{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7440-8CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7440-8CC","canonicalUrl":"https://aoctrl.com/siemens/5SY7440-8CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7440-8CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7440-8CC, miniature circuit breaker, 4-pole, D characteristic, 40 A rated at AC, 15 kA breaking capacity per IEC 60947-2, IP20.","salesMarkdown":"For UL 1077 / CSA C22.2 No. 235 listed applications, the interrupting rating is 5 kA — check your SCCR study if the installation is North American. The 40 A rating at 35 °C derates to 37.8 A at 40 °C, 36.64 A at 45 °C, 35.44 A at 50 °C, and 34.2 A at 55 °C; plan your continuous load against the panel ambient, not the shelf rating. Occupies 4 modular width units (72 mm wide, 90 mm tall, 76 mm deep, 70 mm installation depth). Mounts in any position via the quick-assembly fastening system — standard DIN rail. Combined terminal at top and bottom, touch-protected. Neutral conductor is not switched (4-pole with solid neutral). Sealable, halogen-free, silicon-free — suitable for food-and-bev or clean-room panel specs where outgassing matters. Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz. Humidity limits: max 95 % up to 55 °C, 55 % up to 70 °C, 35 % up to 75 °C.","metaTitle":"Siemens 5SY7440-8CC SENTRON MCB, D-curve 40 A 4-pole 15 kA","metaDescription":"Siemens 5SY7440-8CC SENTRON miniature circuit breaker, 40 A rated, D tripping characteristic, 4-pole, 15 kA IEC breaking capacity. Current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"72 mm","title":"5SY7440-8CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 15kA, 4-pole, D, 40 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"4P","Number Of Poles":"4","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","acc. to IEC 81346-2":"F","at AC / rated value":"40 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","acc. to DIN EN 61346-2":"F","at 35 °C / rated value":"40 A","at 40 °C / rated value":"37.8 A","at 45 °C / rated value":"36.64 A","at 50 °C / rated value":"35.44 A","at 55 °C / rated value":"34.2 A","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"4","Tripping Characteristic Class":"D","Position / Of Power Supply Cord":"Any","acc. to IEC 60947-2 / rated value":"15 kA","Product Feature / Touch Protection":"Yes","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","Type Of Voltage / Of The Operating Voltage":"AC","at AC / acc. to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance / acc. to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Product Component / Neutral Conductor Switching":"No","with multi-phase operation / at AC / rated value":"440 V","operating voltage / at DC / rated value / maximum":"72 V","with single-phase operation / at AC / rated value":"440 V","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1103990394f3500b29971ef4399c2928.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=47342&mlfb=5SY7440-8CC"},"ai":{"faq":[{"question":"What is the closest functional alternative to 5SY7440-8CC?","answer":"The 5SY7210-7CC is a 4-pole D-curve MCB from the same SENTRON family, but it's rated 10 A, not 40 A. It will not drop into a panel wired for 40 A without rewiring and resizing the feeder. For a 40 A D-curve 4-pole, this is the current production code."},{"question":"How do I get current pricing and availability for 5SY7440-8CC?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What compliance documentation does Siemens provide for 5SY7440-8CC?","answer":"The MCB carries IEC 60947-2 ratings (15 kA breaking capacity) and UL 1077 / CSA C22.2 No. 235 listing (5 kA). It is halogen-free and silicon-free, which supports RoHS/REACH compliance requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7440-8CC","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/5SY7440-8CC 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}}