{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9N21410","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9N21410","canonicalUrl":"https://aoctrl.com/schneider/A9N21410","factsUrl":"https://aoctrl.com/api/mcp/products/A9N21410","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric A9N21410 DT40N miniature circuit breaker, Prodis range, 40 A rated current, C-curve, 3P+N, 6 kA Icn / 10 kA Icu.","salesMarkdown":"## What this MCB covers The 6 kA Icn (EN/IEC 60898-1) handles most domestic fault levels; the 10 kA Icu (IEC 60947-2) gives headroom for industrial sub-distribution where higher prospective fault current is expected. Clip-on mounting to standard DIN rail, 54 mm wide (6 x 9 mm pitches) — occupies three modular spaces plus one for the neutral. Depth 78 mm, height 81 mm. Wire strip length 13 mm. IP20 finger-safe front; pollution degree 3 rated, so suitable for panels without sealed enclosures. Listed as current production. No official successor — this is the active DT40N variant for the Prodis range.","metaTitle":"Schneider Electric A9N21410 DT40N MCB, 40 A C-Curve 3P+N","metaDescription":"Schneider Electric A9N21410 DT40N miniature circuit breaker, 40 A rated current, C-curve, 3P+N, 6 kA Icn / 10 kA Icu, EN/IEC 60898-1 and 60947-2. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"78 mm","Range":"Prodis","Width":"54 mm","Colour":"White","Height":"81 mm","Standards":"EN/IEC 60898-1 EN/IEC 60947-2","Curve code":"C","9 Mm Pitches":"6","Control type":"Toggle","Network type":"AC","Product name":"DT40","Mounting mode":"Clip-on","Quality labels":"NF","Tropicalisation":"2 conforming to IEC 60068-1","lifecycle_stage":"current","Limitation class":"3 conforming to EN/IEC 60898-1","Local signalling":"ON/OFF indication","Mounting support":"DIN rail","Neutral position":"Left","Pollution degree":"3 conforming to IEC 60947-2","Range of product":"ProDis","Breaking capacity":"6000 A Icn at 400 V AC 50 Hz conforming to EN/IEC 60898-1 10 kA Icu at 400...415 V AC 50 Hz conforming to IEC 60947-2","Device short name":"DT40N","Network frequency":"50 Hz","Poles description":"3P + N","Relative humidity":"95 % at 55 °C","Tightening torque":"2 N.m","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":"13 mm","Connections - terminals":"Tunnel type terminals downstream 0.33...10 mm² flexible Tunnel type terminals downstream 0.75...16 mm² rigid Tunnel type terminals upstream 0.33...10 mm² flexible Tunnel type terminals upstream 0.75...16 mm² rigid","IP degree of protection":"IP20 conforming to IEC 60529","Magnetic tripping limit":"5...10 x In","Earth-leakage protection":"Separate block","Number of protected poles":"3","Product or component type":"Miniature circuit-breaker","Suitability for isolation":"Yes","Contact position indicator":"Yes","Locking options description":"Padlocking device","[Ui] rated insulation voltage":"400 V AC 50 Hz","[Ue] rated operational voltage":"230 V AC 50 Hz between phase and neutral 400 V AC 50 Hz between phases","Ambient air temperature for storage":"-40...70 °C","Ambient air temperature for operation":"-25...70 °C","[Ics] rated service breaking capacity":"6000 A 100 % x Icn at 400 V AC 50 Hz conforming to EN/IEC 60898-1 7.5 kA 75 % x Icu at 400 V AC 50 Hz conforming to IEC 60947-2","[Uimp] rated impulse withstand voltage":"4 kV conforming to IEC 60947-2"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1a609c10a9a0f5dc9330ee7b302bdb85.pdf","sourceUrl":"https://www.se.com/uk/en/product/A9N21410/dt40-circuit-breaker-dt40n-3p-+-n-40a-c-curve/","alternativesUrl":"https://aoctrl.com/api/mcp/products/A9N21410/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy A9N21410 and how do I get a price?","answer":"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 price and lead-time estimate."},{"question":"What is A9N21410's breaking capacity and what standards does it meet?","answer":"The MCB carries a 6 kA Icn at 400 V AC per EN/IEC 60898-1 and a 10 kA Icu at 400–415 V AC per IEC 60947-2. The dual rating means it meets both domestic (60898-1) and industrial (60947-2) application standards, giving flexibility in panel design."},{"question":"What compliance documentation does this brand provide for A9N21410?","answer":"The part carries NF quality label certification and conforms to EN/IEC 60898-1 and EN/IEC 60947-2. Tropicalisation level 2 per IEC 60068-1 and limitation class 3 per EN/IEC 60898-1 are specified. Standard compliance documentation (declaration of conformity, CE) is provided with the product."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9N21410","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/A9N21410 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}}