Sealed contact device

摘要

A sealed contact device includes a sealed contact section (AA) having a sealed container (1) defining therein a gas-tight space together with a bellows for housing therein electrodes and sealing therein a gas preferably consisting mainly of hydrogen, the electrodes including fixed electrodes and movable electrodes engageable with and separable from the fixed electrodes, a contact pressure spring biasing the movable electrodes in engaging direction with respect to the fixed electrodes, a resetting spring biasing the movable electrodes in separating direction from the fixed electrodes, and a movable shaft (7) projected at an end out of the sealed container (1) and coupled at the other end to the movable electrodes; a driving member (BB) providing at a movable part a drive force for driving the movable shaft (7) in the direction of engaging the electrodes; and a relaying member (CC) interposed between the movable shaft (7) of the sealed contact section and the movable part of the driving member (BB) and having a regulating element for regulating driving position of the movable shaft, the relaying member (CC) being coupled to the movable part and including a coupling element coupled through the regulating element to the movable shaft (7).