{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4263-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4263-7","canonicalUrl":"https://aoctrl.com/siemens/5SL4263-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4263-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4263-7, miniature circuit breaker, 2-pole, C-curve, 63 A, 10 kA breaking capacity at 400 V AC, 2 MW units wide, IP20.","salesMarkdown":"## Part identity and key ratings The Siemens 5SL4263-7 is a 2-pole miniature circuit breaker from the SENTRON series, rated 63 A with a C tripping characteristic and a 10 kA breaking capacity at 400 V AC per EN 60898 and IEC 60947-2. At 40 °C ambient the continuous current derates to 59.67 A; at 55 °C it drops to 54.29 A, so a panel near a furnace wall or roof should account for the thermal headroom. Mountable in any position, sealable for tamper-proofing, and halogen-free / silicon-free for use in environments sensitive to outgassing (clean rooms, food processing, marine). ## Electrical coordination","metaTitle":"Siemens 5SL4263-7 SENTRON MCB, 2P C 63 A, 10 kA","metaDescription":"Siemens 5SL4263-7 SENTRON miniature circuit breaker, 2-pole, C-curve, 63 A, 10 kA at 400 V AC. Current production, available to order. IP20, halogen-free, sealable.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"2P","Number Of Poles":"2","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breaker","at AC / rated value":"63 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Energy Limitation Class":"3","according to EN 61346-2":"F","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","according to IEC 81346-2":"F","Suitability For Operation":"Residential buildings/infrastructure","Number Of Modular Width Units":"2","Tripping Characteristic Class":"C","at DC / rated value / maximum":"72 V","according to EN 60898 / rated value":"10 kA","supply voltage / at AC / rated value":"400 V","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 (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/69e2b11521f3800911eef4d09f2a0d3b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=449070&mlfb=5SL4263-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL4263-7/alternatives.json"},"ai":{"faq":[{"question":"What is 5SL4263-7's listed depth (76 mm) on this component line?","answer":"The overall depth is 76 mm; the installation depth (into the panel) is 70 mm."},{"question":"What is 5SL4263-7's listed width (36 mm) on this component line?","answer":"The width is 36 mm, which corresponds to 2 modular width units on a standard DIN rail."},{"question":"Will 5SL4263-7 drop into a panel that was specified around 5SL6550-7BB without rewiring?","answer":"Both are 2-pole SENTRON MCBs with the same 2 MW form factor (36 mm wide), so the physical footprint is identical. Verify the current rating and trip curve of the 5SL6550-7BB against the 63 A C-curve of the 5SL4263-7 before drop-in replacement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4263-7","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/5SL4263-7 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}