Vacuum interrupter

A vacuum interrupter, comprising:

• at least one pair of substantially disk-shaped main electrodes disposed in a vacuum vessel so as to be movable toward and away from each other, said main electrodes generating an arc current when moved away from each other;
• rods extending out of said vacuum vessel from rear surfaces of said main electrodes, respectively;
• and
• a cylindrical coil electrode means electrically connected between the rear surface of both of said main electrodes providing an axial magnetic field to diffuse the arc current between said main electrodes, said cylindrical coil electrode means including:
• a cylindrical body having a first opening at a first end, and a central opening at a second end, said first end electrically connected to said main electrode, and said second end electrically connected to said rod;
• a plurality of electrical connections provided between an edge surface along the first opening of said cylindrical body and said main electrodes;
• a plurality of inclined slits communicating at one end thereof with the central opening at the second end of said cylindrical body and said slits extending to the edge surface of said cylindrical body;
• wherein the inclined slits on the first cylindrical coil electrode means are generally parallel to the inclined slits on the second cylindrical coil electrode means attached to the other of said pair of said main electrodes.