| 摘要 |
PROBLEM TO BE SOLVED: To provide a DC switch capable of preventing a loss due to a semiconductor switch element from being generated in a closed state and of completely opening between contacts in an open state, even if a semiconductor switch element is used. ! SOLUTION: A negative electrode side contact part 12 comprises: a negative electrode side fixed contact 12a arranged on the power supply side of a cable way L; a negative electrode side movable contact 12b arranged on the load side; and an intermediate contact 12c arranged so as to be held by both the contacts. The intermediate contact 12c and the load side of the positive electrode side contact part 11 are connected with each other via a semiconductor switch element M1. A switch element 13 for turning on/off the first semiconductor switch element M1, is provided. While the positive electrode side contact part 11 and the negative electrode side contact part 12 are in an on state, the first semiconductor switch element M1 is also kept in an on state. |
