Hubbell 2210-133CC13 pilot duty speed switch NEVER USED

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For sale is a Hubbell 2210-133CC13, SN 330146, Instruction Sheet SK-2210-1A, pilot suty speed switch. My guess is that it closes contacts when its rotor reaches a certain rotational speed, but my guess is as good as yours. Seems to be used mostly for switching relays or valves, not motors.


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