Are Limit Switches Obsolete?


Being the “product guy” for mechanical or limit switches I am often told that I have the obsolete products. Well I am here to say that mechanicals are still around and definitely have their place in automation.

Mechanical switches, at least the ones I deal with, are precision limit switches. How can a mechanical switch be a precise device? These switches use a cam or trip dog and once the switch and cam are secured in the application, the repeatability, with a chisel plunger, can be .002mm – that’s two microns. Applications for these switches include actuators for automatic controls, positioning and end of travel for machine tools, transfer lines, transport equipment, and gantries.

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