{"schemaVersion":1,"slug":"protection-trip-distribution-matrix","name":"Protection trip distribution matrix","kind":"symbol","abbreviation":"PTDM","aliases":["Breaker trip circuits","switchgear Breaker trip circuits","switchgear","Switchgear","Protection initiations","Selected breaker trip outputs"],"category":"control-circuits","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"Routes each protection initiation to the breakers assigned to the affected protection zone.","description":["Routes each protection initiation to the breakers assigned to the affected protection zone. A trip circuit carries an opening request from a control or protection device to the breaker operating mechanism. The opening command, the coil supply and the evidence that the breaker opened are separate parts of the drawing.","In a switchgear incomer panel, a protection relay requests opening and an auxiliary contact reports the resulting breaker position. A second trip path can have its own supply and wiring so that a single wiring fault does not remove both paths. For this reference, the drawing identifies “Protection initiations” at the input and “Selected breaker trip outputs” at the output. Every destination requires a defined zone assignment.","Trace the initiating contact, protective fuse, trip coil, return conductor and feedback independently. Identify which elements are shared between redundant paths. The diagram explains the intended command path; coil ratings and terminal numbers come from the selected breaker. 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: Protection initiations. Identify its source device or document and the state represented on the drawing.","Follow the named output: Selected breaker trip outputs. Cross-reference its destination and separate the command from confirmation that the equipment responded.","Every destination requires a defined zone assignment.","Trace the initiating contact, protective fuse, trip coil, return conductor and feedback independently. Identify which elements are shared between redundant paths. The diagram explains the intended command path; coil ratings and terminal numbers come from the selected breaker."],"drawingChecklist":["Label the source and connection reference for protection initiations.","Identify the destination and defined state of selected breaker trip outputs.","Record the equipment or control-document revision supporting this functional block.","Check this application limit in the project design: Every destination requires a defined zone assignment."],"distinction":"Every destination requires a defined zone assignment. 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":"Protection initiations"},{"label":"Output / connection","value":"Selected breaker trip outputs"},{"label":"Lookup label","value":"PTDM is a library lookup label, not a standard device designation."}],"references":[{"sourceId":"pi26-masterclad","relevance":"Public technical context for breaker trip circuits. Breaker control, mechanism, position contacts, racking interlocks and test interfaces. The application text and educational graphic are independently authored; the publisher does not certify this representation."}],"related":["circuit-breaker","86-lockout","manual-emergency-trip-path"],"artwork":"pi26-protection-trip-distribution-matrix","publishedOn":"2026-11-03","updatedOn":"2026-11-03","provenance":"independent-public-research","representation":{"type":"functional-block","focus":"switchgear","family":"trip","input":"Protection initiations","output":"Selected breaker trip outputs"},"plainEnglish":{"title":"What this block does","introduction":"Routes each protection initiation to the breakers assigned to the affected protection zone.","example":"In a switchgear incomer panel, a protection relay requests opening and an auxiliary contact reports the resulting breaker position. A second trip path can have its own supply and wiring so that a single wiring fault does not remove both paths. For this reference, the drawing identifies “Protection initiations” at the input and “Selected breaker trip outputs” at the output. Every destination requires a defined zone assignment.","drawings":"Start at the named input: Protection initiations. Identify its source device or document and the state represented on the drawing. Follow the named output: Selected breaker trip outputs. Cross-reference its destination and separate the command from confirmation that the equipment responded.","terms":[{"name":"Input","meaning":"Protection initiations"},{"name":"Output","meaning":"Selected breaker trip outputs"},{"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":["Protection initiations","PTDM","Selected breaker trip outputs"],"caption":"A reading guide. The entry's original illustration and input/output facts describe this application.","sources":[{"label":"Masterclad medium-voltage switchgear: circuit-breaker section interlocks","url":"https://productinfo.se.com/masterclad_mv_switchgear_ib/6055-30-masterclad-15kv-mv-switchgear-ib/English/6055-30%20Masterclad%20MV%20Switchgear%20Indoor%20%28bookmap%29_DD00646805.xml/%24/Section6-CircuitBreakerSectionInter-58DD6EC7"}],"profileId":"power-installation-trip"},"url":"https://eloragrid.ai/symbols/protection-trip-distribution-matrix","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/protection-trip-distribution-matrix.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"pi26-masterclad","publisher":"Schneider Electric","title":"Masterclad medium-voltage switchgear: circuit-breaker section interlocks","url":"https://productinfo.se.com/masterclad_mv_switchgear_ib/6055-30-masterclad-15kv-mv-switchgear-ib/English/6055-30%20Masterclad%20MV%20Switchgear%20Indoor%20%28bookmap%29_DD00646805.xml/%24/Section6-CircuitBreakerSectionInter-58DD6EC7","scope":"Breaker control, mechanism, position contacts, racking interlocks and test interfaces.","type":"manufacturer","checkedOn":"2026-11-03","reuse":"link-only","relevance":"Public technical context for breaker trip circuits. Breaker control, mechanism, position contacts, racking interlocks and test interfaces. The application text and educational graphic are independently authored; the publisher does not certify this representation."}]}