{"schemaVersion":1,"slug":"three-wire-inductive-proximity-switch","name":"Three-wire inductive proximity switch","kind":"symbol","abbreviation":"PROX IND 3W","aliases":["HPX11IN3","VPX11IN3"],"category":"control-circuits","drawingTypes":["Schematic"],"referenceFamilies":["IEC","Manufacturer"],"summary":"A three-wire inductive proximity switch uses separate supply, common and output conductors.","description":["A three-wire inductive proximity switch uses separate supply, common and output conductors. Its output polarity and load connection must match the receiving input module."],"readingNotes":["Follow the output common and receiving input polarity together.","The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation."],"drawingChecklist":["Name three terminals","State PNP or NPN as specified","Reference PLC input compatibility"],"distinction":"Three-wire construction describes wiring; NO or NC describes the output's documented switching behaviour.","facts":[{"label":"Drawing role","value":"Actuated indication"},{"label":"Representation scope","value":"Functional concept; not an official standard graphic or a product footprint"},{"label":"Public vendor block reference","value":"HPX11IN3, VPX11IN3 (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-inductive-sensors","relevance":"Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic."}],"related":["plc-io","normally-open-contact"],"artwork":"edu-three-wire-inductive-proximity-switch","publishedOn":"2026-10-13","updatedOn":"2026-10-13","provenance":"independent-public-research","url":"https://eloragrid.ai/symbols/three-wire-inductive-proximity-switch","illustration":{"url":"https://eloragrid.ai/library/illustrations/three-wire-inductive-proximity-switch.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-inductive-sensors","title":"AutoCAD Electrical: Inductive proximity switches","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-596652AB-6555-4F9A-B575-555D40C2ECD4.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."}]}