In the present invention, a connector pin assembly for a high voltage (hv) connector used to connect a high voltage (hv) power supply to a cathode assemble of an X-ray tube is provided. The pin connector assembly includes a conductive outer cylinder adapted to be connected to a hv power supply, a conductive inner cylinder located at least partially within the outer cylinder, a biasing member disposed within the inner cylinder, a conductive plunger slidably disposed within and engaged with the inner cylinder and the biasing member and a non-conductive member disposed within the inner cylinder, the non-conductive member operable to restrict a current flowing through the connector pin along a path from the outer cylinder through the inner cylinder to the plunger, without contacting the biasing member.