Abstract: The vacuum switch includes a ceramic and metal housing having a metal body portion with a generally T-shaped cross-section forming three ends. Ceramic insulators are brazed on each of the three ends with the insulators being closed by metal end members. A first end receives a stationary conductor with the opposite second end reciprocably receiving an actuator member. A second stationary conductor is disposed at the third end transversely of the axis of the first stationary conductor. The first conductor includes a stationary switch contact disposed on its terminal end. A moveable switch contact is disposed on the terminal end of the actuator member. The second stationary conductor includes a flexible cantilever beam extending therefrom and received within an aperture in the actuator member for the moveable switch contact.

Abstract: A cylindrical coil conductor incorporated in a vacuum interrupter comprises a cylindrical body with a plurality of inclined slits therein defining a plurality of current paths. The coil conductor is uniformly cylindrical to reduce radial magnetic fields, which tend to cancel the axial magnetic field generated by the coil conductor. The cylindrical coil conductor electrically connects to the rear surface of a main electrode through a copper ring to maintain current on the periphery of the main electrode. The front surface of the main electrode includes a ring-shaped protrusion to define a point of contact with an opposite main electrode. Current flows into the protrusion, through the main electrode to the copper ring, thereby defining a short current path with a minimal resistance.

Abstract: A cylindrical coil conductor incorporated in a vacuum interrupter comprises a cylindrical body with a plurality of inclined slits therein defining a plurality of current paths. The coil conductor is uniformly cylindrical to reduce radial magnetic fields, which tend to cancel the axial magnetic field generated by the coil conductor. The cylindrical coil conductor electrically connects to a conductor disk and to a main electrode and the conductor disk electrically connects to a conductor rod. A support rod attaches to the main electrode and extends through the coil conductor and conductor disk to reduce mechanical stress on the coil conductor. A second cylindrical coil conductor is mounted in an opposing manner with inclined slits defining current paths in parallel to the slits in the first coil conductor. The current paths in the two coil conductors comprise one-turn current flow generating a uniform axial magnetic field to permit uniform distribution of the arc current between the main electrodes.

Abstract: A cylindrical coil electrode (10) incorporated in a vacuum interrupter comprises a cylindrical body (12) having an opening at one end thereof, three electrical connectors (16) provided between the edge surface (15) of the opening of the cylindrical body and a main electrode (11). A second cylindrical coil electrode having slits parallel to said first cylindrical coil electrode is mounted in an opposing manner. Because of the above structure, one-turn current flow throughout the current paths so that a uniform axial magnetic field is applied to the main electrode, and an arc current can be uniformly distributed over the entire surface of the main electrode, thereby improving the current interruption performance of the vacuum interrupter.