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What is meant by positivity or positive operation of limit switch ?

A limit switch complies to this specification when all the closed contact elements of the switch can be changed, with certainty, to the open position (no flexible link between the moving contacts and the operator of the switch, to which an actuating force is applied)

This enables the limitswitch to be used for safety applications as it esures the opening of the closed contact even if the contacts are welded .

This feature is indicated by the symbolin the limit switches catalog .

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