🌐EnglishEnglishDeutschفارسیEntityQ1719216· pop 5· linked from 6 articlestrapped-key interlockingAlso known as trapped-key interlock systemuse of locks and keys for sequential control of equipment and machinery to ensure safe operationWikidata factsImageTrapped key interlock transfer block.JPGvia Wikidata · CC0Available in 4 languagesDeutschCzechفارسیvia Wikidata sitelinks · CC0ConnectionslockEntityInternational Standard Book NumberEntityCategoriesOccupational safety and healthSafety engineering