The Allen-Bradley SENTROL 151-4Z-06K Guard Switch is a safety interlock switch used in machine guarding to detect the closed position of a protective door or shield. The model number is 151-4Z-06K, also listed as 151-4Z06K, and it sits within Allen-Bradley's SENTROL guard-switch family. It is designed for integration into safety control circuits to help verify that guards are in place before machinery can operate.
