{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4608-8CC11","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4608-8CC11","canonicalUrl":"https://aoctrl.com/siemens/5SY4608-8CC11","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4608-8CC11","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SY4608-8CC11 miniature circuit breaker, 400 V 10 kA, 3+N-pole, D-curve, 8 A, for railway applications.","salesMarkdown":"## Lifecycle and sourcing For a BOM line or a critical-spare cabinet, the 5SY4608-8CC11 is quoted to order against an RFQ; availability and current pricing are confirmed at quote time. ## What the ratings mean for fit The 10 kA breaking capacity at 400 V means this MCB safely interrupts fault currents up to that level without upstream device cascade — sufficient for most secondary distribution panels in rail infrastructure where the prospective short-circuit current stays under that threshold. The 3+N-pole configuration (three protected phases plus switched neutral) matches 3-phase 4-wire systems typical in rail power supplies; the neutral pole is not internally protected but provides isolation. The 8 A D-curve rating is sized for smaller auxiliary loads — lighting circuits, control transformers, signalling power supplies — not for motor feeders or main incomers.","metaTitle":"5SY4608-8CC11 Siemens MCB 400V 10kA D 8A Railway","metaDescription":"Siemens 5SY4608-8CC11 miniature circuit breaker, 400 V 10 kA, 3+N-pole, D-curve, 8 A for railway applications. Current lifecycle stage. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"title":"5SY4608-8CC11","description":"Miniature circuit breaker 400 V 10kA, 3+N-pole, D, 8A for railway applications","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/bebe2668d73a7fc28c05a314960c06e1.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=267051&mlfb=5SY4608-8CC11"},"ai":{"faq":[{"question":"Where can I buy the 5SY4608-8CC11 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer."},{"question":"What does the D-curve and 8 A rating mean for my application?","answer":"The D-curve (10–20× In) tolerates high inrush currents from inductive loads such as relays and contactors, while the 8 A rating limits continuous load to about 1.8 kW per phase at 400 V — suitable for auxiliary and control circuits, not main power feeders."},{"question":"What compliance documentation is available for the 5SY4608-8CC11?","answer":"As a Siemens railway-series MCB, it carries the manufacturer's standard declarations (CE, UKCA) and is designed to meet railway rolling-stock standards such as EN 50155 and EN 61373 for vibration and shock. Specific RoHS/REACH declarations are available on request with the RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4608-8CC11","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/5SY4608-8CC11 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}}