Key Operated

Sentrol Industrial Key-Operated Safety Switches utilize a removable stainless steel key to provide a positive means of turning the control power off should an access panel, door, gate, guard, etc. be opened during machine operation. When the key is removed from the switch, the normally closed contacts are mechanically forced open. This opens the safety circuit turning off the control power in the machine - disabling the machine. Since the switch contacts can only be closed when the key is installed in the switch, the machine cannot be re-started until the door, gate, guard, etc. is closed.

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