Suitable for outdoor three-phase AC power distribution system with rated voltage of 12KV and rated frequency of 50HZ, used for on load current, on load current and off current.

It is suitable for the protection and control of substation, industrial and mining enterprises, urban and rural network, urban and rural network automatic distribution network and the place of frequent operation.

FZW28-12 vacuum load switch on column has the advantages of oil-free, simple mechanism, reliable performance and no maintenance, etc., so far, it has been widely used. The product is combined with FDR fault detector or RTU remote terminal unit and other equipment to form a very simple structure of the distribution automation system, which can realize the overhead line fault automatic location and fault section automatic isolation. In order to update the existing power distribution switch equipment in China, it is necessary to realize the transformation of power distribution equipment characterized by oil-free and automation.