{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4440-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4440-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SY4440-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4440-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4440-7CC, 4-pole miniature circuit breaker, C tripping characteristic, 40 A rated current (35 °C), 10 kA breaking capacity per EN 60898, 72 mm wide, 76 mm deep, 90 mm high.","salesMarkdown":"The Siemens 5SY4440-7CC is a SENTRON 4-pole miniature circuit breaker with a C-curve tripping characteristic, rated 40 A at 35 °C and delivering a 10 kA breaking capacity per EN 60898. The quick assembly system and any-position mounting simplify panel integration — no orientation restrictions. ## Thermal derating and environmental limits The 40 A rating holds at 35 °C ambient. Above that, derate stepwise: 38.12 A at 40 °C, 37.12 A at 45 °C, 36.12 A at 50 °C, and 35.08 A at 55 °C. The breaker operates from -40 °C to 75 °C, with humidity limits of 95% up to 55 °C, 55% up to 70 °C, and 35% at 75 °C. ## Construction and compliance Halogen-free and silicon-free construction. Sealable terminals (combined top and bottom) allow tamper-proofing after commissioning. IP20 with connected conductors. Energy limitation class 3. The breaker is designated F per EN 61346-2 and IEC 81346-2. Suitability for mechanical engineering and industry is stated. Neutral conductor is not switched — the 4-pole design switches all three phases plus a non-switched neutral.","metaTitle":"Siemens 5SY4440-7CC SENTRON MCB, 4P C 40A 10kA","metaDescription":"Siemens 5SY4440-7CC SENTRON miniature circuit breaker, 4-pole, C-curve, 40 A rated at 35 °C, 10 kA breaking capacity per EN 60898. Active production. Quoted on request.","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":"5SY4440-7CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 10kA, 4-pole, C, 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","at AC rated value":"40 A","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","at 35 °C rated value":"40 A","at 40 °C rated value":"38.12 A","at 45 °C rated value":"37.12 A","at 50 °C rated value":"36.12 A","at 55 °C rated value":"35.08 A","Energy Limitation Class":"3","according to EN 61346-2":"F","Combined Terminal Bottom":"Yes","according to IEC 81346-2":"F","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"4","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"C","according to EN 60898 rated value":"10 kA","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","Value Range Of The Supply Voltage Frequency":"50/60 Hz","operating voltage at DC rated value maximum":"72 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","at AC according to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Mechanical Service Life (Switching Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","power loss [W] for rated value of the current at AC in hot operating state per pole":"3.5 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/082f791c27b5eb5d17e4bc8bca767618.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=237115&mlfb=5SY4440-7CC"},"ai":{"faq":[{"question":"What is 5SY4440-7CC's listed depth (76 mm) on this component line?","answer":"The overall depth is 76 mm; the installation depth behind the panel is 70 mm."},{"question":"What is 5SY4440-7CC's listed width (72 mm) on this component line?","answer":"The width is 72 mm, which corresponds to 4 modular width units on a standard DIN rail."},{"question":"Will 5SY4440-7CC drop into a panel that was specified around 5SY4332-7CV without rewiring?","answer":"The 5SY4440-7CC is a 4-pole C-curve 40 A breaker; the 5SY4332-7CV is a different variant. Both share the same 72 mm width and DIN-rail mounting, but verify the tripping characteristic, pole count, and current rating against your original specification before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4440-7CC","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/5SY4440-7CC 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}}