KYN61-40.5 Switchgear

The KYN61-40.5 Switchgear is an armored, withdrawable AC metal-enclosed medium-voltage unit, widely deployed in substations, industrial plants, high-rise building power rooms, and large-scale industrial parks. As a critical front-end device, it manages high-voltage power reception, main switching operations, and overall system protection, ensuring a stable and safe power distribution network.

The switchgear utilizes a standard withdrawable design, allowing the vacuum circuit breaker unit to be serviced or replaced independently, without interrupting power to the rest of the system. High-performance vacuum circuit breakers provide rapid response and robust breaking capacity, quickly isolating faults. An integrated "five-prevention" interlocking system safeguards against incorrect operation, while the compartmentalized layout and high-quality insulation maintain long-term reliability.

Standards: IEC 60298, GB 3906-2006, DL/T 404
Rated Voltage: 12 kV
Rated Current: 630A, 1250A, 1600A, 3150A
Short-Circuit Breaking Capacity: 25 kA, 31.5 kA, 40 kA
Insulation Level: 42 kV (power frequency), 75 kV (impulse)
Protection Level: IP40

The cabinet is constructed from high-strength cold-rolled steel, processed with CNC laser cutting, precision bending, and welding to achieve superior rigidity. Fully separated compartments-including busbar, breaker, cable, and instrument sections-prevent fault propagation and facilitate safe maintenance. Tin-plated copper busbars and premium epoxy insulation components guarantee stable electrical performance. Each KYN61-40.5 Switchgear is backed by professional installation guidance, commissioning support, protection setting, and comprehensive after-sales services.