{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9N21375","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9N21375","canonicalUrl":"https://aoctrl.com/schneider/A9N21375","factsUrl":"https://aoctrl.com/api/mcp/products/A9N21375","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Prodis DT40 MCB, D curve, 10 A, 1P+N, 6 kA Icn / 10 kA Icu, DIN rail clip-on, EN/IEC 60898-1 & 60947-2.","salesMarkdown":"The breaking capacity is 6 kA Icn at 230 V AC per EN/IEC 60898-1 for general-purpose branch-circuit protection, and 10 kA Icu at 230–240 V AC per IEC 60947-2 for industrial panel duty — the higher figure applies when the MCB is used as a standalone industrial device rather than a domestic final-circuit breaker. The 1P+N format switches only the phase; the neutral is a switched neutral that opens with the phase but does not carry an overcurrent trip. This is common in single-phase distribution boards where the neutral must be disconnected for isolation but does not need its own overload protection. Thermal-magnetic trip technology combines a bimetal strip for overload protection (thermal) and a solenoid for short-circuit protection (magnetic). The electrical and mechanical durability are both rated at 20,000 cycles, which is standard for this class of MCB in panel applications. Clip-on mounting to a DIN rail, 18 mm width (2 x 9 mm pitches), 81 mm height, 78 mm depth. The tunnel-type terminals accept flexible cable up to 10 mm² or rigid up to 16 mm², with a wire stripping length of 13 mm and a tightening torque of 2 N·m. The neutral position is on the left, and the toggle control provides local ON/OFF indication. IP20 rated (finger-safe terminals), suitable for installation inside an enclosed panel.","metaTitle":"Schneider Electric A9N21375 Prodis DT40 MCB, D Curve, 10 A,","metaDescription":"Schneider Electric A9N21375 Prodis DT40 MCB, D curve, 10 A rated current, 1P+N, 6 kA Icn / 10 kA Icu, DIN rail mount, EN/IEC 60898-1 & 60947-2. 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":"D","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":"10 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":"10...14 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/88ba2739d256a2aa9d3a3b98f84cd696.pdf","sourceUrl":"https://www.se.com/uk/en/product/A9N21375/dt40-circuit-breaker-dt40n-1p-+-n-10a-d-curve/","alternativesUrl":"https://aoctrl.com/api/mcp/products/A9N21375/alternatives.json"},"ai":{"faq":[{"question":"What standards does the A9N21375 comply with?","answer":"It complies with EN/IEC 60898-1 and EN/IEC 60947-2, covering both domestic and industrial circuit-breaker applications."},{"question":"Where can I buy the A9N21375 and how is it quoted?","answer":"The A9N21375 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9N21375","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/A9N21375 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}}