{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY5263-6CC12","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY5263-6CC12","canonicalUrl":"https://aoctrl.com/siemens/5SY5263-6CC12","factsUrl":"https://aoctrl.com/api/mcp/products/5SY5263-6CC12","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SY5 series MCB, 440V DC 10kA 2-pole B63, order code 5SY5263-6CC12.","salesMarkdown":"The Siemens 5SY5263-6CC12 is a 2-pole miniature circuit breaker from the 5SY5 series, rated 63 A B-curve with a 10 kA breaking capacity at 440 V DC. The 440 V DC rating means it handles DC rail voltages common in industrial control panels and battery-backed bus systems without derating concerns. ## DC rail fit and panel integration Snap-on DIN rail mounting keeps panel integration straightforward — clips onto standard 35 mm rail, occupies two module widths. The 10 kA interrupting rating at 440 V DC covers most industrial DC distribution faults; no upstream current-limiting fuse required for typical 10 kA SCCR panels.","metaTitle":"Siemens 5SY5263-6CC12 MCB, 440V DC 10kA 2P B63","metaDescription":"Siemens 5SY5263-6CC12 MCB, 440V DC 10kA 2-pole B63 curve. Active production lifecycle. Quoted to order against 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/46a35613d6a80c70d242631078044856.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1265787&mlfb=5SY5263-6CC12","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY5263-6CC12/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SY5263-6CC12?","answer":"The 5SY5263-6CC12 has a 10 kA breaking capacity at 440 V DC, 2-pole configuration."},{"question":"Where can I buy the 5SY5263-6CC12?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY5263-6CC12","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/5SY5263-6CC12 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}}