{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9Y85740","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9Y85740","canonicalUrl":"https://aoctrl.com/schneider/A9Y85740","factsUrl":"https://aoctrl.com/api/mcp/products/A9Y85740","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Acti9 Vigi iC40 add-on residual current device, A9Y85740, 3P+N, 40 A rated current, 300 mA sensitivity, Type A-SI, 400 V AC, clip-on DIN rail.","salesMarkdown":"The A9Y85740: The 300 mA sensitivity is the trip threshold for earth leakage. This is not a 30 mA personal-protection device — it is sized for equipment protection or fire prevention on circuits where nuisance tripping from normal leakage (long cable runs, industrial loads) would shut down production. The Type A-SI (Super Immunised) designation means it handles pulsed DC fault currents (rectifier-fed loads) and resists unwanted tripping from high-frequency leakage or transient surges common on industrial lines. Voltage-independent tripping means the RCD operates on the residual current itself, not on the line voltage — it will still trip if the neutral is lost upstream. Rated insulation voltage is 440 V AC, and the operational voltage is 400 V AC — standard for a 3-phase + N distribution board in a 400/230 V system. For a distribution board that sees infrequent manual operation, this is a long service life. Neutral is on the left. The device is an add-on RCD — it screws directly to the outgoing side of a compatible Acti9 MCB (the Vigi iC40 mates with the iC40 range of miniature circuit breakers). Tunnel-type terminals accept 1 to 16 mm² rigid or 1 to 10 mm² flexible cable; strip length 14 mm, tightening torque 2 N.m. The IP20 body is standard for enclosed distribution boards; the modular enclosure achieves IP40 when installed in a panel.","metaTitle":"Schneider Electric A9Y85740 Acti9 Vigi iC40 RCD, 40A 300mA 3","metaDescription":"Schneider Electric A9Y85740 Acti9 Vigi iC40 add-on RCD. 40 A, 300 mA sensitivity, Type A-SI, 3P+N. EN/IEC 61009-2-1. Clip-on DIN rail. Current lifecycle. Quoted 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":"90 mm","Colour":"White","Height":"99.5 mm","Standards":"EN/IEC 61009-2-1","9 Mm Pitches":"4","Network type":"AC","Product name":"Acti9 Vigi iC40","Mounting mode":"Clip-on","Quality labels":"OVE","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 iC40","Network frequency":"50/60 Hz","Poles description":"3P + N","Relative humidity":"95 % at 55 °C","Tightening torque":"2 N.m bottom","Operating altitude":"2000 m","[In] rated current":"40 A","Electrical durability":"10000 cycles","Mechanical durability":"20000 cycles","Wire stripping length":"14 mm for bottom connection","Connections - terminals":"Tunnel type terminal bottom 1...16 mm² rigid Tunnel type terminal bottom 1...10 mm² flexible","IP degree of protection":"IP20 conforming to IEC 60529 IP40 (modular enclosure) conforming to IEC 60529","Device location in system":"Outgoer","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":"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":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.se.com/nl/en/product/A9Y85740/addon-residual-current-device-acti9-vigi-ic40-3p+n-40a-asi-type-instantaneous-300ma-400vac/","alternativesUrl":"https://aoctrl.com/api/mcp/products/A9Y85740/alternatives.json"},"ai":{"faq":[{"question":"What is the A9Y85740 used for?","answer":"It is an add-on residual current device (RCD) for 3P+N circuits, rated 40 A and 300 mA sensitivity, Type A-SI. It installs downstream of a compatible Acti9 MCB to provide earth-leakage protection on outgoing distribution circuits in industrial and commercial panels."},{"question":"Where can I buy the A9Y85740 and get a price?","answer":"The A9Y85740 is sourced and quoted to order against an RFQ through independent distribution channels. Current pricing and availability are confirmed at the time of quote — submit an RFQ for a firm commercial offer."},{"question":"What compliance documentation does the A9Y85740 carry?","answer":"It is certified to EN/IEC 61009-2-1 and carries the OVE quality label. The rated insulation voltage is 440 V AC, impulse withstand voltage 4 kV, and pollution degree 3 per the same standard."},{"question":"What is the closest alternative to the A9Y85740 in the Acti9 range?","answer":"The A9Y85740 is the 40 A, 300 mA, Type A-SI, 3P+N variant of the Vigi iC40 add-on RCD. Other sensitivity or pole-configuration variants exist in the same Vigi iC40 family (e.g. 30 mA, 2P), but the 300 mA Type A-SI 3P+N is a specific combination for equipment protection on three-phase industrial circuits. No pin-compatible drop-in with different ratings is a direct substitute — match the sensitivity, type, and pole count to the circuit requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9Y85740","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/A9Y85740 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}}