{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9Y76740","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9Y76740","canonicalUrl":"https://aoctrl.com/schneider/A9Y76740","factsUrl":"https://aoctrl.com/api/mcp/products/A9Y76740","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Acti9 Vigi iCG40 add-on residual current device, 3P+N, 40 A rated, 300 mA sensitivity, Type A-SI super immunised, selective, voltage independent, clip-on DIN rail.","salesMarkdown":"The Schneider Electric A9Y76740 is an add-on residual current device (RCD) from the Acti9 Vigi iCG40 range, designed to bolt onto the outgoing side of a compatible Acti9 MCB via the screw terminals. It provides earth-leakage protection for a 3P+N circuit at 40 A rated current and 400 V AC operational voltage. The 300 mA sensitivity is selective (time-delayed), so it coordinates with downstream 30 mA RCDs — the upstream unit holds off during a fault to let the closer device clear first, avoiding a whole-section blackout for a single branch fault. Rated at 40 A (In) and 400 V AC, this RCD handles the full load current of a typical sub-distribution board feeding lighting, general-purpose sockets, or small motor circuits — not a main incomer for a whole building, but a group feeder. The Type A-SI (Super Immunised) classification means it rejects nuisance tripping from pulsed DC fault currents and high-frequency leakage common in VFD-driven loads, switched-mode power supplies, and electronic ballasts. Standard Type A RCDs can false-trip on those waveforms; the A-SI variant holds steady. Voltage-independent tripping (no need for an auxiliary supply) means the RCD clears a ground fault even if the line voltage collapses — critical for safety in a group incomer where a lost neutral could otherwise leave a fault undetected. Clip-on DIN rail mounting, 108 mm wide (6 x 9 mm pitches), with a depth of 74 mm and height of 99.5 mm. Tunnel-type terminals accept 1…16 mm² rigid or 1…10 mm² flexible cable on top; strip length 14 mm, tighten to 2 N·m. The screw connection to the upstream MCB uses the same terminals — no pigtail or flying leads. Rated for ambient operation from -25 °C to 60 °C, storage from -40 °C to 85 °C, and up to 2000 m altitude.","metaTitle":"Schneider Electric A9Y76740 Acti9 Vigi iCG40 RCD, 40A 300mA","metaDescription":"Schneider Electric Acti9 Vigi iCG40 add-on RCD (A9Y76740). 40 A, 300 mA sensitivity, Type A-SI super immunised, selective, voltage independent. Current lifecycle, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"74 mm","Range":"Acti9","Width":"108 mm","Colour":"White","Height":"99.5 mm","Standards":"EN/IEC 61009-2-1","9 Mm Pitches":"6","Network type":"AC","Product name":"Acti9 Vigi iCG40","Mounting mode":"Clip-on","Quality labels":"IMQ","lifecycle_stage":"current","Local signalling":"Fault indication","Mounting support":"DIN rail","Neutral position":"Left","Pollution degree":"3 conforming to EN/IEC 61009-2-1","Device short name":"Vigi iCG40","Network frequency":"50/60 Hz","Poles description":"3P + N","Relative humidity":"95 % at 55 °C","Tightening torque":"2 N.m top","Operating altitude":"2000 m","[In] rated current":"40 A","Electrical durability":"10000 cycles","Mechanical durability":"20000 cycles","Wire stripping length":"14 mm for top connection","Connections - terminals":"Tunnel type terminal top 1...16 mm² rigid Tunnel type terminal top 1...10 mm² flexible","IP degree of protection":"IP20 conforming to IEC 60529 IP40 (modular enclosure) conforming to IEC 60529","Device location in system":"Group incomer","Earth-leakage sensitivity":"300 mA","Product or component type":"Add-on residual current device","Electrical connection to mcb":"By screws","[Ui] rated insulation voltage":"440 V AC 50/60 Hz conforming to EN/IEC 61009-2-1","Earth-leakage protection class":"Type A-SI (Super Immunised)","[Ue] rated operational voltage":"400 V AC 50/60 Hz","Ambient air temperature for storage":"-40...85 °C","Earth-leakage protection time delay":"Selective","Residual current tripping technology":"Voltage independent","Ambient air temperature for operation":"-25...60 °C","[Uimp] rated impulse withstand voltage":"4 kV conforming to EN/IEC 61009-2-1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.se.com/nl/en/product/A9Y76740/addon-residual-current-device-acti9-vigi-icg40-3p+n-40a-asi-type-selective-300ma-400vac/","alternativesUrl":"https://aoctrl.com/api/mcp/products/A9Y76740/alternatives.json"},"ai":{"faq":[{"question":"What compliance standards does A9Y76740 meet?","answer":"It is designed to EN/IEC 61009-2-1 (RCCB with overcurrent protection — though this is an add-on RCD, the standard governs the residual current function). Pollution degree 3, rated impulse withstand voltage 4 kV, and IMQ quality label are listed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9Y76740","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/A9Y76740 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}}