{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4263-7CC11","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4263-7CC11","canonicalUrl":"https://aoctrl.com/siemens/5SY4263-7CC11","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4263-7CC11","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON miniature circuit breaker, 5SY4263-7CC11, 2-pole, 63 A rated current at 35 °C, C tripping characteristic, 10 kA breaking capacity per EN 60898, designed for railway applications.","salesMarkdown":"## Temperature derating — what 63 A means at panel ambient The 63 A rating is at 35 °C ambient. At 40 °C it derates to 60.04 A, at 45 °C to 58.46 A, at 50 °C to 56.89 A, at 55 °C to 55.25 A, and at 60 °C to 53.55 A. If your panel runs warm — say 50 °C inside a sealed enclosure — you're effectively limited to 56.89 A continuous. Plan your load accordingly; don't size the breaker at 63 A and expect it to carry that in a hot cabinet. The quick assembly system means it snaps onto the DIN rail and can be ganged with busbars without tools — a time-saver when populating a multi-way distribution board.","metaTitle":"Siemens SENTRON 5SY4263-7CC11 MCB, 63 A, 2-pole, C-curve, 10","metaDescription":"Siemens SENTRON 5SY4263-7CC11 miniature circuit breaker, 63 A rated at 35 °C, 2-pole, tripping characteristic C, 10 kA breaking capacity per EN 60898. Designed for railway applicat","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"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","Number Of Poles":"2","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":"63 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Design Of The Product":"For railway applications","Number Of Poles / Note":"2P","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","at 35 °C / rated value":"63 A","at 40 °C / rated value":"60.04 A","at 45 °C / rated value":"58.46 A","at 50 °C / rated value":"56.89 A","at 55 °C / rated value":"55.25 A","at 60 °C / rated value":"53.55 A","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"2","Tripping Characteristic Class":"C","acc. to EN 60898 / rated value":"10 kA","Position / Of Power Supply Cord":"Any","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","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 (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/a4358f7a70df35d00964063de0c00485.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=59242&mlfb=5SY4263-7CC11","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY4263-7CC11/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SY4263-7CC11 and how do I get a price?","answer":"Sourced through independent distribution channels. Submit an RFQ — availability and current pricing are confirmed at quote time."},{"question":"What is 5SY4263-7CC11's depth?","answer":"The listed depth is 76 mm, with an installation depth of 70 mm."},{"question":"Will 5SY4263-7CC11 drop into a panel specified around 5SY5240-7 without rewiring?","answer":"Both are 2-pole SENTRON MCBs with the same 36 mm width (2 MW), same DIN-rail mounting, and same terminal arrangement. The 5SY4263-7CC11 is a 63 A C-curve; the 5SY5240-7 is a 40 A C-curve. If the panel busbars and load wiring are rated for 63 A, direct swap is possible — otherwise the upstream protection and conductor sizing must be verified."},{"question":"What compliance documentation does Siemens provide for 5SY4263-7CC11?","answer":"The product carries IEC 60898 certification for the 10 kA breaking capacity and is designed for railway applications. Standard Siemens declarations for RoHS and REACH are available on request. The IP20 rating with connected conductors indicates finger-safe terminals per IEC 60529."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4263-7CC11","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/5SY4263-7CC11 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}}