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单词 Snap action switch
释义

Snap action switch

英语百科

Miniature snap-action switch

Comparison of some different switches.
2 different microswitches
The internals of a micro switch.  Contacts, from left to right, are common, normally open, and normally closed.

A miniature snap-action switch, also trademarked and frequently known as a micro switch, is an electric switch that is actuated by very little physical force, through the use of a tipping-point mechanism, sometimes called an "over-center" mechanism.

Switching happens reliably at specific and repeatable positions of the actuator, which is not necessarily true of other mechanisms. They are very common due to their low cost and durability, greater than 1 million cycles and up to 10 million cycles for heavy duty models. This durability is a natural consequence of the design.

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更新时间:2025/6/16 21:40:30