{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4401-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4401-8","canonicalUrl":"https://aoctrl.com/siemens/5SL4401-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4401-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4401-8, miniature circuit breaker, 4-pole, D characteristic, 1 A rated at 400 V AC, 10 kA breaking capacity per EN 60898, 4 MW wide.","salesMarkdown":"The Siemens SENTRON 5SL4401-8 is a 4-pole miniature circuit breaker with a D tripping characteristic, rated 1 A at 400 V AC. It breaks fault currents up to 10 kA per both EN 60898 and IEC 60947-2, which means it handles high inrush loads like motor starting or transformer energization without nuisance tripping — the D curve holds through the surge and only clears on sustained overloads or shorts. The D-curve trips magnetically between 10x and 20x In (10–20 A for this 1 A unit), so it's sized for loads with a high starting surge — think small motors, solenoid banks, or control transformers in a panel. At 40 °C ambient the continuous rating derates to 0.96 A; at 55 °C it's 0.9 A (–). The 4 MW width (72 mm,) snaps into a standard DIN rail; the 70 mm installation depth leaves room behind the gland plate for wiring. ## Deployment context The 5SL4401-8 is rated for residential buildings and infrastructure, but the D curve and 4-pole format put it in commercial and light industrial distribution boards too — anything needing a dedicated 3-phase + neutral branch with inrush tolerance. The -40 to +75 °C storage range covers unheated warehouses or roof-mounted enclosures.","metaTitle":"Siemens 5SL4401-8 SENTRON MCB, 1A D-Curve 4P 10kA 400V","metaDescription":"Siemens 5SL4401-8 SENTRON miniature circuit breaker, 1 A, D tripping characteristic, 4-pole, 10 kA breaking capacity per EN 60898. 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":"5SL4401-8","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 10kA, 4-pole, D, 1 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"4","Type Of Voltage":"AC","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breaker","acc. to IEC 81346-2":"F","at AC / rated value":"1 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Number Of Poles / Note":"4P","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","at 30 °C / rated value":"1 A","at 40 °C / rated value":"0.96 A","at 45 °C / rated value":"0.94 A","at 55 °C / rated value":"0.9 A","Suitability For Operation":"Residential buildings/infrastructure","Number Of Modular Width Units":"4","Tripping Characteristic Class":"D","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"10 kA","acc. to IEC 60947-2 / rated value":"10 kA","Product Feature / Touch Protection":"Yes","supply voltage / at AC / rated value":"400 V","Influence Of The Surrounding Temperature":"+55 °C, max. 95% humidity","with multi-phase operation / at AC / maximum":"440 V","Product Function / Neutral Conductor Switching":"No","with multi-phase operation / at AC / rated value":"440 V","Mechanical Service Life (Operating Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/9100e56a614e6ff3a5b83a05355de6a8.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=483759&mlfb=5SL4401-8"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SL4401-8?","answer":"10 kA per both EN 60898 and IEC 60947-2 at 400 V AC. That's the maximum fault current it can safely interrupt without upstream coordination issues."},{"question":"Where can I buy 5SL4401-8 and how is it quoted?","answer":"We source this part through independent distribution and quote it to order against an RFQ. Availability and current pricing are confirmed at quote time — no stock count or price is published here."},{"question":"What compliance documentation does Siemens provide for 5SL4401-8?","answer":"The part carries CE marking per the low-voltage directive, and is designed to EN 60898 and IEC 60947-2. RoHS and REACH declarations are standard for the SENTRON series; request them with your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4401-8","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/5SL4401-8 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}}