{"schemaVersion":1,"slug":"poe-power-sourcing-interface","name":"PoE power-sourcing interface","kind":"symbol","abbreviation":"PoE PSE","aliases":["PoE power-sourcing interface","PoE power-sourcing interface functional block","PoE power-sourcing interface schematic reference"],"category":"installation-communications","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"A PoE power-sourcing interface manages the supply end of a compatible powered Ethernet connection.","description":["A PoE power-sourcing interface manages the supply end of a compatible powered Ethernet connection.","A selected network switch can provide power to a recognised powered device through its PoE port.","Locate this function at the end providing power to the cable. Show detection and power control separately from the Ethernet data function. A port must use its selected PoE arrangement rather than simply placing a supply across arbitrary network conductors. This is original functional artwork, not a certified standard graphic or device pinout."],"readingNotes":["Identify the sourcing port and intended powered device.","Reference the supported classification and power-budget arrangement.","Show protection and port-control connections from the selected design.","A sourcing port's class and power capability must match the complete link and connected device."],"drawingChecklist":["Identify the sourcing port and intended powered device.","Reference the supported classification and power-budget arrangement.","Show protection and port-control connections from the selected design."],"distinction":"A sourcing port's class and power capability must match the complete link and connected device.","facts":[{"label":"Representation type","value":"Original functional block; not a certified IEC or IEEE graphic"},{"label":"Concept input","value":"Port power supply"},{"label":"Concept output","value":"Compatible powered cable link"}],"references":[{"sourceId":"expansion-20261027-poe","relevance":"Power over Ethernet interfaces: public technical context for the named function. Product and compliance details remain with the publisher."}],"related":["ga-industrial-ethernet-switch","poe-powered-device-interface","power-converter","terminal"],"artwork":"expanded-poe-power-sourcing-interface","publishedOn":"2026-10-27","updatedOn":"2026-10-27","provenance":"independent-public-research","plainEnglish":{"title":"What does PoE power-sourcing interface mean?","introduction":"A PoE power-sourcing interface manages the supply end of a compatible powered Ethernet connection.","example":"A selected network switch can provide power to a recognised powered device through its PoE port.","drawings":"Locate this function at the end providing power to the cable. Show detection and power control separately from the Ethernet data function. A port must use its selected PoE arrangement rather than simply placing a supply across arbitrary network conductors.","terms":[{"name":"PSE","meaning":"Power-sourcing equipment, the supplying end of a PoE connection."},{"name":"Power budget","meaning":"The available power allocated across the selected ports and operating conditions."}],"diagram":"flow","caption":"Original functional explanation. Arrows show information or energy roles; two-headed arrows identify two-way interfaces. This is not a pinout, certified standards graphic or complete circuit.","sources":[{"label":"Power over Ethernet interfaces","url":"https://www.ti.com/product-category/power-management/power-over-ethernet-ics/overview.html"}],"profileId":"researched-functional-reference","checklist":["Identify the sourcing port and intended powered device.","Reference the supported classification and power-budget arrangement.","Show protection and port-control connections from the selected design."],"questions":[{"question":"Does a PoE-capable port guarantee enough power for every device?","answer":"No. The source, receiver, cable and negotiated operating conditions must be compatible. A device’s full operating demand and the source’s available budget require their own checks."}],"steps":["Port power supply","Power-sourcing interface","Compatible powered cable link"],"bidirectional":false},"url":"https://eloragrid.ai/symbols/poe-power-sourcing-interface","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/poe-power-sourcing-interface.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"expansion-20261027-poe","title":"Power over Ethernet interfaces","publisher":"Texas Instruments","url":"https://www.ti.com/product-category/power-management/power-over-ethernet-ics/overview.html","type":"manufacturer","scope":"Public functional documentation. Original explanatory text and educational block artwork; no publisher graphics or files reproduced.","checkedOn":"2026-10-27","reuse":"link-only","relevance":"Power over Ethernet interfaces: public technical context for the named function. Product and compliance details remain with the publisher."}]}