{"schemaVersion":1,"slug":"fuse","name":"Fuse","kind":"symbol","abbreviation":"FU","aliases":["fuse link","fuse-link","fused protection","HFU1","VFU1"],"category":"power-distribution","drawingTypes":["SLD","Schematic"],"referenceFamilies":["IEC","IEEE / ANSI"],"summary":"An overcurrent protective element that interrupts a circuit by melting its fuse link.","description":["A fuse representation identifies a protective fuse link in a circuit. Its rating and operating characteristics are additional information: a generic fuse mark does not specify utilization category, current, voltage, breaking capacity or coordination with other protective equipment.","Fuses appear in main power circuits, transformer circuits and control supplies. Some assemblies add indication or auxiliary contacts. A drawing should distinguish the protective link from the holder, disconnect mechanism and any indication function."],"readingNotes":["Follow the protected circuit and identify how many fuse links are represented.","Treat associated indication contacts as separate schematic elements."],"drawingChecklist":["Reference the fuse type and rating.","Identify the holder or fuse-switch assembly when relevant.","Keep auxiliary indication and replacement information linked."],"distinction":"A fuse and a fused disconnector may share protective components, but the assembly also includes a switching or isolation function.","facts":[{"label":"Primary role","value":"Overcurrent protection"},{"label":"Selection data","value":"Type, voltage, current and breaking capacity"},{"label":"Assembly details","value":"Holder and switching functions are separate"},{"label":"Public Autodesk reference names","value":"HFU1, VFU1 (vendor identifiers, not IEC symbol IDs)"}],"references":[{"sourceId":"autodesk-fuses","relevance":"Public fuse, auxiliary-contact and indication categories."},{"sourceId":"switching-devices","relevance":"Manufacturer explanation of fuse categories."}],"related":["circuit-breaker","load-break-switch","terminal","voltage-transformer"],"artwork":"fuse","publishedOn":"2026-10-13","updatedOn":"2026-10-13","provenance":"independent-public-research","url":"https://eloragrid.ai/symbols/fuse","illustration":{"url":"https://eloragrid.ai/library/illustrations/fuse.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"autodesk-fuses","title":"Fuse and neutral-link symbols","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-E540AE83-CEE1-4CA9-B43C-B19004025EAA.htm","type":"cad-reference","scope":"Fuses, auxiliary contacts, indication and open/closed neutral-link variants.","checkedOn":"2026-10-13","reuse":"link-only","relevance":"Public fuse, auxiliary-contact and indication categories."},{"id":"switching-devices","title":"Elementary switching devices","publisher":"Schneider Electric — Electrical Installation Guide","url":"https://www.electrical-installation.org/enwiki/Elementary_switching_devices","type":"manufacturer","scope":"Explains disconnectors, load-break switches, contactors and fuses. The manufacturer diagrams remain at the source.","checkedOn":"2026-10-13","reuse":"link-only","relevance":"Manufacturer explanation of fuse categories."}]}