
Fkn12A-12D Pneumatic Load Switch-Fuse Combination Unit. Pneumatic Operation Mechanism: Operated by compressed air for safe, rapid switching and strong arc extinction. Integrated Current-Limiting Fuses: Ensures fast protection for transformers, cables, and electrical equipment under fault conditions. High Mechanical Life: Rated for 2000 mechanical operations for long-term reliability. Comprehensive Protection Functions: Performs load breaking, short-circuit protection, and disconnection in AC 50Hz networks. OEM and ODM Services Available: Supports customization from samples, designs, full, and minor customization options. 100% Finished Product Inspection: All units undergo visual and function inspection before shipment. Fast Lead Time: Production completed within 15 workdays for both peak and off-peak seasons. Wide Application Compatibility: Ideal for compact substations, industrial distribution cabinets, and RMUs.