| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a compact and economical grounding switch by reducing the diameter of a branch case branched from a tank. SOLUTION: Movable electrodes 4a and 4c for both phases are formed in a Z shape, and the pole space close to movable contacts 3a, 3b and 3c is smaller than the pole space close to fixed contact parts 2a, 2b and 2c. A joining member 7 is connected to movable electrodes 4a, 4b and 4c in an insulating manner so that contact/separation is performed collectively for the three phases. A notched part 19 for allowing the joining member 7 to pass through is formed in the movable contact parts 3a, 3b and 3c. In addition, the joining member 7 is joined with a screw driving part 8, and the movable electrodes 4a, 4b and 4c are screw-driven.</p> |
