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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Aspiring to become a successful tech business CEO, she is switching from chemical and mechanical engineering to computer science.

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It is easy for parking software to control because it involves switching electric motors on and off, rather than operating mechanical pumps.

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The mechanical prototype shown today is the next evolution of rack disaggregation with separate distributed switching functions.

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