{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4440-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4440-7","canonicalUrl":"https://aoctrl.com/siemens/5SL4440-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4440-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4440-7 miniature circuit breaker, 4-pole, C-curve, 40 A, 10 kA breaking capacity per EN 60898 and IEC 60947-2, 400 V AC, 4 MW.","salesMarkdown":"That dual rating means the same part meets the SCCR requirement for most sub-distribution boards and final-load circuits without needing a separate upstream current-limiting device. Multi-phase operation is rated at 440 V AC maximum, giving headroom above the nominal 400 V for voltage swell conditions. Mounting position is unrestricted, so the breaker can be installed horizontally or upside-down without derating the thermal-magnetic trip. IP20 with connected conductors — finger-safe from the front once wired, but not rated for washdown. Suitable for indoor panel use in residential buildings and infrastructure (schools, offices, light commercial). ## Power loss and supplementary devices Per-pole power loss at rated current in hot operating state is 3.3 W, so the total 4-pole dissipation is 13.2 W at full load.","metaTitle":"Siemens 5SL4440-7 SENTRON MCB, 4P C 40A 10kA 400V","metaDescription":"Siemens SENTRON 5SL4440-7 miniature circuit breaker, 4-pole, C-curve, 40 A, 10 kA breaking capacity at 400 V AC. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"72 mm","title":"5SL4440-7","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","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Energy Limitation Class":"3","Suitability For Operation":"Residential buildings/infrastructure","at DC rated value maximum":"72 V","Number Of Modular Width Units":"4","Tripping Characteristic Class":"C","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"10 kA","according to IEC 60947-2 rated value":"10 kA","Type Of Voltage Of The Operating Voltage":"AC","with multi-phase operation at AC maximum":"440 V","Value Range Of The Supply Voltage Frequency":"50/60 Hz","with multi-phase operation at AC rated value":"440 V","Mechanical Service Life (Operating 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":"3.3 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/718e46e478838c226725521b54130449.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=290824&mlfb=5SL4440-7"},"ai":{"faq":[{"question":"Where can I buy 5SL4440-7 and get a price?","answer":"The 5SL4440-7 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"Will 5SL4440-7 drop into a panel specified for 5SL4363-7 without rewiring?","answer":"No — the 5SL4363-7 is a 3-pole breaker (54 mm wide, 3 MW), while the 5SL4440-7 is 4-pole (72 mm wide, 4 MW). The width and pole count differ, so the panel busbar and wiring must be reconfigured for the fourth pole."},{"question":"What is the 5SL4440-7 depth?","answer":"The depth is 76 mm, with an installation depth of 70 mm."},{"question":"What compliance documentation is available for 5SL4440-7?","answer":"The part carries EN 60898 and IEC 60947-2 certification for breaking capacity. The SENTRON series is generally RoHS and REACH compliant; specific declarations are available from Siemens documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4440-7","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/5SL4440-7 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}}