Mechanical switching device capable of making, carrying and breaking currents in normal circuit conditions and, when specified, in given operating overload conditions.
能接通、承载和分断正常电路条件下的电流,也能在规定的非正常条件(例如短路条件)下接通、承载一定时间和分断电流的一种机械开关电器。
Mechanical switching device capable of making, carrying and breaking currents in normal circuit conditions and, when specified, in given operating overload conditions.
能接通、承载和分断正常电路条件下的电流,也能在规定的非正常条件(例如短路条件)下接通、承载一定时间和分断电流的一种机械开关电器。
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