{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9N18522","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9N18522","canonicalUrl":"https://aoctrl.com/schneider/A9N18522","factsUrl":"https://aoctrl.com/api/mcp/products/A9N18522","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Acti9 C120 miniature circuit breaker, A9N18522, D curve, 63 A rated, 4 poles, 15 kA Icn at 400 V AC, clip-on 35 mm DIN rail.","salesMarkdown":"The Schneider Electric A9N18522 is a 4-pole Acti9 C120 miniature circuit breaker rated 63 A at 30 °C with a D tripping curve (magnetic trip 10–14 x In). The 15 kA Icn at 400 V AC (per EN/IEC 60898-1) covers most commercial and light industrial service-entrance faults; the 10 kA Icu at 440 V AC (per EN/IEC 60947-2) handles the higher prospective fault current you might see on a transformer secondary. Dual-rated to both standards means you can spec it for either residential or industrial duty without juggling two part numbers. D curve means the magnetic trip holds to 10–14 times rated current — it's built for transformer inrush, motor starting, or any load with a high initial surge that would nuisance-trip a C-curve breaker. At 63 A on a 400 V three-phase system, that's roughly 35 kW of connected load, so it fits a lighting sub-main, a small HVAC panel, or a machine-tool disconnect. The 15 kA Icn at 400 V AC is the rated short-circuit capacity under the domestic-standard test sequence (EN/IEC 60898-1); the 30 kA Icu at 220–240 V AC (per EN/IEC 60947-2) tells you it can interrupt a much higher fault on a 240 V single-phase leg without welding its contacts. It's a standard catalog item in the Acti9 line, so it's routinely sourced through independent distribution. The breaker occupies 12 x 9 mm pitches on the DIN rail — 108 mm wide total. Tunnel terminals accept 1–50 mm² rigid or 1.5–35 mm² flexible; strip 15 mm, torque to 3.5 N·m. Neutral is on the left (fixed position). IP20 finger-safe terminals, so no live metal exposed after wiring. The toggle gives clear ON/OFF indication; a separate earth-leakage block can be added downstream if you need RCD protection.","metaTitle":"Schneider Electric A9N18522 Acti9 C120 MCB, D Curve, 63 A, 4","metaDescription":"Schneider Electric A9N18522 Acti9 C120 miniature circuit breaker, 63 A rated, D curve, 4 poles, 15 kA breaking capacity at 400 V AC. Sourced 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":"A9N18522","Colour":"White","Height":"81 mm","Standards":"EN/IEC 60898-1 EN/IEC 60947-2","Curve code":"D","description":"Miniature circuit breaker (MCB), Acti9 C120H, 4P, 63A, D curve, 15000A (IEC/EN 60898-1), 15kA (IEC/EN 60947-2)","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","Neutral position":"Left","Pollution degree":"3 conforming to IEC 60947-2","Breaking capacity":"15000 A Icn at 400 V AC 50/60 Hz conforming to EN/IEC 60898-1 10 kA Icu at 440 V AC 50/60 Hz conforming to EN/IEC 60947-2 15 kA Icu at 380...415 V AC 50/60 Hz conforming to EN/IEC 60947-2 30 kA Icu at 220...240 V AC 50/60 Hz conforming to EN/IEC 60947-2 15 kA Icu at <= 500 V DC conforming to EN/IEC 60947-2","Device short name":"C120H","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...70 °C","Ambient air temperature for operation":"-30...60 °C","[Ics] rated service breaking capacity":"7500 A 50 % conforming to EN/IEC 60898-1 - 400 V AC 50/60 Hz 5 kA 50 % conforming to EN/IEC 60947-2 - 440 V AC 50/60 Hz 15 kA 50 % conforming to EN/IEC 60947-2 - 220...240 V AC 50/60 Hz 7.5 kA 50 % conforming to EN/IEC 60947-2 - 380...415 V AC 50/60 Hz 15 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/11a7f8405023888ab6fa3a6edda38d2d.pdf","sourceUrl":"https://www.se.com/ie/en/product/A9N18522/miniature-circuit-breaker-mcb-acti9-c120h-4p-63a-d-curve-15000a-iec-en-608981-15ka-iec-en-609472/"},"ai":{"faq":[{"question":"Where can I buy the A9N18522 and how is it quoted?","answer":"The A9N18522 is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the closest alternative to the A9N18522 in the Acti9 family?","answer":"Within the Acti9 C120 range, the closest peer is the same physical breaker with a C curve instead of D. The D curve's 10–14 x In magnetic trip is the deciding factor for loads with high inrush; if your load is resistive or general-purpose, the C-curve variant is functionally interchangeable in the same DIN footprint."},{"question":"What compliance documentation does Schneider provide for the A9N18522?","answer":"The breaker is certified to EN/IEC 60898-1 and EN/IEC 60947-2, with tropicalisation class 2 per IEC 60068-1. Standard Schneider declarations of conformity cover CE, UKCA, and EAC for the Acti9 range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9N18522","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/A9N18522 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}}