The VKY(VE)-12 series single-spring solid-sealed high-voltage vacuum circuit breaker is suitable for three-phase AC power systems with a rated voltage of 7.2~12kV and a frequency of 50Hz. It is widely used in power plants, substations, petrochemicals, metallurgy, manufacturing, airports, and residential areas for the protection and control of electrical facilities. It is particularly suitable for applications involving frequent operations under rated current or multiple interruptions of short-circuit currents. It can be installed in removable or fixed air-insulated switchgear. The product complies with relevant standards such as GB1984 "AC High-Voltage Circuit Breakers," DL/T403 "Technical Conditions for Ordering 12~40.5kV Indoor AC High-Voltage Circuit Breakers," and IEC60694, IEC6227-100.
The VKY(VE)-12 series single-spring solid-sealed high-voltage vacuum circuit breaker adopts advanced APG technology, directly encapsulating the vacuum interrupter and the main conductive circuit within an epoxy resin pole to form a solid-sealed insulation method. It represents the highest level of design and manufacturing in high-voltage vacuum circuit breakers worldwide.