{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9N18390","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9N18390","canonicalUrl":"https://aoctrl.com/schneider/A9N18390","factsUrl":"https://aoctrl.com/api/mcp/products/A9N18390","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Acti9 C120N miniature circuit breaker, A9N18390, 4-pole, D curve, 63 A rated current, 10 kA breaking capacity at 400 V AC.","salesMarkdown":"The A9N18390 is a 4-pole Acti9 C120N miniature circuit breaker rated 63 A at 30 °C with a D tripping curve (10–14 × In magnetic trip). Breaking capacity is 10 kA Icn at 400 V AC per EN/IEC 60898-1, and 6 kA Icu at 440 V AC per EN/IEC 60947-2. For DC circuits it's rated 10 kA Icu at ≤500 V DC, so it works on 480 V DC bus applications too. Dual-rated to EN/IEC 60898-1 and EN/IEC 60947-2, which means it qualifies both as a domestic MCB and as an industrial circuit breaker for isolation duty (suitability for isolation confirmed per IEC 60947-2). At 108 mm wide (12 × 9 mm pitches) for 4 poles, it occupies the expected 4-module width in a distribution board. Tunnel terminals accept 1–50 mm² rigid or 1.5–35 mm² flexible, with a 3.5 N·m tightening torque and 15 mm strip length — standard for panel wiring with no surprises. IP20 finger protection on the front, so it's safe for open-panel mounting but not for washdown areas.","metaTitle":"Schneider Electric A9N18390 Acti9 C120N MCB, D Curve, 63 A,","metaDescription":"Schneider Electric A9N18390 Acti9 C120N miniature circuit breaker. 63 A, D curve, 4 poles, 10 kA breaking capacity at 400 V. Current lifecycle stage. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"73 mm","Range":"Acti9","Width":"108 mm","title":"A9N18390","Colour":"White","Height":"81 mm","Standards":"EN/IEC 60947-2 EN/IEC 60898-1","Curve code":"D","description":"C120N - circuit breaker - 4P - 63A - D curve","9 Mm Pitches":"12","Control type":"Toggle","Network type":"AC","Product name":"Acti9 C120","Mounting mode":"Clip-on","Tropicalisation":"2 conforming to IEC 60068-1","lifecycle_stage":"current","Limitation class":"3 conforming to EN/IEC 60947-2","Local signalling":"ON/OFF indication","Mounting support":"35 mm symmetrical DIN rail","Pollution degree":"3 conforming to IEC 60947-2","Breaking capacity":"10000 A Icn at 400 V AC 50/60 Hz conforming to EN/IEC 60898-1 6 kA Icu at 440 V AC 50/60 Hz conforming to EN/IEC 60947-2 20 kA Icu at 220...240 V AC 50/60 Hz conforming to EN/IEC 60947-2 10 kA Icu at 380...415 V AC 50/60 Hz conforming to EN/IEC 60947-2 10 kA Icu at <= 500 V DC conforming to EN/IEC 60947-2","Device short name":"C120N","Network frequency":"50/60 Hz","Poles description":"4P","Relative humidity":"95 % at 55 °C","Tightening torque":"3.5 N.m","Device application":"Distribution","Operating altitude":"2000 m","[In] rated current":"63 A at 30 °C","Overvoltage category":"IV","Trip unit technology":"Thermal-magnetic","Electrical durability":"10000 cycles conforming to IEC 60947-2","Mechanical durability":"20000 cycles","Wire stripping length":"15 mm","Connections - terminals":"Tunnel type terminals1...50 mm² rigid Tunnel type terminals1.5...35 mm² flexible","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":"4","Product or component type":"Miniature circuit-breaker","Suitability for isolation":"Yes conforming to IEC 60947-2","Contact position indicator":"Yes","Locking options description":"Handle sealable with cable diameter 0.7mm in OFF or ON position","[Ui] rated insulation voltage":"500 V AC 50/60 Hz conforming to EN/IEC 60947-2","[Ue] rated operational voltage":"380...415 V AC 50/60 Hz 220...240 V AC 50/60 Hz 440 V AC 50/60 Hz 230...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":"7500 A 75 % conforming to EN/IEC 60898-1 - 400 V AC 50/60 Hz 4.5 kA 75 % conforming to EN/IEC 60947-2 - 440 V AC 50/60 Hz 7.5 kA 75 % conforming to EN/IEC 60947-2 - 380...415 V AC 50/60 Hz 15 kA 75 % conforming to EN/IEC 60947-2 - 220...240 V AC 50/60 Hz 10 kA 100 % conforming to EN/IEC 60947-2 - <= 500 V DC","[Uimp] rated impulse withstand voltage":"6 kV conforming to EN/IEC 60947-2","Comb busbar and distribution block compatibility":"YES"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f444046efdd1e34a1a1743c923236bbe.pdf","sourceUrl":"https://www.se.com/ae/en/product/A9N18390/c120n-circuit-breaker-4p-63a-d-curve/"},"ai":{"faq":[{"question":"Where can I buy A9N18390?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of A9N18390 at 400 V?","answer":"10 kA Icn at 400 V AC per EN/IEC 60898-1, and 10 kA Icu at 380–415 V AC per EN/IEC 60947-2."},{"question":"What compliance standards does A9N18390 meet?","answer":"It is dual-certified to EN/IEC 60898-1 and EN/IEC 60947-2, with suitability for isolation confirmed per IEC 60947-2. Pollution degree 3 and overvoltage category IV are stated."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9N18390","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/A9N18390 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}