{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4263-0RC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4263-0RC","canonicalUrl":"https://aoctrl.com/siemens/5SL4263-0RC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4263-0RC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SL4263-0RC, 5SL4 series, miniature circuit breaker, 63 A, 2-pole, Z characteristic, 10 kA breaking capacity.","salesMarkdown":"The Z characteristic means it trips between 2.5 and 4 times the rated current — designed to protect semiconductor loads and sensitive electronic circuits that cannot tolerate the higher inrush tolerance of a B or C curve. At 63 A, this breaker covers high-current single-phase branches such as large air-conditioning units, commercial kitchen equipment, or sub-distribution boards. Because it is a current-production Siemens MCB, lead times typically align with standard factory cycles — no premium for a last-time-buy. Its 2-pole width occupies two modular units (36 mm) on the rail. The tunnel terminals accept conductors up to 25 mm², which is adequate for the 63 A rating. When populating a distribution board, account for the heat dissipation of a 63 A breaker — maintain the manufacturer's recommended spacing or derating factors if the enclosure is densely packed.","metaTitle":"Siemens 5SL4263-0RC Miniature Circuit Breaker 63A 2-pole Z,","metaDescription":"Siemens 5SL4263-0RC miniature circuit breaker, 63A 2-pole Z characteristic, 10kA breaking capacity. Current production. Sourced to order against an RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/69e2b11521f3800911eef4d09f2a0d3b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1502376&mlfb=5SL4263-0RC","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL4263-0RC/alternatives.json"},"ai":{"faq":[{"question":"What is 5SL4263-0RC's breaking capacity and tripping characteristic?","answer":"It has a 10 kA breaking capacity and a Z tripping characteristic (2.5–4× In), making it suitable for protecting semiconductor and sensitive electronic loads."},{"question":"Where can I buy the Siemens 5SL4263-0RC?","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 commitment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4263-0RC","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/5SL4263-0RC 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}}