{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"A9F03740","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"A9F03740","canonicalUrl":"https://aoctrl.com/schneider/A9F03740","factsUrl":"https://aoctrl.com/api/mcp/products/A9F03740","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Acti9 iC60N, miniature circuit breaker, A9F03740, 40 A, 3P+N, curve B, 36 kA breaking capacity, DIN rail mount.","salesMarkdown":"The Schneider Electric A9F03740 is an Acti9 iC60N miniature circuit breaker rated 40 A with a B-curve trip characteristic, 3 protected poles plus neutral (3P+N). It carries dual certification to EN/IEC 60898-1 and EN/IEC 60947-2, meaning it qualifies for both residential and industrial distribution panel duty. Breaking capacity is the headline spec here: 36 kA Icu at 12…133 V AC, 20 kA at 220…240 V, 10 kA at 380…415 V, and 6 kA at 440 V under IEC 60947-2. For the 60898-1 rating it delivers 6000 A Icn at 400 V. The B-curve trips magnetically at 4 x In ±20 %. It suits resistive and general-purpose loads with low inrush. Thermal-magnetic trip technology means the bimetal element handles overload protection (time-delayed, inversely proportional to current) while the solenoid handles short-circuit interruption. The 3P+N configuration switches all three phases and breaks the neutral pole, though the neutral is not protected — it is a switched neutral, not a monitored pole. ## DIN-rail panel integration The 72 mm width (8 x 9 mm pitches) occupies three modular spaces plus one for the switched neutral. Double terminals top and bottom accept 1…35 mm² rigid or 1…25 mm² flexible cable; tightening torque 3.5 N.m. Strip length 14 mm. The IP20 finger-safe terminals suit enclosed panel use — not for exposed outdoor installation without an enclosure. Dual-certified to EN/IEC 60898-1 (the household-standard for MCBs) and EN/IEC 60947-2 (the industrial-standard for low-voltage switchgear). Suitability for isolation is affirmed under both standards, meaning the breaker can serve as a visible-break disconnect when locked off. The contact position indicator (red/green flag on the toggle) gives visual confirmation of the contact state. Rated for AC and DC networks at 50/60 Hz. Earth-leakage protection requires a separate Vigi iC60 block — it is not integral. The limitation class 3 rating under 60898-1 means it limits let-through energy well, reducing stress on downstream equipment during a fault.","metaTitle":"Schneider Electric A9F03740 Acti9 iC60N MCB, 40 A, 3P+N, Cur","metaDescription":"Schneider Electric A9F03740 Acti9 iC60N miniature circuit breaker, 40 A rated current, 3P+N, curve B, 36 kA breaking capacity. Sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"78.5 mm","Range":"Acti9","Width":"72 mm","Colour":"White","Height":"91 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":"Acti9 iC60","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":"DIN rail","Neutral position":"Left","Pollution degree":"3 conforming to EN/IEC 60947-2","Breaking capacity":"36 kA Icu at 12...133 V AC 50/60 Hz conforming to EN/IEC 60947-2 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 6 kA Icu at 440 V AC 50/60 Hz conforming to EN/IEC 60947-2 6000 A Icn at 400 V AC 50/60 Hz conforming to EN/IEC 60898-1","Device short name":"IC60N","Network frequency":"50/60 Hz","Poles description":"3P + N","Relative humidity":"95 % at 55 °C","Tightening torque":"3.5 N.m top or bottom","Device application":"Distribution","[In] rated current":"40 A","Overvoltage category":"IV","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":"Double terminal (top or bottom) 1...35 mm² rigid Double terminal (top or bottom) 1...25 mm² flexible","IP degree of protection":"IP20 conforming to IEC 60529","Magnetic tripping limit":"4 x In +/- 20 %","Earth-leakage protection":"Separate block","Number of protected poles":"3","Product or component type":"Miniature circuit-breaker","Suitability for isolation":"Yes conforming to EN/IEC 60898-1 Yes conforming to EN/IEC 60947-2","Contact position indicator":"Yes","[Ui] rated insulation voltage":"500 V AC 50/60 Hz conforming to EN/IEC 60947-2","Ambient air temperature for storage":"-40...85 °C","Ambient air temperature for operation":"-35...70 °C","[Ics] rated service breaking capacity":"27 kA 75 % conforming to EN/IEC 60947-2 - 12...133 V AC 50/60 Hz 15 kA 75 % conforming to EN/IEC 60947-2 - 220...240 V AC 50/60 Hz 7.5 kA 75 % conforming to EN/IEC 60947-2 - 380...415 V AC 50/60 Hz 4.5 kA 75 % conforming to EN/IEC 60947-2 - 440 V AC 50/60 Hz","[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/36dd464d30ac9f4e3b9d09870ff7645f.pdf","sourceUrl":"https://www.se.com/sg/en/product/A9F03740/miniature-circuit-breaker-mcb-acti9-ic60n-3p+n-40a-b-curve-6000a-iec-608981-10ka-iec-609472-double-term-/","alternativesUrl":"https://aoctrl.com/api/mcp/products/A9F03740/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of the A9F03740?","answer":"The A9F03740 delivers 36 kA Icu at 12…133 V AC, 20 kA at 220…240 V, 10 kA at 380…415 V, and 6 kA at 440 V under IEC 60947-2. Under IEC 60898-1 it is rated 6000 A Icn at 400 V."},{"question":"What is the A9F03740 used for?","answer":"The A9F03740 is a 40 A B-curve miniature circuit breaker for distribution applications — typically protecting lighting circuits, heating loads, and general-purpose sub-feeds in commercial or industrial panels. It is not intended for motor starting duty."},{"question":"What compliance documentation does the A9F03740 carry?","answer":"The A9F03740 is dual-certified to EN/IEC 60898-1 and EN/IEC 60947-2. It is rated for isolation under both standards, pollution degree 3, overvoltage category IV, and tropicalisation class 2. IP20 finger-safe terminals."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/A9F03740","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/A9F03740 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}}