replacement and maintenance. It features a stable mechanical structure, long mechanical life, and minimal routine maintenance requirements.
Strong Compatibility & Wide Applications
It adapts to 12kV voltage-level distribution systems, and can be used for the protection of transformers, busbars, high-voltage motors, as well as frequent switching of capacitor banks and reactors.
Safe Design with Multiple Protections
The front panel is equipped with opening/closing indicators, energy storage indicators, and anti-misoperation interlock mechanisms. It also features supporting control interfaces for overcurrent and short-circuit protection to ensure operational safety.
Arc Extinction Chamber: The red insulating cylinder in the image is the outer shell of the vacuum interrupter, which houses the vacuum bubble and performs arc extinction and insulation functions as the core component of the circuit breaker.
Operating Mechanism: Located inside the main body of the circuit breaker, it achieves opening and closing actions through spring energy storage, supporting both manual and electric operations. The green "I" on the panel is the closing button, and the red "O" is the opening button, with an energy storage status indicator provided.
Draw-out Base: The guide rail and locking structure at the bottom are used for pushing in/pulling out the circuit breaker inside the switchgear cabinet, working with the interlock device to prevent misoperations (e.g., preventing live-load opening/closing of the circuit breaker).
Secondary Control Interface: The control cable interface at the top is used to connect the secondary circuit, enabling remote opening/closing, status monitoring, and protection linkage.
