| 摘要 |
PROBLEM TO BE SOLVED: To obtain a switch device with high switching property and reliability, having heightened response and switching force, breaking respective phases of power lines separately. SOLUTION: By arranging a movable coil between an electrode connecting fixed coil and an electrode disconnecting coil of each operation system of a switch unit for respective phases, and connecting a driving power source separately to respective switch units, and making switch parts for respective phases connect and disconnect independently from each other, a transient voltage and current generated at the time of switching is enabled to restrain, consumption of respective switch part is reduced, and reliability is improved.
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