{"schemaVersion":1,"slug":"iec-mechanical-stop-latch-in-engaged-state","name":"Mechanical stop latch in engaged state","kind":"symbol","abbreviation":"Q021210","aliases":["Mechanical stop latch in engaged state symbol","Q021210","Mechanical stop latch in engaged state IEC reference","Q021212"],"category":"control-circuits","drawingTypes":["Schematic"],"referenceFamilies":["IEC","Manufacturer"],"summary":"This form identifies an engaged stop-latch mechanism.","description":["This form identifies an engaged stop-latch mechanism. The state describes mechanical retention. The affected device can have separate electrical contacts reporting that position, so engagement is not equivalent to energisation.","State which movement is restrained and what documented release action changes the condition. Where feedback is used, cross-reference its actual contact rather than treating the latch mark as an electrical output."],"readingNotes":["State which movement is restrained and what releases the latch.","An engaged latch does not automatically indicate a circuit is energised."],"drawingChecklist":["Identify the associated device, circuit or diagram boundary.","State which movement is restrained and what releases the latch.","Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form."],"distinction":"An engaged latch does not automatically indicate a circuit is energised.","facts":[{"label":"Reference scope","value":"Specific public IEC-context family form"},{"label":"Publisher reference token","value":"Q021210, Q021212 (Autodesk tokens; not verified IEC database IDs)"},{"label":"Information added","value":"State which movement is restrained and what releases the latch."},{"label":"Preview","value":"Independent educational concept; consult the publisher and applicable standard for the exact graphic"}],"references":[{"sourceId":"iec-public-mechanical","relevance":"Official public publisher family name and reference context; vendor identifiers and graphics are distinct from licensed IEC database content."},{"sourceId":"iec-public-latch","relevance":"Public alternate engaged/neutral latching-device tokens are consolidated with the matching mechanical state concept."}],"related":["relay-coil","normally-open-contact"],"artwork":"edu-iec-mechanical-stop-latch-in-engaged-state","publishedOn":"2026-10-14","updatedOn":"2026-10-14","provenance":"independent-public-research","symbolVariant":{"convention":"IEC","form":"Mechanical stop latch in engaged state","reference":"Autodesk IEC-60617 Symbol Preview — Mechanical return and interlock qualifiers; vendor family reference, not certified IEC geometry or database identifier."},"url":"https://eloragrid.ai/symbols/iec-mechanical-stop-latch-in-engaged-state","illustration":{"url":"https://eloragrid.ai/library/illustrations/iec-mechanical-stop-latch-in-engaged-state.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"iec-public-mechanical","title":"Autodesk IEC-60617 preview: Mechanical return and interlock qualifiers","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-084BF99C-FD3E-4ECF-A86B-608EF93DF6E5.htm","type":"cad-reference","scope":"Public publisher IEC-context family names and vendor block references. No vendor images or CAD library files are reproduced, and vendor tokens are not presented as verified IEC database identifiers.","checkedOn":"2026-10-14","reuse":"link-only","relevance":"Official public publisher family name and reference context; vendor identifiers and graphics are distinct from licensed IEC database content."},{"id":"iec-public-latch","title":"Autodesk IEC-60617 preview: Latching-device qualifiers","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-9FC7824E-1A3B-4B47-B157-590CB8AE62FC.htm","type":"cad-reference","scope":"Public publisher IEC-context family names and vendor block references. No vendor images or CAD library files are reproduced, and vendor tokens are not presented as verified IEC database identifiers.","checkedOn":"2026-10-14","reuse":"link-only","relevance":"Public alternate engaged/neutral latching-device tokens are consolidated with the matching mechanical state concept."}]}