| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a switch device that has a simple mounting structure owing to a lightweight electric-field relaxation means and is excellent in manufacturability and assemblability without causing a cost increase. Ž<P>SOLUTION: The switch device such as a vacuum circuit breaker 10 includes electric-field relaxation means. The switch device is configured to use a conductive nonmetallic material, for example, such as a conductive resin material, a conductive rubber material, a resin material applied with conductive coating, and a rubber material or the like applied with conductive coating as the electric-field relaxation means 8, 8A. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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