{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9Y74740","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9Y74740","canonicalUrl":"https://aoctrl.com/schneider/A9Y74740","factsUrl":"https://aoctrl.com/api/mcp/products/A9Y74740","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Acti9 Vigi iCG40, add-on residual current device, 3P+N, 40 A, 30 mA, Type A-SI, 400 V AC, DIN rail clip-on.","salesMarkdown":"It's rated 40 A, 30 mA sensitivity, Type A-SI (Super Immunised), meaning it handles pulsed DC faults and resists nuisance tripping from high-frequency harmonics on motor drives or UPS supplies. The 3P+N pole configuration with neutral on the left suits 3-phase group incomer duty at 400 V AC 50/60 Hz. The 40 A [In] and 30 mA IΔn are the two numbers that decide whether this RCD fits your distribution board. 40 A is the thermal continuous current — it matches a 40 A MCB upstream. The 30 mA sensitivity provides personal protection against direct contact, within the limits of IEC 60364. Type A-SI (Super Immunised) adds a layer of immunity to pulsed DC and high-frequency AC leakage, which is common on VFD-fed loads or electronic ballasts. Voltage-independent tripping means the device operates without needing a neutral-to-earth voltage — it uses the fault current itself to trip, so it works even if the neutral is lost upstream. Clip-on mounting to DIN rail, 6 modules wide (108 mm). Designed as a group incomer, it sits at the head of a sub-distribution board, bolted by screws to the adjacent MCB. Tunnel terminals accept 1–16 mm² rigid or 1–10 mm² flexible cable; tighten to 2 N·m. IP20 body, IP40 in a modular enclosure. Pollution degree 3 per EN/IEC 61009-2-1 — suitable for industrial panels where conductive dust is present.","metaTitle":"Schneider Electric A9Y74740 Acti9 Vigi iCG40, 40A 30mA RCD,","metaDescription":"Schneider Electric A9Y74740 Acti9 Vigi iCG40 add-on RCD. 40 A, 30 mA sensitivity, Type A-SI, 400 V AC. Current production. 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":"30 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":"Instantaneous","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":"$434.32","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.se.com/nl/en/product/A9Y74740/addon-residual-current-device-acti9-vigi-icg40-3p+n-40a-asi-type-instantaneous-30ma-400vac/","alternativesUrl":"https://aoctrl.com/api/mcp/products/A9Y74740/alternatives.json"},"ai":{"faq":[{"question":"What is A9Y74740 used for?","answer":"It's an add-on residual current device (RCD) for Schneider Acti9 distribution boards, providing earth-leakage protection at 40 A, 30 mA sensitivity on 3-phase + neutral circuits. Typical application is as a group incomer in commercial or light industrial sub-distribution."},{"question":"What is the closest alternative to A9Y74740?","answer":"There is no direct pin-compatible alternative in the Acti9 range — the Vigi iCG40 is the only voltage-independent add-on RCD at this rating. A functionally similar option would be a combined RCBO (like the Acti9 iC60 with integrated Vigi module), but that changes the form factor and wiring."},{"question":"Where can I buy A9Y74740?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer."},{"question":"What compliance documentation does Schneider provide for A9Y74740?","answer":"The device carries IMQ quality label and is certified to EN/IEC 61009-2-1. Standard Schneider documentation includes a CE declaration of conformity and the product datasheet. RoHS and REACH compliance is standard for the Acti9 range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9Y74740","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/A9Y74740 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}}