second end 84 is connected to the pin contact 40 when the contacts 32 40 are open the pin contact 40 side is connected to the feeder which is grounded and voltage withstand need not be considered when the contacts 32 40 are closed and energized the pin contact 40 is insulated from the grounded actuating mechanism 38 by the insulated coupling rod 80 another feature of the present invention is an insulating seal ring 70 as shown in fig4 any medium or high voltage switch having an electrically grounded mechanism that is mechanically connected to and operates an energized contact must have an insulating barrier between the two to prevent flashover or creep the insulating barrier must maintain a continuous seal when the switch is actuated without interfering with the travel of the actuating mechanism of the switch by controlling the frictional interference level between the sealing surface of the ring and the rod the seal can be maintained over the entire travel of the rod this concept can be used in most types solid dielectric switches fig4 shows an insulating seal ring 70 for electrically insulating the movable energized contact 40 in the housing 12 of the high current switch 10 the insulating seal.