Patent ID: 7479610

Claim:
An insulating part for a high voltage switch of a metal-enclosed circuit-breaker system which is executed as a pressure-gelated casting on the base of a polymeric composite material and which comprises a base-plate with a centrally arranged large through-hole for receiving a current terminal lead of the high voltage switch and with small through-holes for receiving fastening screws, in which the large through-hole and the small through-holes are extended from a first to a second side of the base-plate, wherein the first side is provided for exposure to the interior of the metal encapsulation, two bearing blocks for receiving a shaft of a movable contact of a contact arrangement of the switch, which bearing blocks are arranged on the first side of the base-plate, and at least a first collar which surrounds the large through-hole and which is arranged on the first or the second side of the base-plate.