{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4463-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4463-8","canonicalUrl":"https://aoctrl.com/siemens/5SL4463-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4463-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4463-8 miniature circuit breaker, 4-pole, D tripping characteristic, 63 A rated current, 10 kA breaking capacity at 400 V AC.","salesMarkdown":"The Siemens 5SL4463-8 is a SENTRON miniature circuit breaker — 4-pole, D-curve, 63 A, with a 10 kA breaking capacity at 400 V AC per EN 60898 and IEC 60947-2. Rated 63 A at 30 °C, it derates to 59.67 A at 40 °C and 54.29 A at 55 °C — the thermal curve is baked into the bimetal, so if your panel ambient runs hot, size the upstream protection for the derated value, not the nameplate. The 4-pole design switches all phases plus neutral (no switched neutral component, but the neutral pole is a solid bar on this variant — check the order code if you need a switched neutral). Mounts in any position on standard DIN rail. At 4 modular width units (72 mm wide, 90 mm tall, 76 mm deep plus 70 mm installation depth behind the panel face), it fits a standard distribution board slot. Sealable per the spec, so a panel builder can lock the toggle position after commissioning.","metaTitle":"Siemens 5SL4463-8 SENTRON MCB, 4P D 63A, 10kA","metaDescription":"Siemens 5SL4463-8 SENTRON miniature circuit breaker, 4-pole, D-curve, 63 A, 10 kA breaking capacity per EN 60898. Active production, sourced to order. Request quote.","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":"5SL4463-8","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 10kA, 4-pole, D, 63 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","acc. to IEC 81346-2":"F","at AC / rated value":"63 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","at 30 °C / rated value":"63 A","at 40 °C / rated value":"59.67 A","at 45 °C / rated value":"57.96 A","at 55 °C / rated value":"54.29 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","Type Of Voltage / Of The Operating Voltage":"AC","with multi-phase operation / at AC / maximum":"440 V","Product Component / Neutral Conductor Switching":"No","with multi-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/ce64f1d4326837315a4c1ad6bff0003a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=325895&mlfb=5SL4463-8"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SL4463-8?","answer":"10 kA at 400 V AC, rated per both EN 60898 and IEC 60947-2 — the same figure under both standards, so it coordinates without ambiguity in a distribution board."},{"question":"What does the D-curve mean for this breaker?","answer":"The D tripping characteristic allows magnetic trip at 10–20 times rated current, so it handles high inrush from motors, transformers, or welding equipment without nuisance tripping on startup."},{"question":"Where can I buy 5SL4463-8 and how is it quoted?","answer":"Sourced to order through independent distribution. Submit an RFQ for current pricing and availability — no stock count or price is published here."},{"question":"Will 5SL4463-8 drop into a panel specified around 5SL3340-7CC without rewiring?","answer":"Both are 4-pole SENTRON MCBs on the same DIN-rail footprint, so the mechanical fit is identical. The 5SL3340-7CC is a 40 A C-curve variant; the 5SL4463-8 is 63 A D-curve — verify the load-side protection coordination and cable sizing before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4463-8","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/5SL4463-8 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}}