{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4663-8CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4663-8CC","canonicalUrl":"https://aoctrl.com/siemens/5SY4663-8CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4663-8CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4663-8CC, miniature circuit breaker, 3P+N, D characteristic, 63 A, 400 V AC, 10 kA per EN 60898, 4 MW units.","salesMarkdown":"The Siemens 5SY4663-8CC is a SENTRON miniature circuit breaker (MCB) rated 63 A with a D tripping characteristic, 4-pole configuration (3P+N), and a 10 kA breaking capacity per EN 60898 at 400 V AC. ## Mounting, environment, and panel integration Ambient operating range is -40 °C to 75 °C, but the thermal trip derates above 55 °C per the humidity/temperature influence table: max 95% RH at 55 °C, dropping to 35% RH at 75 °C. If the panel runs hot, factor that into the effective current rating. ## Key electrical and mechanical parameters Rated operational voltage is 400 V AC (440 V max for both single-phase and multi-phase operation). Frequency range is 50/60 Hz. Power loss per pole at rated current in hot state is 4.9 W — for a 4-pole breaker that's 19.6 W total heat to dissipate inside the enclosure; factor that into your thermal budget. Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz.","metaTitle":"Siemens 5SY4663-8CC SENTRON MCB, 63A D-curve, 4-pole, 10kA","metaDescription":"Siemens 5SY4663-8CC SENTRON miniature circuit breaker, 63A, D characteristic, 4-pole (3P+N), 400V AC, 10kA breaking capacity per EN 60898. Active production. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"72 mm","title":"5SY4663-8CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 10kA, 3+N-pole, D, 63A","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","at AC rated value":"400 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"Yes","Number Of Modular Width Units":"4","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"D","according to EN 60898 rated value":"10 kA","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","Type Of Voltage Of The Operating Voltage":"AC","Value Range Of The Supply Voltage Frequency":"50/60 Hz","operating voltage at DC rated value maximum":"72 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","vibration resistance according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","power loss [W] for rated value of the current at AC in hot operating state per pole":"4.9 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/bc69d172f7ff2423930013dcd96952c2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=390447&mlfb=5SY4663-8CC"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SY4663-8CC?","answer":"Submit an RFQ through this listing. The part is sourced to order through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of the 5SY4663-8CC?","answer":"10 kA per EN 60898 at 400 V AC. That is the rated short-circuit capacity for this MCB under the standard's test conditions."},{"question":"What compliance documentation does Siemens provide for the 5SY4663-8CC?","answer":"The breaker is halogen-free and silicon-free. Standard Siemens MCB documentation includes CE declaration of conformity and material declarations; specific RoHS/REACH certificates are available from Siemens Industry Support upon request."},{"question":"Will the 5SY4663-8CC drop into a panel specified around a 5SY4304-7CV?","answer":"Both are 4-pole SENTRON MCBs on the same DIN-rail footprint with the same modular width per pole. The 5SY4663-8CC is a 63 A D-curve; the 5SY4304-7CV is a different rating and characteristic. Physical fit is the same, but verify the electrical ratings match your circuit requirements before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4663-8CC","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/5SY4663-8CC when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}