{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9N21543","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9N21543","canonicalUrl":"https://aoctrl.com/schneider/A9N21543","factsUrl":"https://aoctrl.com/api/mcp/products/A9N21543","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Clario iDPN miniature circuit-breaker, A9N21543, 2 A rated current, C curve, 1P+N, 4500 A breaking capacity at 230 V AC, clip-on DIN rail mount.","salesMarkdown":"The Schneider Electric A9N21543 is an iDPN miniature circuit-breaker from the Clario range, rated 2 A with a C curve and 1P+N configuration. The breaking capacity of 4500 A at 230 V AC is the maximum fault current it can safely interrupt — that's the standard residential/commercial level per EN/IEC 60898-1, fine for most distribution boards downstream of a higher-rated upstream breaker. The thermal-magnetic trip unit gives you the dual response: a bimetal for overloads and a solenoid for shorts. ## Where it goes in the panel Clip-on DIN rail mount, 18 mm wide — that's one modular pitch, so it takes up a single slot in a consumer unit or distribution board. The neutral is on the left, which matters for busbar alignment if you're populating a row of iDPN breakers. Tunnel terminals accept up to 16 mm² rigid or 10 mm² flexible, with a 2 N·m tightening torque and 13 mm strip length.","metaTitle":"A9N21543 iDPN MCB, 2 A, C Curve, 1P+N, Clario","metaDescription":"Schneider Electric A9N21543 iDPN miniature circuit-breaker, 2 A rated current, C curve, 1P+N, 4500 A breaking capacity at 230 V AC. Active lifecycle, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"78 mm","Range":"Clario","Width":"18 mm","Colour":"White","Height":"81 mm","Standards":"EN/IEC 60898-1","Curve code":"C","9 Mm Pitches":"2","Control type":"Toggle","Network type":"AC","Product name":"IDPN","Mounting mode":"Clip-on","Tropicalisation":"2 conforming to IEC 60068-1","lifecycle_stage":"current","Limitation class":"3 conforming to EN/IEC 60898-1","Local signalling":"ON/OFF indication","Mounting support":"DIN rail","Neutral position":"Left","Pollution degree":"3 conforming to IEC 60947-1","Range of product":"Clario","Breaking capacity":"4500 A Icn at 230 V AC 50/60 Hz conforming to EN/IEC 60898-1","Device short name":"iDPN","Network frequency":"50/60 Hz","Poles description":"1P + N","Relative humidity":"95 % at 55 °C","Tightening torque":"2 N.m","Device application":"Distribution","Operating altitude":"2000 m","[In] rated current":"2 A","Trip unit technology":"Thermal-magnetic","Electrical durability":"20000 cycles","Mechanical durability":"20000 cycles","Wire stripping length":"13 mm","Connections - terminals":"Tunnel type terminals downstream 0.33...10 mm² flexible Tunnel type terminals downstream 0.75...16 mm² rigid Tunnel type terminals upstream 0.33...10 mm² flexible Tunnel type terminals upstream 0.75...16 mm² rigid","IP degree of protection":"IP20 conforming to IEC 60529","Magnetic tripping limit":"5...10 x In","Earth-leakage protection":"Separate block","Number of protected poles":"1","Product or component type":"Miniature circuit-breaker","Suitability for isolation":"Yes","Contact position indicator":"Yes","Locking options description":"Padlocking device","[Ui] rated insulation voltage":"400 V AC 50/60 Hz conforming to IEC 60947-2","[Ue] rated operational voltage":"230 V AC 50/60 Hz between phase and neutral","Ambient air temperature for storage":"-40...70 °C","Ambient air temperature for operation":"-25...70 °C","[Ics] rated service breaking capacity":"4500 A 100 % x Icn at 230 V AC 50/60 Hz conforming to EN/IEC 60898-1","[Uimp] rated impulse withstand voltage":"4 kV conforming to IEC 60947-2"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.se.com/eg/en/product/A9N21543/idpn-circuit-breaker-idpn-1p-+-n-2a-c-curve/","alternativesUrl":"https://aoctrl.com/api/mcp/products/A9N21543/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy A9N21543 and what is the price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Current pricing and availability are confirmed at quote time — submit an RFQ for a firm quote."},{"question":"What are the key ratings for A9N21543?","answer":"Rated current 2 A, C curve, 1P+N poles, breaking capacity 4500 A at 230 V AC, thermal-magnetic trip, magnetic tripping limit 5...10 x In."},{"question":"What is the closest alternative to A9N21543?","answer":"Within the same iDPN family, the direct sibling is the same breaker at a different current rating — for example, a 6 A or 10 A version with the same C curve and 1P+N form factor. The physical footprint, terminal specs, and breaking capacity are identical; only the thermal trip threshold changes."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9N21543","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/A9N21543 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}}