{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4604-8CV","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4604-8CV","canonicalUrl":"https://aoctrl.com/siemens/5SY4604-8CV","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4604-8CV","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SY4604-8CV, MCB, Icu=15kA 400V 3P+N D4.","salesMarkdown":"## What this MCB is and what the ratings mean for your panel The Siemens 5SY4604-8CV is a 3-pole-plus-neutral miniature circuit breaker with a D tripping curve, rated for 4 A and a short-circuit breaking capacity (Icu) of 15 kA at 400 V AC. The D curve means it's designed for loads with high inrush currents — think motor starters, transformers, or discharge lighting — where the magnetic trip won't nuisance-trip on startup but still clears a hard fault fast. The 15 kA Icu tells you this breaker can safely interrupt a fault current up to that level without welding its contacts or rupturing the case, which is critical for coordination downstream of a transformer or a high-capacity bus.","metaTitle":"Siemens 5SY4604-8CV MCB, Icu=15kA 400V 3P+N D4","metaDescription":"Siemens 5SY4604-8CV miniature circuit breaker, 3P+N, D4 curve, 15kA breaking capacity at 400V. Current lifecycle stage. Available to order against RFQ.","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/01a86c589101c2301fad479a6bb046a2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1531685&mlfb=5SY4604-8CV","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY4604-8CV/alternatives.json"},"ai":{"faq":[{"question":"What is 5SY4604-8CV used for?","answer":"It's a 3P+N miniature circuit breaker with a D4 curve and 15 kA breaking capacity at 400 V, suited for protecting circuits with high inrush current — motor feeders, small transformers, or lighting banks — where a standard B or C curve would trip on startup."},{"question":"Where can I buy the 5SY4604-8CV?","answer":"This part is sourced and quoted to order against an RFQ through our independent distribution channels. Availability and current pricing are confirmed at the time of quote."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4604-8CV","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/5SY4604-8CV 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}}