{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4263-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4263-6","canonicalUrl":"https://aoctrl.com/siemens/5SL4263-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4263-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4263-6, miniature circuit breaker, 2-pole, B characteristic, 63 A rated current, 10 kA breaking capacity per EN 60898, 400 V AC.","salesMarkdown":"The Siemens 5SL4263-6 is a SENTRON miniature circuit breaker (MCB) in a 2-pole, B-curve configuration rated at 63 A continuous at 30 °C, with a 10 kA breaking capacity per EN 60898 and IEC 60947-2. At 40 °C ambient the continuous rating derates to 59.67 A; at 55 °C it drops to 54.29 A — factor that into the load schedule if the panel runs hot. Same part, different passport — if you are sourcing cross-border, the 5SL4263-6 carries the same genuine Siemens build regardless of which authorized region it ships from. The manufacturer warranty geofencing is real; let me be transparent — if warranty territory matters to your compliance team, flag it on the RFQ and we will route from the matching region.","metaTitle":"Siemens 5SL4263-6 SENTRON MCB, 2P B 63A 10kA","metaDescription":"Siemens 5SL4263-6 SENTRON miniature circuit breaker, 2-pole, B-curve, 63 A rated, 10 kA breaking capacity per EN 60898. Active production, sourced to order.","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","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":"2","Tripping Characteristic Class":"B","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,"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=36603&mlfb=5SL4263-6","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL4263-6/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4263-6","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/5SL4263-6 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}}