{"schemaVersion":1,"slug":"breaker-controlled-switching-interface","name":"Breaker controlled-switching interface","kind":"symbol","abbreviation":"BCI","aliases":["Switching-device operating references","switchgear Switching-device operating references","switchgear","Switchgear","System waveforms and breaker timing","Timed operating command"],"category":"control-circuits","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"Identifies timing coordination between a switching controller and the breaker operating command.","description":["Identifies timing coordination between a switching controller and the breaker operating command. A switching-device operating reference adds the specific mechanism or duty context needed to interpret its place in a power circuit. The same basic switching outline can serve different equipment constructions, so the added description must remain attached to its device tag.","In a medium-voltage switchgear drawing, the operating reference helps the reader distinguish the interrupting device from its isolation, earthing and auxiliary-control interfaces. For this reference, the drawing identifies “System waveforms and breaker timing” at the input and “Timed operating command” at the output. Controlled switching requires a validated equipment application.","Use the device schedule for its actual construction, operating duty and ratings. These original functional illustrations describe the named role and do not certify a standard glyph or product footprint. 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: System waveforms and breaker timing. Identify its source device or document and the state represented on the drawing.","Follow the named output: Timed operating command. Cross-reference its destination and separate the command from confirmation that the equipment responded.","Controlled switching requires a validated equipment application.","Use the device schedule for its actual construction, operating duty and ratings. These original functional illustrations describe the named role and do not certify a standard glyph or product footprint."],"drawingChecklist":["Label the source and connection reference for system waveforms and breaker timing.","Identify the destination and defined state of timed operating command.","Record the equipment or control-document revision supporting this functional block.","Check this application limit in the project design: Controlled switching requires a validated equipment application."],"distinction":"Controlled switching requires a validated equipment application. 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":"Switchgear"},{"label":"Input / boundary","value":"System waveforms and breaker timing"},{"label":"Output / connection","value":"Timed operating command"},{"label":"Lookup label","value":"BCI is a library lookup label, not a standard device designation."}],"references":[{"sourceId":"pi26-breaker-products","relevance":"Public technical context for switching-device operating references. Circuit-breaker construction and interruption families. The application text and educational graphic are independently authored; the publisher does not certify this representation."}],"related":["circuit-breaker","disconnector","vacuum-interrupter-breaker-reference"],"artwork":"pi26-breaker-controlled-switching-interface","publishedOn":"2026-11-03","updatedOn":"2026-11-03","provenance":"independent-public-research","representation":{"type":"functional-block","focus":"switchgear","family":"device-functions","input":"System waveforms and breaker timing","output":"Timed operating command"},"plainEnglish":{"title":"What this block does","introduction":"Identifies timing coordination between a switching controller and the breaker operating command.","example":"In a medium-voltage switchgear drawing, the operating reference helps the reader distinguish the interrupting device from its isolation, earthing and auxiliary-control interfaces. For this reference, the drawing identifies “System waveforms and breaker timing” at the input and “Timed operating command” at the output. Controlled switching requires a validated equipment application.","drawings":"Start at the named input: System waveforms and breaker timing. Identify its source device or document and the state represented on the drawing. Follow the named output: Timed operating command. Cross-reference its destination and separate the command from confirmation that the equipment responded.","terms":[{"name":"Input","meaning":"System waveforms and breaker timing"},{"name":"Output","meaning":"Timed operating command"},{"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":["System waveforms and breaker timing","BCI","Timed operating command"],"caption":"A reading guide. The entry's original illustration and input/output facts describe this application.","sources":[{"label":"High-voltage circuit breakers","url":"https://www.siemens-energy.com/global/en/home/products-services/product-offerings/circuit-breakers.html"}],"profileId":"power-installation-device-functions"},"url":"https://eloragrid.ai/symbols/breaker-controlled-switching-interface","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/breaker-controlled-switching-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-breaker-products","publisher":"Siemens Energy","title":"High-voltage circuit breakers","url":"https://www.siemens-energy.com/global/en/home/products-services/product-offerings/circuit-breakers.html","scope":"Circuit-breaker construction and interruption families.","type":"manufacturer","checkedOn":"2026-11-03","reuse":"link-only","relevance":"Public technical context for switching-device operating references. Circuit-breaker construction and interruption families. The application text and educational graphic are independently authored; the publisher does not certify this representation."}]}