KYN28-12 Indoor Metal-Enclosed Withdrawable AC Switchgear is a high-performance, modular power distribution equipment designed for 3.6kV–12kV, 50Hz three-phase AC power systems. Widely recognized as the mainstream medium-voltage switchgear solution, it is primarily used in power plants, substations, industrial facilities, commercial buildings, and distribution networks for receiving, distributing electrical energy, and providing control, protection, and monitoring functions.

1. High Safety & Reliability
   • Fully enclosed metal-clad structure with independent compartments for busbars, circuit breakers, cables, and control units, preventing accidental contact with live parts and containing internal arcs.
   • Built-in mechanical interlocks prevent misoperations such as door opening with the breaker closed or closing with the breaker in test position.
2. Convenient Maintenance & Operation
   • The withdrawable vacuum circuit breaker is mounted on a movable truck, allowing easy removal and replacement without shutting down the entire busbar, significantly reducing maintenance downtime.
   • Clear status indicators and ergonomic operating mechanisms simplify routine inspections and switching operations.
3. Flexible & Modular Design
   • Supports multiple configurations, including incoming, outgoing, PT (potential transformer), metering, and feeder protection units, adapting to diverse power distribution needs.
   • Compact footprint and standardized dimensions enable easy integration into new or existing substations and switch rooms.
4. Durable & Low-Maintenance Performance
   • High-quality components and robust construction ensure long service life, with minimal routine maintenance required.
   • Suitable for use in various environmental conditions, including humid, dusty, and industrial settings.

• Power plants and substations
• Industrial plants and manufacturing facilities
• Commercial buildings, shopping malls, and high-rise complexes
• Data centers and telecommunications facilities
• Prefabricated compact substations and distribution networks