{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9A26479","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9A26479","canonicalUrl":"https://aoctrl.com/schneider/A9A26479","factsUrl":"https://aoctrl.com/api/mcp/products/A9A26479","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Acti9 iMSU overvoltage release, A9A26479, 255 V trip threshold, 230 V AC 50/60 Hz control circuit, 18 mm width, clip-on DIN rail mount.","salesMarkdown":"The Schneider Electric A9A26479 is an iMSU overvoltage release from the Acti9 range — a control-circuit accessory that trips a downstream breaker or contactor when the monitored voltage exceeds 255 V. The part carries an action indicator for local signalling of the release state, and its clamp terminals accept up to 7 mm² rigid or 5 mm² flexible cable — sized for standard panel wiring. ## Standards and environmental rating The release is certified to EN/IEC 60947-5-1, the standard for control-circuit devices and switching elements. Tightening torque for the terminals is 1 N·m.","metaTitle":"A9A26479 iMSU Overvoltage Release, 255V Trip, 230VAC, 18mm","metaDescription":"Schneider Electric A9A26479 iMSU overvoltage release, 255V trip threshold, 230VAC control, 18mm wide, DIN rail clip-on. Obsolete — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Width":"18 mm","Colour":"White","Standards":"EN/IEC 60947-5-1","9 Mm Pitches":"2","Mounting mode":"Clip-on","Tropicalisation":"2 conforming to EN/IEC 60947-5-1","lifecycle_stage":"current","Local signalling":"Action indicator","Mounting support":"DIN rail","Range Of Product":"Acti9","Device short name":"iMSU","Relative humidity":"95 % at 55 °C","Tightening torque":"1 N.m","Connections - terminals":"Clamp terminal - 1 cable(s) 7 mm² - rigid Clamp terminal - 2 cable(s) 2.6 mm² - rigid Clamp terminal - 1 cable(s) 5 mm² - flexible Clamp terminal - 2 cable(s) 2.6 mm² - flexible with cable end","Product or component type":"Overvoltage release","Threshold tripping voltage":"255 V","[Uc] control circuit voltage":"230 V AC 50/60 Hz","Ambient air temperature for storage":"-40...85 °C","Ambient air temperature for operation":"-25...50 °C"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.se.com/vn/en/product/A9A26479/voltage-release-imsu-255v-230vac/","alternativesUrl":"https://aoctrl.com/api/mcp/products/A9A26479/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the A9A26479?","answer":"We source the A9A26479 to order against an RFQ through independent distribution. Submit a request for current pricing and availability — we confirm both at quote time."},{"question":"What is the trip threshold of the A9A26479?","answer":"The overvoltage release trips at 255 V. Its control circuit is rated for 230 V AC 50/60 Hz."},{"question":"What is the width of the A9A26479?","answer":"The A9A26479 is 18 mm wide, which is a single modular DIN-rail pitch. It clips onto the rail and occupies one 18 mm slot in the panel."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9A26479","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/schneider/A9A26479 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}