Leading Indoor Vacuum Circuit Breaker Manufacturer

The Usune Side Mounted Indoor Vacuum Circuit Breaker (Model: VS1-12 Series) is a fixed-installation high-voltage switchgear designed specifically for indoor use. It is suitable for three-phase power systems with rated voltages of 6KV, 10KV, 11KV, and 12KV, and frequencies of 50/60Hz, serving as a core protection and control device. As a professional manufacturer in China, Usune strictly controls quality to ensure its products meet domestic and international industry standards, making it a trusted supplier for global power projects.

Usune HV Indoor Vacuum Circuit Breakers, encompassing the GVS9-12GD and ZN19-12GD series, are core products of the Usune brand. Developed and manufactured by a professional Chinese manufacturer, they boast superior electromechanical performance, reliable insulation protection, and maintenance-free operation. The products feature solid-state embedded terminals, a modular design, and comprehensive electromechanical interlocking devices, making them suitable for 3.6-12kV power systems and widely used in power grids, industrial and mining enterprises, and other scenarios. As a professional supplier, Usune provides highly reliable high-voltage power distribution solutions to global users through stringent quality control.

The Usune 24kV Vacuum Circuit Breaker (Model: VS1(ZN63-24)) is an indoor high-voltage switchgear developed based on advanced vacuum arc-extinguishing technology. It is compatible with three-phase AC 50/60Hz, 24kV voltage levels and is widely used in the control and protection of various industrial enterprises, power plants, substations, and electrical facilities in China. It boasts core advantages such as compact structure, reliable operation, convenient maintenance, and strong weather resistance.

In medium-voltage power systems, the reliability of a circuit breaker depends not only on its interruption capability but also on the consistency of its operating mechanism, energy storage performance and electrical control response. The ZN85C-40.5 40.5kV Indoor Vacuum Circuit Breaker from Zhejiang Usune Electric Co., Ltd. is developed for three-phase AC 50Hz indoor power systems and is designed for industrial and mining enterprises, power plants and substations requiring reliable electrical control and protection.