{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4408-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4408-7","canonicalUrl":"https://aoctrl.com/siemens/5SL4408-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4408-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4408-7, 4-pole miniature circuit breaker, C-curve, 8 A (30 °C), 10 kA breaking capacity per EN 60898, 400 V AC, 4 MWU.","salesMarkdown":"The Siemens 5SL4408-7 is a SENTRON miniature circuit breaker — 4-pole, C-curve, rated 8 A at 30 °C with a 10 kA breaking capacity per EN 60898 and IEC 60947-2. The 400 V AC rated voltage and 440 V AC maximum multi-phase operation suit it for residential and infrastructure distribution boards where a C-curve handles moderate inrush from lighting or small motor loads. That's the standard choice for general-purpose distribution where you want to ride through motor starting or capacitor switching without nuisance trips. The 10 kA breaking capacity at 400 V AC per EN 60898 means it can safely interrupt a fault current up to that level; the same 10 kA per IEC 60947-2 gives you the rating under the industrial standard. Derate the 8 A at 30 °C to 7.39 A at 40 °C and 6.37 A at 55 °C — if the panel runs hot, the load limit drops. The 72 V DC maximum rating is for the DC side only, not the AC circuit. ## Integration notes Snap-on DIN rail mount, any orientation. Width 72 mm (4 MWU) means it fills four 18 mm slots in a standard enclosure. Halogen-free and silicon-free construction for environments sensitive to outgassing. Touch protection is built in. No neutral conductor switching — the 4th pole is a switched phase, not a switched neutral.","metaTitle":"Siemens 5SL4408-7 SENTRON MCB, 4P C-8A 10kA, 400V AC","metaDescription":"Siemens 5SL4408-7 SENTRON miniature circuit breaker, 4-pole, C-curve, 8 A rated at 30 °C, 10 kA breaking capacity per EN 60898. Active production, sourced to order against RFQ.","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":"5SL4408-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 10kA, 4-pole, C, 8A","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":"8 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":"8 A","at 40 °C / rated value":"7.39 A","at 45 °C / rated value":"7.04 A","at 55 °C / rated value":"6.37 A","Suitability For Operation":"Residential buildings/infrastructure","Number Of Modular Width Units":"4","Tripping Characteristic Class":"C","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=302376&mlfb=5SL4408-7"},"ai":{"faq":[{"question":"Where can I buy 5SL4408-7 and how do I get a price?","answer":"The 5SL4408-7 is sourced to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time."},{"question":"What is 5SL4408-7's listed depth?","answer":"The 5SL4408-7 has a depth of 76 mm, with an installation depth of 70 mm."},{"question":"What is 5SL4408-7's listed width?","answer":"The 5SL4408-7 has a width of 72 mm, which corresponds to 4 modular width units."},{"question":"What compliance documentation does Siemens provide for 5SL4408-7?","answer":"The 5SL4408-7 carries a 10 kA breaking capacity per EN 60898 and IEC 60947-2, is halogen-free and silicon-free, and is rated for pollution degree 2 and overvoltage category III. It is a current-production SENTRON catalog item."},{"question":"Will 5SL4408-7 drop into a panel specified around 5SL4363-7 without rewiring?","answer":"The 5SL4408-7 and 5SL4363-7 share the same SENTRON 5SL4 series footprint — both are 4-pole, 4 MWU, DIN-rail mounted. The 5SL4408-7 is a C-curve 8 A device; the 5SL4363-7 is a C-curve 63 A device. If the panel busbars and wiring are sized for 63 A, dropping in an 8 A breaker is electrically safe but the load circuit must be re-terminated for the lower rating. Physically, it fits the same slot."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4408-7","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/5SL4408-7 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}}