{"schemaVersion":1,"slug":"switchroom-service-socket-residual-current-interface","name":"Switchroom service-socket residual-current interface","kind":"symbol","abbreviation":"SSRI","aliases":["Switchroom auxiliary AC distribution","switchrooms Switchroom auxiliary AC distribution","switchrooms","Switchrooms","Service-socket circuit condition","Socket circuit protective action"],"category":"installation-communications","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"Identifies residual-current protection assigned to the documented room service-socket circuit.","description":["Identifies residual-current protection assigned to the documented room service-socket circuit. An auxiliary AC distribution diagram identifies the supplies serving room services and control-support equipment. Essential, backed-up and ordinary circuits can have different source paths and operating priorities.","In a switchroom, the lighting, service sockets, charger input and room cooling may be fed from different auxiliary branches. A source change must preserve the identities of loads that require continuity. For this reference, the drawing identifies “Service-socket circuit condition” at the input and “Socket circuit protective action” at the output. Required protection depends on installation rules.","Label source, branch protection and load purpose. The arrangement does not establish conductor sizes, protection settings or installation compliance; it links the operating role to the selected equipment schedule. The functional block is an independent explanation of this named application. Equipment-specific ratings, terminal connections and operating conditions must be established in the project documentation."],"readingNotes":["Start at the named input: Service-socket circuit condition. Identify its source device or document and the state represented on the drawing.","Follow the named output: Socket circuit protective action. Cross-reference its destination and separate the command from confirmation that the equipment responded.","Required protection depends on installation rules.","Label source, branch protection and load purpose. The arrangement does not establish conductor sizes, protection settings or installation compliance; it links the operating role to the selected equipment schedule."],"drawingChecklist":["Label the source and connection reference for service-socket circuit condition.","Identify the destination and defined state of socket circuit protective action.","Record the equipment or control-document revision supporting this functional block.","Check this application limit in the project design: Required protection depends on installation rules."],"distinction":"Required protection depends on installation rules. This reference describes the named application; it does not establish a new IEC graphical symbol, an ANSI device-function number or an exact manufacturer connection diagram.","facts":[{"label":"Representation","value":"Functional block"},{"label":"Installation focus","value":"Switchrooms"},{"label":"Input / boundary","value":"Service-socket circuit condition"},{"label":"Output / connection","value":"Socket circuit protective action"},{"label":"Lookup label","value":"SSRI is a library lookup label, not a standard device designation."}],"references":[{"sourceId":"pi26-station-power","relevance":"Public technical context for switchroom auxiliary ac distribution. Independent AC and DC sources for station auxiliary power. The application text and educational graphic are independently authored; the publisher does not certify this representation."}],"related":["ga-panel-service-outlet","ac-uninterruptible-power-supply","portable-equipment-service-supply-boundary"],"artwork":"pi26-switchroom-service-socket-residual-current-interface","publishedOn":"2026-11-03","updatedOn":"2026-11-03","provenance":"independent-public-research","representation":{"type":"functional-block","focus":"switchrooms","family":"room-ac","input":"Service-socket circuit condition","output":"Socket circuit protective action"},"plainEnglish":{"title":"What this block does","introduction":"Identifies residual-current protection assigned to the documented room service-socket circuit.","example":"In a switchroom, the lighting, service sockets, charger input and room cooling may be fed from different auxiliary branches. A source change must preserve the identities of loads that require continuity. For this reference, the drawing identifies “Service-socket circuit condition” at the input and “Socket circuit protective action” at the output. Required protection depends on installation rules.","drawings":"Start at the named input: Service-socket circuit condition. Identify its source device or document and the state represented on the drawing. Follow the named output: Socket circuit protective action. Cross-reference its destination and separate the command from confirmation that the equipment responded.","terms":[{"name":"Input","meaning":"Service-socket circuit condition"},{"name":"Output","meaning":"Socket circuit protective action"},{"name":"Application reference","meaning":"An explanation of a named drawing function or circuit relationship; the project documents define the equipment and its connections."}],"diagram":"flow","steps":["Service-socket circuit condition","SSRI","Socket circuit protective action"],"caption":"A reading guide. The entry's original illustration and input/output facts describe this application.","sources":[{"label":"SEL-RPM redundant power module","url":"https://selinc.com/products/RPM/"}],"profileId":"power-installation-room-ac"},"url":"https://eloragrid.ai/symbols/switchroom-service-socket-residual-current-interface","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/switchroom-service-socket-residual-current-interface.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"pi26-station-power","publisher":"SEL","title":"SEL-RPM redundant power module","url":"https://selinc.com/products/RPM/","scope":"Independent AC and DC sources for station auxiliary power.","type":"manufacturer","checkedOn":"2026-11-03","reuse":"link-only","relevance":"Public technical context for switchroom auxiliary ac distribution. Independent AC and DC sources for station auxiliary power. The application text and educational graphic are independently authored; the publisher does not certify this representation."}]}