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Regarding level switches, what mode are the contacts in when relating to fluid?

April 26, 2017contacts fluid level mode relating switches

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Regarding level switches, what mode are the contacts in when relating to fluid?

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For those standard units that are N.C. this means in the presence of fluid the contacts will be closed. For those units with contacts N.O. this means in the presence of fluid the contacts will be open. All units will remain N.O. with no power applied.