{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9N19863","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9N19863","canonicalUrl":"https://aoctrl.com/schneider/A9N19863","factsUrl":"https://aoctrl.com/api/mcp/products/A9N19863","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Acti9 C120L miniature circuit breaker, A9N19863, 4P, 125 A, D curve, 15 kA breaking capacity at 400 V AC, thermal-magnetic trip unit.","salesMarkdown":"The Schneider Electric A9N19863 is a 4-pole Acti9 C120L miniature circuit breaker rated 125 A at 30 °C with a D curve. That D-curve magnetic trip — 10 to 14 × In per GB/T 10963.1, or 12 × In ±20 % per GB/T 14048.2 — means it holds through motor inrush and high-starting-current loads without nuisance tripping. Clip-on mounting to DIN rail, 12 module pitches wide (9 mm each — 108 mm total). The tunnel terminals accept 1 to 50 mm² rigid or 1.5 to 35 mm² flexible, with a tightening torque of 3.5 N·m. Strip 14 mm of insulation. That 4-pole footprint fits a standard panel layout; watch the fill factor if you're packing multiple high-current breakers — 125 A continuous through each pole generates heat that needs breathing room inside the enclosure. Rated operational voltage 400 V AC, insulation voltage 500 V AC, impulse withstand 6 kV. Electrical endurance 5000 cycles, mechanical 20,000 cycles. Suitability for isolation is marked — the toggle and contact-position indicator give visible break confirmation. Thermal-magnetic trip technology covers both overload (thermal bimetal) and short-circuit (solenoid) protection in one unit.","metaTitle":"A9N19863 Acti9 C120L MCB 4P 125A D Curve, 15 kA","metaDescription":"A9N19863 Acti9 C120L miniature circuit breaker, 4P, 125 A, D curve, 15 kA breaking capacity at 400 V AC. Active production. Available 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","Height":"81 mm","Standards":"GB 10963.1 EN/IEC 60898-1 GB/T 14048.2 EN/IEC 60947-2","Curve code":"D","9 Mm Pitches":"12","Control type":"Toggle","Network type":"AC","Product name":"C120","Mounting mode":"Clip-on","lifecycle_stage":"current","Local signalling":"ON/OFF indication","Mounting support":"DIN rail","Range of product":"Acti9","Breaking capacity":"15 kA Icn at 400 V AC 50/60 Hz conforming to EN/IEC 60898-1 15 kA Icn at 400 V AC 50/60 Hz conforming to GB/T 10963.1 15 kA Icu at 400 V AC 50/60 Hz conforming to EN/IEC 60947-2 15 kA Icu at 400 V AC 50/60 Hz conforming to GB/T 14048.2","Device short name":"C120L","Network frequency":"50/60 Hz","Poles description":"4P","Tightening torque":"Power circuit: 3.5 N.m","Device application":"Distribution","[In] rated current":"125 A at 30 °C","Trip unit technology":"Thermal-magnetic","Electrical durability":"5000 cycles","Mechanical durability":"20000 cycles","Wire stripping length":"Power circuit: 14 mm","Connections - terminals":"Tunnel type terminals top or bottom 1...50 mm² rigid without cable end Tunnel type terminals top or bottom 1.5...35 mm² flexible with or without cable end","Magnetic tripping limit":"10...14 x In conforming to GB/T 10963.1 12 x In +/- 20 % conforming to GB/T 14048.2","Number of protected poles":"4","Product or component type":"Miniature circuit-breaker","Suitability for isolation":"Yes","Contact position indicator":"Yes","[Ui] rated insulation voltage":"500 V AC 50/60 Hz","[Ue] rated operational voltage":"400 V","Ambient air temperature for storage":"-40...80 °C","Ambient air temperature for operation":"-30...70 °C","[Uimp] rated impulse withstand voltage":"6 kV"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.se.com/be/en/product/A9N19863/miniature-circuit-breaker-mcb-acti9-c120l-4p-125a-c-curve-10ka-iec-en-609472/","alternativesUrl":"https://aoctrl.com/api/mcp/products/A9N19863/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for A9N19863?","answer":"Pricing and availability are confirmed at quote time against an RFQ. Submit a request through the storefront; the part is sourced through independent distribution channels."},{"question":"What is the closest alternative to A9N19863 in the Acti9 family?","answer":"Within the Acti9 C120L range, the primary variant difference is the trip curve. The A9N19863 is a 125 A, 4P, D-curve breaker. If your load does not require the high magnetic trip of the D curve — for example, resistive or general-purpose distribution — a C-curve variant (same frame, same breaking capacity) would be the direct alternative. No pin-compatible drop-in exists outside the Acti9 C120L family without re-evaluating the panel layout."},{"question":"What is A9N19863's listed depth?","answer":"The A9N19863 has a depth of 73 mm, a height of 81 mm, and occupies 12 module pitches (9 mm each) on DIN rail."},{"question":"What compliance documentation does Schneider Electric provide for A9N19863?","answer":"The A9N19863 is certified to GB 10963.1, EN/IEC 60898-1, GB/T 14048.2, and EN/IEC 60947-2. These standards cover both residential and industrial circuit-breaker requirements. The manufacturer typically provides a declaration of conformity covering the applicable directives; specific RoHS/REACH declarations are available from Schneider Electric's documentation portal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9N19863","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/A9N19863 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}}