| 摘要 |
A grounding switch which includes a resistance contact unit and a short circuiting contact unit accommodated in a single sheath or casing. A movable contact of the short circuiting contact unit is connected to a movable contact of the resistance contact unit and a fixed contact of the short circuiting contact unit is grounded. A resistor is connected between the movable contact of the resistance contact unit and fixed contact of the short circuiting contact and is temporarily inserted into a main power circuit when the resistance contact unit is closed. The resistance contact unit and resistor are arranged on parallel axes in the same sheath. |
