{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9N21368","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9N21368","canonicalUrl":"https://aoctrl.com/schneider/A9N21368","factsUrl":"https://aoctrl.com/api/mcp/products/A9N21368","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Prodis DT40N, A9N21368, 1P+N MCB, 25 A, curve C, 6 kA Icn / 10 kA Icu, DIN rail clip-on, white.","salesMarkdown":"## MCB selection notes — A9N21368 The 6 kA Icn at 230 V AC (EN/IEC 60898-1) and 10 kA Icu at 230–240 V AC (IEC 60947-2) give the breaker two certified breaking capacities: the Icn is the rated short-circuit capacity for domestic-type installations, while the higher Icu under 60947-2 confirms it can interrupt a fault up to 10 kA and still be reclosed, which matters for industrial panel coordination studies. ## Dual-standard certification and compliance This breaker carries dual certification to EN/IEC 60898-1 (the standard for household and similar installations) and EN/IEC 60947-2 (low-voltage switchgear and controlgear). That dual rating means it is accepted in both domestic distribution boards and industrial panel builds where the designer needs the higher Icu figure for fault-level coordination. ## DIN rail integration and wiring Width is 18 mm (2 × 9 mm pitches), which is the standard 1-module footprint for a 1P+N MCB — fits any 18 mm-wide slot in a distribution board or panel. Tunnel-type terminals accept 0.33–10 mm² flexible or 0.75–16 mm² rigid on both upstream and downstream sides. IP20 finger-safe terminals are standard for enclosed panel use.","metaTitle":"Schneider Electric A9N21368 DT40N MCB, 25 A, 1P+N, Curve C,","metaDescription":"Schneider Electric A9N21368 DT40N MCB, 25 A rated current, 1P+N, curve C, 6 kA (Icn) / 10 kA (Icu). Certified to EN/IEC 60898-1 and IEC 60947-2. DIN rail clip-on. Sourced to order","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"78 mm","Range":"Prodis","Width":"18 mm","Colour":"White","Height":"81 mm","Standards":"EN/IEC 60898-1 EN/IEC 60947-2","Curve code":"C","9 Mm Pitches":"2","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 230 V AC 50 Hz conforming to EN/IEC 60898-1 10 kA Icu at 230...240 V AC 50 Hz conforming to IEC 60947-2","Device short name":"DT40N","Network frequency":"50 Hz","Poles description":"1P + N","Relative humidity":"95 % at 55 °C","Tightening torque":"2 N.m","Device application":"Distribution","Operating altitude":"2000 m","[In] rated current":"25 A","Overvoltage category":"IV","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":"1","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","Ambient air temperature for storage":"-40...70 °C","Ambient air temperature for operation":"-25...70 °C","[Ics] rated service breaking capacity":"7.5 kA 75 % x Icn at 230 V AC 50 Hz conforming to IEC 60947-2 6000 A 100 % x Icn at 230 V AC 50 Hz conforming to EN/IEC 60898-1","[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/2bdd57d1dbeaad2445bec8f921ea58bd.pdf","sourceUrl":"https://www.se.com/uk/en/product/A9N21368/dt40-circuit-breaker-dt40n-1p-+-n-25a-c-curve/","alternativesUrl":"https://aoctrl.com/api/mcp/products/A9N21368/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings of A9N21368?","answer":"Rated current 25 A, curve C (magnetic trip 5–10 × In), breaking capacity 6 kA Icn (EN/IEC 60898-1) and 10 kA Icu (IEC 60947-2), 1P+N, 50 Hz, thermal-magnetic trip unit."},{"question":"Where can I buy A9N21368 and get a price?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What compliance documentation does Schneider provide for A9N21368?","answer":"Certified to EN/IEC 60898-1 and EN/IEC 60947-2, with NF quality label. Pollution degree 3, tropicalisation class 2, IP20. The manufacturer provides a declaration of conformity covering these standards."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9N21368","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/A9N21368 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}}