{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9P62740","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9P62740","canonicalUrl":"https://aoctrl.com/schneider/A9P62740","factsUrl":"https://aoctrl.com/api/mcp/products/A9P62740","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Acti9 iC40, A9P62740, miniature circuit-breaker, 40 A, D curve, 3P+N, 4.5 kA Icn / 6 kA Icu at 400 V AC, DIN rail clip-on.","salesMarkdown":"## Breaking capacity and dual standard rating The A9P62740 carries two breaking-capacity ratings that govern where it fits: 4.5 kA Icn per EN/IEC 60898-1 for residential or light commercial distribution boards, and 6 kA Icu per EN/IEC 60947-2 for industrial panel applications where the prospective fault current is higher. ## D curve — what it means on the line The D curve trips magnetically between 10 and 14 times the rated current (10–14 x In per EN/IEC 60898-1, with a tighter 12 x In ±20% per EN/IEC 60947-2). If you are protecting a 40 A motor circuit or a control transformer, the D curve is the one that stays closed through the start transient. The 3P+N body takes 6 module pitches (54 mm wide) on a DIN rail. IP20 finger-safe on the front; IP40 inside a modular enclosure.","metaTitle":"Schneider Electric A9P62740 Acti9 iC40 MCB, D Curve, 40 A, 3","metaDescription":"Schneider Electric A9P62740 Acti9 iC40 miniature circuit-breaker, 40 A, D curve, 3P+N, 4.5 kA Icn / 6 kA Icu at 400 V AC. DIN rail clip-on. Current production. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Breaker Accessories"],"specifications":{"Depth":"74 mm","Range":"Acti9","Width":"54 mm","Colour":"White","Height":"85 mm","Standards":"EN/IEC 60898-1 EN/IEC 60947-2","Curve code":"D","9 Mm Pitches":"6","Control type":"Toggle","Network type":"AC","Product name":"Acti9 iC40","Mounting mode":"Clip-on","lifecycle_stage":"current","Local signalling":"ON/OFF indication Trip indicator","Mounting support":"DIN rail","Neutral position":"Left","Pollution degree":"3 conforming to EN/IEC 60947-2","Breaking capacity":"4500 A Icn at 400 V AC 50/60 Hz conforming to EN/IEC 60898-1 6 kA Icu at 400 V AC 50/60 Hz conforming to EN/IEC 60947-2","Device short name":"iC40","Network frequency":"50/60 Hz","Poles description":"3P + N","Relative humidity":"95 % at 55 °C","Tightening torque":"2 N.m top or bottom","Device application":"Distribution","Operating altitude":"2000 m","[In] rated current":"40 A","Trip unit technology":"Thermal-magnetic","Electrical durability":"10000 cycles","Mechanical durability":"20000 cycles","Wire stripping length":"14 mm for top or bottom connection","Connections - terminals":"Tunnel type terminals top or bottom 1...10 mm² flexible Tunnel type terminals top or bottom 1...16 mm² rigid","IP degree of protection":"IP20 conforming to IEC 60529 IP40 (modular enclosure) conforming to IEC 60529","Magnetic tripping limit":"10...14 x In conforming to EN/IEC 60898-1 12 x In +/- 20 % conforming to EN/IEC 60947-2","Earth-leakage protection":"Separate block","Number of protected poles":"3","Product or component type":"Miniature circuit-breaker","Suitability for isolation":"Yes conforming to EN/IEC 60947-2","Contact position indicator":"Yes","Locking options description":"Padlocking device","[Ui] rated insulation voltage":"440 V AC 50/60 Hz conforming to EN/IEC 60947-2","[Ue] rated operational voltage":"400 V AC 50/60 Hz","Ambient air temperature for storage":"-40...85 °C","Ambient air temperature for operation":"-25...70 °C","[Ics] rated service breaking capacity":"4500 A 100 % x Icn at 400 V AC 50/60 Hz conforming to EN/IEC 60898-1 4.5 kA 75 % x Icu at 400 V AC 50/60 Hz conforming to EN/IEC 60947-2","[Uimp] rated impulse withstand voltage":"4 kV conforming to EN/IEC 60947-2"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.se.com/nl/en/product/A9P62740/miniature-circuitbreaker-acti9-ic40-3p+n-40-a-d-curve-4500-a-iec-608981-6-ka-iec-609472/","alternativesUrl":"https://aoctrl.com/api/mcp/products/A9P62740/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of the A9P62740 at 400 V AC?","answer":"The A9P62740 is rated 4.5 kA Icn per EN/IEC 60898-1 and 6 kA Icu per EN/IEC 60947-2 at 400 V AC, 50/60 Hz."},{"question":"What does the D curve mean on this MCB?","answer":"The D curve trips magnetically between 10 and 14 times the rated current, making it suitable for loads with high inrush current such as motors and transformers."},{"question":"What is the width of the A9P62740 in DIN-rail module pitches?","answer":"The A9P62740 occupies 6 module pitches (54 mm) on a DIN rail."},{"question":"Where can I buy the A9P62740?","answer":"The A9P62740 is sourced and quoted to order against an RFQ through independent distribution, with availability and current pricing confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9P62740","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/A9P62740 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}}