{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4608-8CV","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4608-8CV","canonicalUrl":"https://aoctrl.com/siemens/5SY4608-8CV","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4608-8CV","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SY4608-8CV, MCB, Icu=15 kA at 400 V, 3-pole + N, D8 characteristic.","salesMarkdown":"## What this MCB does on the panel The Siemens 5SY4608-8CV is a 3-pole + N miniature circuit breaker with a D8 tripping curve, rated for a 15 kA breaking capacity at 400 V. The D-curve means it tolerates the high inrush current of motor and transformer loads without nuisance tripping — the magnetic trip threshold sits at 10 to 20 times rated current, so it's the right choice for a pump, compressor, or conveyor drive branch circuit, not for general lighting or resistive loads where a B or C curve would be a better fit. The 15 kA Icu at 400 V tells you it can safely interrupt a fault of that magnitude without welding contacts or cascading upstream — a spec to match against the prospective short-circuit current at the panel's distribution point. ## Deployment context Snap-on DIN rail mounting for standard 35 mm profile. The 3P+N configuration handles three-phase circuits with a switched neutral, typical in European-style distribution boards where the neutral is broken on fault. Wire termination is via screw-clamp terminals; torque to the manufacturer's spec on the nameplate.","metaTitle":"Siemens 5SY4608-8CV MCB, 15 kA 400V 3P+N D8","metaDescription":"Siemens 5SY4608-8CV miniature circuit breaker, 15 kA breaking capacity at 400 V, 3-pole + N, D8 curve. Current lifecycle stage. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"title":"5SY4608-8CV","description":"MCB Icu=15KA 400V 3P+N D8","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/762c3621b7606def4cf866aae4de2699.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1531691&mlfb=5SY4608-8CV"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY4608-8CV?","answer":"15 kA at 400 V, 3-pole + N, D8 curve."},{"question":"Where can I buy 5SY4608-8CV?","answer":"Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4608-8CV","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/5SY4608-8CV 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}}