{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4463-7CV","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4463-7CV","canonicalUrl":"https://aoctrl.com/siemens/5SY4463-7CV","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4463-7CV","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SY4463-7CV, miniature circuit breaker MCB, Icu=15kA at 400V, 4-pole, C63 characteristic.","salesMarkdown":"The Siemens 5SY4463-7CV is a 4-pole miniature circuit breaker (MCB) with a C63 trip characteristic and a rated ultimate short-circuit breaking capacity (Icu) of 15 kA at 400 V AC. The C-curve means it trips between 5 and 10 times rated current — standard for motor and general distribution loads where moderate inrush is expected. The 63 A per-pole rating covers branch circuits feeding sub-distribution boards, large contactor coils, or groups of smaller loads. ## What the rating means for fit The 15 kA Icu at 400 V is the maximum fault current the breaker can safely interrupt without welding contacts or causing arc flash-through. In a panel with an upstream transformer or bus rated above 15 kA SCCR, this breaker needs a current-limiting upstream device or a higher-rated frame. The 4-pole configuration (all poles switched, neutral not solid) suits TN-S or TT systems where the neutral must be disconnected for isolation.","metaTitle":"Siemens 5SY4463-7CV MCB, 63A 4P C-curve, 15kA Icu at 400V","metaDescription":"Siemens 5SY4463-7CV miniature circuit breaker, 63A 4-pole C-curve, 15kA breaking capacity at 400V AC. Lifecycle stage: current. Sourced 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/486787c52ef151753e3a94cee79ab437.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1531640&mlfb=5SY4463-7CV","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY4463-7CV/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY4463-7CV?","answer":"The rated ultimate short-circuit breaking capacity (Icu) is 15 kA at 400 V AC. This is the maximum fault current the breaker can safely interrupt."},{"question":"Where can I buy 5SY4463-7CV and get current pricing?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. 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/5SY4463-7CV","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/5SY4463-7CV 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}}