{"schemaVersion":1,"slug":"surge-arrester","name":"Surge arrester","kind":"symbol","abbreviation":"SA","aliases":["HFU1_S00373","VFU1_S00373"],"category":"connections-wiring","drawingTypes":["SLD","Schematic"],"referenceFamilies":["IEC","Manufacturer"],"summary":"A surge arrester diverts a documented surge-related current through its protective path.","description":["A surge arrester diverts a documented surge-related current through its protective path. Its system connection, rating and earthing lead arrangement are essential drawing information."],"readingNotes":["Trace the protected conductor and discharge path independently.","The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation."],"drawingChecklist":["Identify protected circuit","State arrester ratings/type","Reference earth connection and placement"],"distinction":"A surge arrester limits overvoltage transients; it does not replace overcurrent interruption.","facts":[{"label":"Drawing role","value":"Earth or bonding role"},{"label":"Representation scope","value":"Functional concept; not an official standard graphic or a product footprint"},{"label":"Public vendor block reference","value":"HFU1_S00373, VFU1_S00373 (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-earthing-surge","relevance":"Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic."}],"related":["protective-earth","earthing-switch"],"artwork":"edu-surge-arrester","publishedOn":"2026-10-13","updatedOn":"2026-10-13","provenance":"independent-public-research","url":"https://eloragrid.ai/symbols/surge-arrester","illustration":{"url":"https://eloragrid.ai/library/illustrations/surge-arrester.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-earthing-surge","title":"AutoCAD Electrical: Earthing, sources and surge protection","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-1E3FDEAE-B4B2-417C-8075-108AA2C6E509.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."}]}