# Manual emergency-trip path Canonical URL: https://eloragrid.ai/symbols/manual-emergency-trip-path Publisher: Elora Grid Updated: 2026-11-03 Lookup label: MEP Drawing use: Schematic Reference families: Manufacturer Representation: Functional block Installation focus: switchgear Input: Emergency control contact Output: Breaker opening request Shows the hardwired opening request issued by the designated emergency control station. ## In plain English ### What this block does Shows the hardwired opening request issued by the designated emergency control station. ### A simple 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 “Emergency control contact” at the input and “Breaker opening request” at the output. Opening this breaker may leave other sources connected. ### What the drawings help you do Start at the named input: Emergency control contact. Identify its source device or document and the state represented on the drawing. Follow the named output: Breaker opening request. Cross-reference its destination and separate the command from confirmation that the equipment responded. ### Terms - Input: Emergency control contact - Output: Breaker opening request - Application reference: An explanation of a named drawing function or circuit relationship; the project documents define the equipment and its connections. Concept diagram: Emergency control contact → MEP → Breaker opening request A reading guide. The entry's original illustration and input/output facts describe this application. - [Masterclad medium-voltage switchgear: circuit-breaker section interlocks](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) ## What it represents Shows the hardwired opening request issued by the designated emergency control station. 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 “Emergency control contact” at the input and “Breaker opening request” at the output. Opening this breaker may leave other sources connected. 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. ## How to read it - Start at the named input: Emergency control contact. Identify its source device or document and the state represented on the drawing. - Follow the named output: Breaker opening request. Cross-reference its destination and separate the command from confirmation that the equipment responded. - Opening this breaker may leave other sources connected. - 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. ## Information to show or reference - Label the source and connection reference for emergency control contact. - Identify the destination and defined state of breaker opening request. - Record the equipment or control-document revision supporting this functional block. - Check this application limit in the project design: Opening this breaker may leave other sources connected. ## Important distinction Opening this breaker may leave other sources connected. 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 - Representation: Functional block - Installation focus: Switchgear - Input / boundary: Emergency control contact - Output / connection: Breaker opening request - Lookup label: MEP is a library lookup label, not a standard device designation. ## Public references - [Masterclad medium-voltage switchgear: circuit-breaker section interlocks](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) — Schneider Electric. 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. ## Graphic scope Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.