We are specialists in manufacturing and supplying of Ring Main Units 11KV RMU. Offered product is highly appreciated among our customers for their work performance, product quality, capable of with high work load and long serving service. The arc is rapidly extinguished because the metallic vapours, electrons and ions produced during arc rapidly condense on the surface of the circuit breaker contacts, resulting in rapid recovery of dielectric strength. At the opening of contacts vacuum, an arc is produced between the contacts by the ionization of metal vapour of contacts. Additionally, we offer them at markets best prices.