Medium Voltage Metal Enclosed Switchgear

KYN61-40.5 Armored Metal-Enclosed Switchgear

The KYN61-40.5 armored metal-enclosed switchgear is suitable for three-phase AC 40.5kV single busbar and single bus sectionalized power systems. It is used for receiving and distributing electrical energy, as well as for control, protection, and monitoring of circuits.

The KYN61-40.5 switchgear features a fully internal arc fault-resistant design, with a maximum seismic resistance rating of AC3 (seismic intensity 8). It is equipped with a complete five-interlock protection system, and the internal air clearance is ≥300 mm, fully complying with the requirements of State Grid and China Southern Power Grid. Optimized heat dissipation channels ensure both internal arc resistance and safe operation. The product has passed type tests conducted by national authoritative testing institutions.

Advantages & Features

• Metal-armored and enclosed structure effectively prevents fault propagation

• Modular circuit breaker design with simple structure, high reliability, and long service life

• Insulation clearance ≥300 mm

• Compatible with various main switching devices, such as vacuum circuit breakers and SF₆ circuit breakers

• Complete isolation between high-voltage and low-voltage compartments

• Full five-interlock protection system prevents misoperation and allows operation with the door closed

• With composite insulation, suitable for altitudes up to 3500 m

• Optional intelligent components such as motorized vacuum circuit breakers, motorized earthing switches, and wireless temperature monitoring for one-click sequential control and cable temperature measurement

• Double-sided maintenance design with compact structure for easy servicing

• Fully internal arc fault-resistant design, up to 31.5 kA / 1 s

• Designed and manufactured in accordance with Chinese national and international standards, and has passed full type tests

Technical Parameters

* Switchgear with rated current of 2500A and above requires forced air cooling.
** The thermal and dynamic stability currents of current transformers are related to the transformation ratio. Please consult the manufacturer when placing an order.

About Us

Backed by a 36,000-square-meter production base and 200 experienced employees, we specialize in complete switchgear solutions from 0.22kV to 35kV, covering R&D, manufacturing, sales, and electrical engineering services. Our products are widely used in industrial, public, commercial, and healthcare sectors, supported by efficient production and stringent quality control systems.

Global Projects
With a presence in more than 20 countries and regions, we specialize in supplying medium and low voltage switchgear for diverse construction applications. Committed to “Professional Production and Attentive Service,” we follow core values of integrity, innovation, efficiency, and shared success to deliver reliable products worldwide.

Client Visit

Raw Material Display