{"schemaVersion":1,"slug":"relay-coil-with-rc-suppression","name":"Relay coil with RC suppression","kind":"symbol","abbreviation":"K RC","aliases":["HCR1K39","VCR1K39"],"category":"control-circuits","drawingTypes":["Schematic"],"referenceFamilies":["IEC","Manufacturer"],"summary":"A relay RC suppression network uses resistance and capacitance associated with the coil circuit.","description":["A relay RC suppression network uses resistance and capacitance associated with the coil circuit. It provides a documented transient-control function with characteristics distinct from diode suppression."],"readingNotes":["Confirm whether the RC module is internal, in the socket or separately wired.","The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation."],"drawingChecklist":["Show network location","State coil supply","Reference compatible suppression unit"],"distinction":"RC suppression and diode suppression are not interchangeable annotations for every supply type.","facts":[{"label":"Drawing role","value":"Relay operation"},{"label":"Representation scope","value":"Functional concept; not an official standard graphic or a product footprint"},{"label":"Public vendor block reference","value":"HCR1K39, VCR1K39 (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-relay-suppression","relevance":"Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic."},{"sourceId":"autodesk-contacts","relevance":"Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic."}],"related":["relay-coil","normally-open-contact"],"artwork":"edu-relay-coil-with-rc-suppression","publishedOn":"2026-10-13","updatedOn":"2026-10-13","provenance":"independent-public-research","url":"https://eloragrid.ai/symbols/relay-coil-with-rc-suppression","illustration":{"url":"https://eloragrid.ai/library/illustrations/relay-coil-with-rc-suppression.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-relay-suppression","title":"AutoCAD Electrical: Relay suppression components","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-AF7C83A4-33F4-4144-94BE-4C5F2F448FB8.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."},{"id":"autodesk-contacts","title":"Relays and contacts: public symbol reference","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-011C62B8-9EC8-485C-B47D-B22A3F7B7574.htm","type":"cad-reference","scope":"Normally open, normally closed and changeover contacts, relay coils and latching relay variants.","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."}]}