{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4463-0RC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4463-0RC","canonicalUrl":"https://aoctrl.com/siemens/5SL4463-0RC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4463-0RC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SL4463-0RC, Miniature Circuit Breaker, 63A, 4-pole, Z characteristic, 10kA.","salesMarkdown":"The Z trip curve is designed for semiconductor protection and sensitive electronic loads where the inrush is minimal but short-circuit protection must be fast. ## What the Z Characteristic Means for Fit The Z characteristic (per IEC 60898) defines a narrow magnetic trip band — typically 2.5 to 4 times In. For a 63 A breaker, that means instantaneous tripping between roughly 158 A and 252 A. This is faster than a B curve (3–5× In) and much faster than a C curve (5–10× In), making it the right choice for protecting power supplies, drives, and rectifier inputs where the load draws near-sinusoidal current but a short-circuit must be cleared in under half a cycle. The trade-off is that Z-curve breakers are more sensitive to transformer inrush; verify the upstream transformer's magnetizing current won't nuisance-trip the 63 A rating. ## Panel Integration Four-pole width at 63 A means it occupies four modular units (each 18 mm) — 72 mm total on the rail. For a panel builder, this breaker fits alongside other 5SL series devices in a common distribution board without requiring a separate mounting plate.","metaTitle":"Siemens 5SL4463-0RC MCB, 63A 4P Z-Char 10kA","metaDescription":"Siemens 5SL4463-0RC miniature circuit breaker, 63A 4-pole Z characteristic, 10kA breaking capacity. Current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"title":"5SL4463-0RC","description":"Miniature Circuit Breaker 63A 4-pole Z characteristic 10kA","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ce64f1d4326837315a4c1ad6bff0003a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1502396&mlfb=5SL4463-0RC"},"ai":{"faq":[{"question":"What is the 5SL4463-0RC used for?","answer":"It is a 63 A, 4-pole miniature circuit breaker with a Z characteristic and 10 kA breaking capacity, designed for protecting semiconductor circuits and sensitive electronic loads against short circuits and overloads."},{"question":"Where can I buy the 5SL4463-0RC?","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 offer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4463-0RC","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/5SL4463-0RC 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}}