{"schemaVersion":1,"slug":"three-position-maintained-selector","name":"Three-position maintained selector","kind":"symbol","abbreviation":"SEL 3 HOLD","aliases":["HSS113","VSS113"],"category":"control-circuits","drawingTypes":["Schematic"],"referenceFamilies":["IEC","Manufacturer"],"summary":"A three-position maintained selector stays at the selected position until manually moved.","description":["A three-position maintained selector stays at the selected position until manually moved. The schematic needs a contact-state schedule covering all three positions so modes such as local, off and remote are unambiguous."],"readingNotes":["Read each contact against the complete position table rather than the operator label alone.","The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation."],"drawingChecklist":["Name all positions","Provide contact-state table","Cross-reference terminal numbers"],"distinction":"Three maintained positions differ from a selector that spring-returns to centre.","facts":[{"label":"Drawing role","value":"Position selection"},{"label":"Representation scope","value":"Functional concept; not an official standard graphic or a product footprint"},{"label":"Public vendor block reference","value":"HSS113, VSS113 (Autodesk identifiers; not IEC symbol numbers)"},{"label":"Identifier status","value":"The short label is a functional lookup label, not an assigned IEC or IEEE symbol number. Any separately listed Autodesk code is a verified vendor block name."}],"references":[{"sourceId":"pub-symbol-selector-three","relevance":"Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic."}],"related":["selector-switch","changeover-contact"],"artwork":"edu-three-position-maintained-selector","publishedOn":"2026-10-13","updatedOn":"2026-10-13","provenance":"independent-public-research","url":"https://eloragrid.ai/symbols/three-position-maintained-selector","illustration":{"url":"https://eloragrid.ai/library/illustrations/three-position-maintained-selector.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"pub-symbol-selector-three","title":"AutoCAD Electrical: Three-position selectors","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-D8675B9D-9CBF-4B7F-8F09-2444779614D0.htm","type":"cad-reference","scope":"Public vendor catalogue naming and functional variants. Vendor block names are not IEC identifiers. Linked for reference; no graphics or CAD files are redistributed.","checkedOn":"2026-10-13","reuse":"link-only","relevance":"Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic."}]}