{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9N21366","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9N21366","canonicalUrl":"https://aoctrl.com/schneider/A9N21366","factsUrl":"https://aoctrl.com/api/mcp/products/A9N21366","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric ProDis DT40N MCB, A9N21366, 1P+N, 16 A, C curve, 6 kA Icn / 10 kA Icu, thermal-magnetic, DIN-rail clip-on, white.","salesMarkdown":"It clips onto DIN rail and is built for distribution panels — the thermal-magnetic trip unit handles overloads and short-circuits in a single module width (18 mm). Breaking capacity is 6 kA Icn at 230 V AC per EN/IEC 60898-1, and 10 kA Icu at 230–240 V AC per IEC 60947-2. That dual rating means it qualifies for both residential (60898-1) and industrial (60947-2) applications — useful when a panel must meet both standards without swapping breakers. At 16 A, this breaker suits branch circuits feeding a mix of resistive and light inductive loads up to roughly 3.5 kW on a 230 V line. Overvoltage category IV qualifies it for the service entrance or main distribution board, not just sub-panels. Tropicalisation level 2 per IEC 60068-1 means the breaker is treated against humidity and fungal growth — relevant for installations in coastal or high-humidity zones where standard breakers may corrode internally. For volume purchases or BOM freeze, the part is specified into the panel design with full traceability to the Schneider ProDis family. The dual-standard certification (EN/IEC 60898-1 and 60947-2) simplifies compliance documentation across projects. Neutral is on the left (fixed position). IP20 finger-safe protection (IEC 60529) is standard for enclosed panels. The toggle control gives clear ON/OFF indication. Earth-leakage protection requires a separate block — not built in.","metaTitle":"Schneider Electric A9N21366 DT40N MCB, 16 A, 1P+N, C Curve,","metaDescription":"Schneider Electric A9N21366 DT40N MCB, 16 A rated, 1P+N, C curve, 6 kA Icn / 10 kA Icu. Dual-rated to EN/IEC 60898-1 and 60947-2. DIN-rail clip-on. Current lifecycle. Quoted to ord","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":"16 A","Overvoltage category":"IV","Trip unit technology":"Thermal-magnetic","Electrical durability":"20000 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/b74f7162d4efc9c5c5b6df297bee9397.pdf","sourceUrl":"https://www.se.com/uk/en/product/A9N21366/dt40-circuit-breaker-dt40n-1p-+-n-16a-c-curve/","alternativesUrl":"https://aoctrl.com/api/mcp/products/A9N21366/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings of A9N21366?","answer":"16 A rated current, C curve, 1P+N poles, breaking capacity 6 kA Icn (EN/IEC 60898-1) and 10 kA Icu (IEC 60947-2), thermal-magnetic trip, DIN-rail clip-on, width 18 mm."},{"question":"Where can I buy A9N21366?","answer":"It 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 price and lead time."},{"question":"What compliance documentation does Schneider provide for A9N21366?","answer":"The breaker carries dual certification to EN/IEC 60898-1 and IEC 60947-2, pollution degree 3, overvoltage category IV, tropicalisation level 2, and IP20 protection. Quality label NF is listed. RoHS/REACH/UL documentation should be requested at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9N21366","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/A9N21366 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}}