{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4508-8CC11","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4508-8CC11","canonicalUrl":"https://aoctrl.com/siemens/5SY4508-8CC11","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4508-8CC11","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SY4508-8CC11, miniature circuit breaker, 230 V 10kA, 1+N-pole, D-curve, 8 A, for railway applications.","salesMarkdown":"## Railway-grade MCB with D-curve selectivity The Siemens 5SY4508-8CC11 is a 1+N-pole miniature circuit breaker rated at 230 V with a 10 kA breaking capacity, D-curve trip characteristic, and 8 A current rating, explicitly specified for railway applications. ## What the ratings mean for the panel The 10 kA breaking capacity at 230 V AC covers the prospective short-circuit current at the secondary side of a typical rail substation distribution panel; verify the upstream SCCR before coordinating with a larger main breaker. The 1+N-pole configuration switches both line and neutral, which is required for single-phase railway auxiliary circuits where the neutral is not bonded to the vehicle chassis.","metaTitle":"Siemens 5SY4508-8CC11 Miniature Circuit Breaker, D-Curve, 8 A, Railway","metaDescription":"Siemens 5SY4508-8CC11 miniature circuit breaker, 230 V 10kA, 1+N-pole, D-curve, 8 A, for railway applications. Current lifecycle. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/9c787b12bec373a2d489b2067dc75c21.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=128580&mlfb=5SY4508-8CC11","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY4508-8CC11/alternatives.json"},"ai":{"faq":[{"question":"What is the 5SY4508-8CC11 rated for?","answer":"It is a 1+N-pole miniature circuit breaker rated 230 V, 10 kA interrupting capacity, D-curve, 8 A, for railway applications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4508-8CC11","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/5SY4508-8CC11 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}}