Classifications of vacuum interrupters for circuit breakers:

       【1.14KV】    【12KV】      【24KV】      【40.5KV】      【72.5KV】

     Description of Model:

       Vacuum circuit breakers (VCBs for short), which are capable to break short-circuit current, are frequently used as overload and short-circuit protection units in circuits or electric facilities. Since VCBs are characterized by its narrow contact gap, short arcing time, slight welding in breaking fault current, less energy and fast operating speed, they are considered as an ideal replacement both for oil breaks and SF6 insulated breakers. These switchgears with VCBs are still featured in compact size, light weight, minimized maintenance, fire and explosion proof and quietness, and VCBs are therefore extensively applied to power distribution systems in electricity, metallurgy and communications. Vacuum interrupters, however, as the most important part determine its performance.

         Main technical data is: rated voltage ranging from 1.14KV to 72.5KV; rated current ranging from 630A to 5000A; rated short circuit    breaking current ranging from 12.5KA to 80KA; 20 to 50 operations of breaking short circuit current. Our vacuum interrupters are designed to operate under GB1984-2003 or E2 level of IEC62271-100 standards.