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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Single phase motors are protected against both high operating temperatures and high current by a built in, automatically resetting thermal overload.

在高温、高电流运行的情况下，单相电机都受到一个内置式、自动重置热过载保护装置的保护。

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For force transducers without built-in overload protection, the limiting force and operating force are identical.

对于没有过载保护的力转换器，极限力和操作力是一样的。

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