{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9F43403","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9F43403","canonicalUrl":"https://aoctrl.com/schneider/A9F43403","factsUrl":"https://aoctrl.com/api/mcp/products/A9F43403","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Acti9 iC60N, A9F43403, miniature circuit breaker, 4P, 3 A, B curve, 50 kA breaking capacity at 415 V AC, clip-on DIN rail mount.","salesMarkdown":"The Schneider Electric A9F43403 is an Acti9 iC60N miniature circuit breaker (MCB) with four protected poles, rated 3 A, B-curve tripping characteristic, and a 50 kA breaking capacity at 415 V AC. It clips onto a standard DIN rail — the 72 mm wide body (9 module pitches at 9 mm each) fits a panel cutout the same way every iC60N does, so if you're swapping an older 4P unit the footprint is a straight drop-in. Rated 3 A continuous, the B curve trips magnetically between 3.2 A and 3.6 A (4 x In ±20 %), which means it clears short-circuit faults fast on predominantly resistive or lighting loads where inrush isn't an issue. For a 4-pole breaker at this current, the thermal-magnetic trip unit handles overloads on all poles simultaneously. The 50 kA Icu at 380…415 V AC (EN/IEC 60947-2) is the headline number — it tells you this breaker can interrupt a 50 kA prospective fault current without welding its contacts, which is essential for high-fault panels close to the transformer. The same unit also carries a 10 kA Icn at 415 V per EN/IEC 60898-1, the domestic/commercial standard. Dual-rated like this means it's accepted in both industrial (60947-2) and building (60898-1) installations without a separate part number. ## Panel integration The 78.5 mm depth leaves clearance behind a standard 80 mm deep enclosure; the 85 mm height fits under a 90 mm top gland plate. Terminals accept 1…25 mm² rigid or 1…16 mm² flexible — strip 14 mm, torque to 2 N·m. IP20 finger-safe terminals.","metaTitle":"Schneider Electric A9F43403 Acti9 iC60N MCB, 3 A, 4P, B Curv","metaDescription":"Schneider Electric A9F43403 Acti9 iC60N miniature circuit breaker, 3 A rated, 4 poles, B curve, 50 kA breaking capacity at 415 V AC. Current production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"78.5 mm","Range":"Acti9","Width":"72 mm","Colour":"White","Height":"85 mm","Standards":"EN/IEC 60947-2 EN/IEC 60898-1","Curve code":"B","9 Mm Pitches":"8","Control type":"Toggle","Network type":"AC/DC","Product name":"Disbo iC60","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":"Trip indicator","Mounting support":"Rail","Pollution degree":"3 conforming to EN/IEC 60947-2","Breaking capacity":"50 kA Icu at 12...133 V AC 50/60 Hz conforming to EN/IEC 60947-2 50 kA Icu at 220...240 V AC 50/60 Hz conforming to EN/IEC 60947-2 50 kA Icu at 380...415 V AC 50/60 Hz conforming to EN/IEC 60947-2 25 kA Icu at 440 V AC 50/60 Hz conforming to EN/IEC 60947-2 10 kA Icu at 6000 A Icn at 415 V AC 50/60 Hz conforming to EN/IEC 60898-1","Device short name":"IC60N","Network frequency":"50/60 Hz","Poles description":"4P","Relative humidity":"95 % at 55 °C","Tightening torque":"2 N.m top or bottom","[In] rated current":"3 A","Trip unit technology":"Thermal-magnetic","Utilisation category":"Category A conforming to EN/IEC 60947-2","Electrical durability":"10000 cycles","Mechanical durability":"20000 cycles","Wire stripping length":"14 mm for top or bottom connection","Connections - terminals":"Single terminal (top or bottom) 1...25 mm² rigid Single terminal (top or bottom) 1...16 mm² flexible","IP degree of protection":"IP20 conforming to IEC 60529","Magnetic tripping limit":"4 x In +/- 20 %","Earth-leakage protection":"Separate block","Provision for padlocking":"Padlockable","Number of protected poles":"4","Product or component type":"Miniature circuit-breaker","Contact position indicator":"Yes","[Ui] rated insulation voltage":"500 V AC 50/60 Hz conforming to EN/IEC 60947-2","[Ue] rated operational voltage":"12...133 V AC 50/60 Hz 220...240 V AC 50/60 Hz 380...415 V AC 50/60 Hz 440 V AC 50/60 Hz <= 250 V DC","Ambient air temperature for storage":"-40...85 °C","Ambient air temperature for operation":"-35...70 °C","[Ics] rated service breaking capacity":"50 kA 100 % conforming to EN/IEC 60947-2 - 12...133 V AC 50/60 Hz 50 kA 100 % conforming to EN/IEC 60947-2 - 220...240 V AC 50/60 Hz 50 kA 100 % conforming to EN/IEC 60947-2 - 380...415 V AC 50/60 Hz 25 kA 100 % conforming to EN/IEC 60947-2 - 440 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"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/8d94cdd2295914260243818015f3a7cc.pdf","sourceUrl":"https://www.se.com/sg/en/product/A9F43403/miniature-circuit-breaker-mcb-acti9-ic60n-disbo-4p-3a-b-curve-6000a-iec-en-608981-50ka-iec-en-609472/","alternativesUrl":"https://aoctrl.com/api/mcp/products/A9F43403/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of the A9F43403 at 415 V?","answer":"50 kA Icu at 380…415 V AC per EN/IEC 60947-2, and 10 kA Icn at 415 V per EN/IEC 60898-1. The dual rating covers both industrial and commercial installations."},{"question":"Where can I buy the A9F43403 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no minimum order quantity restrictions."},{"question":"What is the closest alternative to the A9F43403 in the Acti9 family?","answer":"The iC60N range shares the same footprint and terminal layout across all current ratings. A 4P iC60N with a different curve (C or D) or higher amp rating would be the direct parametric alternative, but the B-curve 3 A is specific to low-current resistive/lighting duty — swapping to a C curve changes the magnetic trip threshold to 5-10 x In."},{"question":"What compliance documentation does the A9F43403 carry?","answer":"Certified to EN/IEC 60947-2 and EN/IEC 60898-1. Tropicalisation class 2 per IEC 60068-1. IP20 per IEC 60529. Pollution degree 3 per EN/IEC 60947-2."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9F43403","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/A9F43403 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}}