{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9N19803","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9N19803","canonicalUrl":"https://aoctrl.com/schneider/A9N19803","factsUrl":"https://aoctrl.com/api/mcp/products/A9N19803","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Acti9 C120H, miniature circuit breaker, 4P, 63 A, C curve, 10 kA breaking capacity at 400 V AC.","salesMarkdown":"The A9N19803 is a 4-pole miniature circuit breaker from the Acti9 C120H series, rated 63 A at 30 °C with a C curve (magnetic tripping between 5 and 10 times In). The 10 kA breaking capacity at 400 V AC (Icn per EN/IEC 60898-1 and GB/T 10963.1) means it can safely interrupt a fault current up to that level without welding the contacts or cascading upstream; in a distribution board that's adequate for most residential and light commercial service entrances where the prospective short-circuit current stays under 10 kA. If your circuit has motor or transformer loads with higher starting surges, you'd normally step to a D curve; the C120H family does include D-curve variants, but this specific order code is C. The thermal-magnetic trip unit gives you inverse-time overload protection (bimetal strip) plus instantaneous magnetic trip at 5–10 x In. Strip length is 14 mm. The contact position indicator and ON/OFF local signalling are useful during panel commissioning and troubleshooting — you can see the state without needing a multimeter. ## Standards & approvals The part is certified to EN/IEC 60898-1 and GB/T 10963.1 — the Chinese GB standard mirrors the IEC one, so it's accepted in both European and Chinese distribution boards.","metaTitle":"A9N19803 Acti9 C120H MCB 4P 63A C Curve 10kA","metaDescription":"A9N19803 Acti9 C120H 4P 63A C-curve MCB, 10kA breaking capacity at 400V AC. Obsolete — sourced to order against RFQ via independent channels.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"73 mm","Range":"Acti9","Height":"81 mm","Standards":"GB/T 10963.1 EN/IEC 60898-1","Curve code":"C","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":"10 kA Icn at 400 V AC 50/60 Hz conforming to EN/IEC 60898-1 10 kA Icn at 400 V AC 50/60 Hz conforming to GB/T 10963.1","Device short name":"C120H","Network frequency":"50/60 Hz","Poles description":"4P","Tightening torque":"Power circuit: 3.5 N.m","Device application":"Distribution","[In] rated current":"63 A at 30 °C","Trip unit technology":"Thermal-magnetic","Electrical durability":"10000 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":"5...10 x In conforming to GB/T 10963.1","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/A9N19803/miniature-circuit-breaker-mcb-acti9-c120h-4p-63a-c-curve-10ka-iec-en-609472/","alternativesUrl":"https://aoctrl.com/api/mcp/products/A9N19803/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy A9N19803?","answer":"We source it to order through independent distribution channels. Submit an RFQ and we'll confirm availability and current pricing at quote time — no stock count or lead-time number on the page, but we can typically locate units from regional surplus inventories."},{"question":"What is the breaking capacity of A9N19803?","answer":"10 kA Icn at 400 V AC, 50/60 Hz, conforming to EN/IEC 60898-1 and GB/T 10963.1. That's the maximum fault current the breaker can safely interrupt at its rated voltage."},{"question":"What is the closest alternative to A9N19803 in the same family?","answer":"Within the Acti9 C120H range, the current-production equivalent would be a 4P, 63 A, C-curve variant with the same 10 kA breaking capacity. The exact order code depends on the latest Schneider catalog revision; check the current Acti9 selector or contact us with your BOM and we'll cross-reference it."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9N19803","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/A9N19803 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}}