{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7663-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7663-7","canonicalUrl":"https://aoctrl.com/siemens/5SY7663-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7663-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7663-7 miniature circuit breaker, 4-pole (3P+N), 63 A rated, C tripping characteristic, 15 kA per EN 60898, 20 kA per IEC 60947-2.","salesMarkdown":"## Siemens 5SY7663-7 — 63 A 4-Pole C-Curve MCB, Current Production The C-curve trips between 5× and 10× In, so at 63 A that's 315–630 A magnetic trip — sized for motor-starting inrush or moderate transformer loads where a B-curve would nuisance-trip, but not as high as a D-curve for heavy inductive kicks. ## Temperature Derating & Ambient Limits Full 63 A rating holds at 35 °C ambient. At 45 °C it derates to 58.4 A, at 50 °C to 56.83 A, at 55 °C to 55.12 A, and at 60 °C to 53.42 A. The maximum operating ambient is 75 °C, minimum -40 °C — wide enough for unheated enclosures in northern climates or hot machine cabinets. Humidity limits: max 95% up to 55 °C, tapering to 55% at 70 °C and 35% at 75 °C. ## Installation & Panel Fit Depth 76 mm, width 72 mm (4 modular width units), height 90 mm, installation depth 70 mm. Sealable, halogen-free, silicon-free construction.","metaTitle":"Siemens 5SY7663-7 SENTRON MCB, 63A 4P C-Curve 15kA","metaDescription":"Siemens 5SY7663-7 SENTRON miniature circuit breaker, 63 A rated, 4-pole (3P+N), C tripping characteristic, 15 kA (EN 60898) / 20 kA (IEC 60947-2). Current production. Quoted on req","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","Design Of Pole":"3P+N","Number Of Poles":"4","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","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","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":"C","acc. to EN 60898 / rated value":"15 kA","Position / Of Power Supply Cord":"Any","acc. to IEC 60947-2 / rated value":"20 kA","Product Feature / Touch Protection":"Yes","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","Type Of Voltage / Of The Operating Voltage":"AC","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 Component / Neutral Conductor Switching":"Yes","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/76116e880c317b2e521f8e0b59981442.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=211944&mlfb=5SY7663-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY7663-7/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SY7663-7 and what is the price?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Current pricing and availability are confirmed at quote time — submit an RFQ for a firm number."},{"question":"Will 5SY7663-7 drop into a panel designed for 5SY4140-7 without rewiring?","answer":"Both are 4-pole SENTRON MCBs with the same DIN-rail footprint and terminal layout, so mechanical fit is identical. The deciding difference is rating: 5SY4140-7 is a 40 A C-curve; 5SY7663-7 is 63 A C-curve. If the panel was wired for 40 A, the 63 A breaker fits the rail but the circuit protection rating changes — verify the downstream conductor sizing and load before swapping."},{"question":"What compliance documentation does Siemens provide for 5SY7663-7?","answer":"The part carries CE marking per the Low Voltage Directive and is designed to EN 60898 and IEC 60947-2. Halogen-free and silicon-free construction is declared. Specific RoHS/REACH declarations are available from Siemens documentation — request them with your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7663-7","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/5SY7663-7 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}}