{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9N18524","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9N18524","canonicalUrl":"https://aoctrl.com/schneider/A9N18524","factsUrl":"https://aoctrl.com/api/mcp/products/A9N18524","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Acti9 C120H miniature circuit breaker, A9N18524, 4-pole, 100 A, D curve, 15 kA breaking capacity at 400 V AC, clip-on 35 mm DIN rail.","salesMarkdown":"The A9N18524 is a 4-pole Acti9 C120H miniature circuit breaker rated 100 A at 30 °C, with a D trip curve (magnetic trip between 10 and 14 times In). The 15 kA Icn at 400 V AC (per EN/IEC 60898-1) tells you it can clear a fault up to that level without welding its contacts; the IEC 60947-2 ratings go higher (30 kA Icu at 240 V) for industrial panel coordination. ## D curve vs motor loads — the real selector The D curve's 10–14 x In magnetic trip window is the deciding spec for motor circuits. A 100 A B-curve breaker trips magnetically at 3–5 x In — 300–500 A — which a 30 kW motor's starting surge can exceed. The D-curve on this C120H holds through 1000–1400 A peak, so it clears only a hard short, not a healthy start. That's the difference between a breaker that stays in and one that drops a conveyor on every restart. ## Active production — no lifecycle worry Current production, no phase-out or NRND notice on this order code. The Acti9 C120H series is Schneider's standard high-current MCB line for distribution boards and sub-distribution panels. ## Dual-standard certification — what it covers Certified to both EN/IEC 60898-1 (the MCB standard for household and similar installations) and EN/IEC 60947-2 (the industrial circuit-breaker standard). The 60898-1 rating gives you the Icn of 15 kA at 400 V for general distribution; the 60947-2 ratings give you Icu values at higher fault levels — 30 kA at 240 V, 15 kA at 415 V — for industrial panels where the prospective short-circuit current is known.","metaTitle":"Schneider Electric A9N18524 Acti9 C120H MCB, 100 A D Curve 4","metaDescription":"Schneider Electric A9N18524 Acti9 C120H miniature circuit breaker, 100 A rated current, D curve, 4 poles, 15 kA breaking capacity at 400 V AC. Active production, sourced to order.","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":"A9N18524","Colour":"White","Height":"81 mm","Standards":"EN/IEC 60947-2 EN/IEC 60898-1","Curve code":"D","description":"C120H - circuit breaker - 4P - 100A - 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","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":"100 A at 30 °C","Overvoltage category":"IV","Trip unit technology":"Thermal-magnetic","Electrical durability":"5000 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":"NO"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$142.46","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b9ee24b1ec60b9a5a57563d143504042.pdf","sourceUrl":"https://www.se.com/ae/en/product/A9N18524/c120h-circuit-breaker-4p-100a-d-curve/"},"ai":{"faq":[{"question":"Where can I buy A9N18524 and get a price?","answer":"The A9N18524 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of the A9N18524 at 400 V?","answer":"The A9N18524 has a breaking capacity of 15 kA Icn at 400 V AC per EN/IEC 60898-1, and 15 kA Icu at 380–415 V AC per EN/IEC 60947-2."},{"question":"What does the D curve on this MCB mean?","answer":"The D curve means the magnetic trip is set at 10–14 times the rated current (1000–1400 A for this 100 A breaker), making it suitable for loads with high inrush current such as motors, transformers, and welding equipment."},{"question":"What compliance documentation does Schneider provide for A9N18524?","answer":"The A9N18524 carries dual certification to EN/IEC 60947-2 and EN/IEC 60898-1, pollution degree 3, overvoltage category IV, and tropicalisation class 2 per IEC 60068-1. IP20 finger protection per IEC 60529. Specific RoHS/REACH declarations are available from Schneider's documentation portal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9N18524","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/A9N18524 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}}