{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9N18345","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9N18345","canonicalUrl":"https://aoctrl.com/schneider/A9N18345","factsUrl":"https://aoctrl.com/api/mcp/products/A9N18345","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Acti9 C120N miniature circuit breaker, A9N18345, 80 A rated current, B curve, 2-pole, 10 kA breaking capacity at 400 V AC, thermal-magnetic trip, clip-on DIN rail mount.","salesMarkdown":"## 80 A B-curve MCB for distribution panels The Schneider Electric A9N18345 is an Acti9 C120N miniature circuit breaker rated at 80 A with a B-curve trip characteristic, 2-pole configuration, and a 10 kA breaking capacity at 400 V AC. Rated 80 A at 30 °C, the breaker handles continuous distribution loads up to that current. The thermal-magnetic trip unit combines a bimetal strip for overload protection and a solenoid for short-circuit response. ## Breaking capacity and dual-standard certification The A9N18345 carries dual certification to EN/IEC 60898-1 and EN/IEC 60947-2, meaning it qualifies as both a domestic MCB and an industrial circuit breaker. The Icn rating is 10 kA at 400 V AC under 60898-1; the Icu rating reaches 10 kA at 380–415 V AC and 20 kA at 220–240 V AC under 60947-2. Width is 54 mm (6 x 9 mm pitches), height 81 mm, depth 73 mm — occupies two standard module spaces in a distribution board. Tunnel terminals accept 1 to 50 mm² rigid or 1.5 to 35 mm² flexible conductors. Neutral position is on the left.","metaTitle":"Schneider Electric A9N18345 Acti9 C120N MCB, 80 A, B Curve,","metaDescription":"Schneider Electric A9N18345 Acti9 C120N miniature circuit breaker, 80 A rated current, B curve, 2-pole, 10 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":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"73 mm","Range":"Acti9","Width":"54 mm","title":"A9N18345","Colour":"White","Height":"81 mm","Standards":"EN/IEC 60898-1 EN/IEC 60947-2","Curve code":"B","description":"Miniature circuit breaker (MCB), Acti9 C120N, 2P, 80A, B curve, 10000A (IEC/EN 60898-1), 10kA (IEC/EN 60947-2)","9 Mm Pitches":"6","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":"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 10 kA Icu at 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","Device short name":"C120N","Network frequency":"50/60 Hz","Poles description":"2P","Relative humidity":"95 % at 55 °C","Tightening torque":"3.5 N.m","Device application":"Distribution","Operating altitude":"2000 m","[In] rated current":"80 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":"3...5 x In","Earth-leakage protection":"Separate block","Number of protected poles":"2","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 - <= 250 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/f0a1354c1b4e790b718f73048d1ae902.pdf","sourceUrl":"https://www.se.com/za/en/product/A9N18345/miniature-circuit-breaker-mcb-acti9-c120n-2p-80a-b-curve-10000a-iec-en-608981-10ka-iec-en-609472/"},"ai":{"faq":[{"question":"What is A9N18345's breaking capacity at 400 V?","answer":"The A9N18345 has a breaking capacity of 10 kA Icn at 400 V AC 50/60 Hz conforming to EN/IEC 60898-1, and 10 kA Icu at 380–415 V AC conforming to EN/IEC 60947-2."},{"question":"What standards does the A9N18345 comply with?","answer":"The A9N18345 complies with EN/IEC 60898-1 and EN/IEC 60947-2, giving it dual certification for both domestic and industrial circuit-breaker applications."},{"question":"What is the rated current of the A9N18345?","answer":"The A9N18345 has a rated current of 80 A at 30 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9N18345","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/A9N18345 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}}