{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7463-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7463-8","canonicalUrl":"https://aoctrl.com/siemens/5SY7463-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7463-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7463-8, 4-pole D-curve miniature circuit breaker, 63 A at 35 °C, 15 kA breaking capacity, 400 V AC, 4-module width.","salesMarkdown":"The Siemens SENTRON 5SY7463-8 is a 4-pole miniature circuit breaker (MCB) with a D tripping characteristic, rated 63 A at 35 °C ambient and 400 V AC. It breaks fault currents up to 15 kA per both EN 60898 and IEC 60947-2, and the same 15 kA rating holds for DC faults per IEC 60947-2. The D-curve means it's built for loads with high inrush — think motor starting, transformers, or welding equipment. It tolerates a brief surge several times the 63 A rating without nuisance tripping, then clears a hard fault fast. That 15 kA SCCR gives you headroom for most industrial distribution panels without worrying about cascading failures upstream. Rated current derates with ambient temperature: 58.4 A at 45 °C, 56.83 A at 50 °C, 55.12 A at 55 °C, and 53.42 A at 60 °C. If your panel runs hot — and most do near the top of the enclosure — size your load against the derated number, not the 35 °C figure. Mounting position is any — vertical, horizontal, flat — which helps when you're squeezing breakers into a crowded panel. IP20 with connected conductors — fine inside a panel, not for washdown or outdoors without a secondary enclosure. Sealable, halogen-free, silicon-free construction matters for sensitive environments like food processing or semiconductor fabs where outgassing can't happen.","metaTitle":"Siemens 5SY7463-8 SENTRON MCB, 4P D-curve 63A 15kA","metaDescription":"Siemens SENTRON 5SY7463-8 miniature circuit breaker, 4-pole D-curve, 63A at 35°C, 15 kA breaking capacity per IEC/EN. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Width":"72 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"4","Type Of Voltage":"AC","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","acc. to IEC 81346-2":"F","at AC / rated value":"400 V","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Number Of Poles / Note":"4P","acc. to DIN EN 61346-2":"F","at 35 °C / rated value":"63 A","at 45 °C / rated value":"58.4 A","at 50 °C / rated value":"56.83 A","at 55 °C / rated value":"55.12 A","at 60 °C / rated value":"53.42 A","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"4","Tripping Characteristic Class":"D","acc. to EN 60898 / rated value":"15 kA","Position / Of Power Supply Cord":"Any","acc. to IEC 60947-2 / rated value":"15 kA","Product Feature / Touch Protection":"Yes","Supply Voltage Frequency / Rated Value":"50/60 Hz","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","at DC / acc. to IEC 60947-2 / rated value":"15 kA","at AC / acc. to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance / acc. to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Product Function / Neutral Conductor Switching":"No","with multi-phase operation / at AC / rated value":"440 V","operating voltage / at DC / rated value / maximum":"72 V","with single-phase operation / at AC / rated value":"440 V","Mechanical Service Life (Operating Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d099eadd2227254690f3d752f64088e3.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=460092&mlfb=5SY7463-8","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY7463-8/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7463-8","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/5SY7463-8 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}}