{"schemaVersion":1,"slug":"spark-gap-protective-element","name":"Spark-gap protective element","kind":"symbol","abbreviation":"SPARK GAP","aliases":["HFU1_S00371","VFU1_S00371"],"category":"connections-wiring","drawingTypes":["SLD","Schematic"],"referenceFamilies":["IEC","Manufacturer"],"summary":"A spark-gap element provides a documented breakdown path across separated electrodes.","description":["A spark-gap element provides a documented breakdown path across separated electrodes. Its drawing identifies the protective location without implying the same behaviour as a semiconductor clamp."],"readingNotes":["Read the gap and protection characteristics from the actual device documentation.","The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation."],"drawingChecklist":["Identify connected points","Reference protection rating","Show discharge path"],"distinction":"A spark-gap element and a varistor use different protective mechanisms.","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_S00371, VFU1_S00371 (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-spark-gap-protective-element","publishedOn":"2026-10-13","updatedOn":"2026-10-13","provenance":"independent-public-research","url":"https://eloragrid.ai/symbols/spark-gap-protective-element","illustration":{"url":"https://eloragrid.ai/library/illustrations/spark-gap-protective-element.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."}]}