{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ6463-6RC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ6463-6RC","canonicalUrl":"https://aoctrl.com/siemens/5SJ6463-6RC","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ6463-6RC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SJ6463-6RC, MCB Retail line, 4-pole, 6kA, 63A, B characteristic.","salesMarkdown":"The Siemens 5SJ6463-6RC is a 4-pole miniature circuit breaker (MCB) from the Retail line, rated at 63 A with a B tripping characteristic and a 6 kA breaking capacity. It is designed for overcurrent and short-circuit protection in final distribution circuits, typically snapped onto a DIN rail inside a consumer unit or panelboard. The 63 A rating at 6 kA breaking capacity means this MCB can safely interrupt a fault current up to 6,000 A without welding its contacts or failing catastrophically — sufficient for most residential and light commercial panelboards where the prospective short-circuit current stays under that threshold. The B characteristic (instantaneous trip at 3–5× In, i.e., 189–315 A) is the standard choice for resistive loads like heaters, lighting, and general socket outlets; it avoids nuisance tripping on small motor or transformer inrush that a C-curve would handle better. Four poles let it switch all three phases plus neutral in a three-phase distribution board, or serve as a double-pole + double-pole in a split-phase configuration.","metaTitle":"Siemens 5SJ6463-6RC MCB 4p 6kA 63A B Characteristic","metaDescription":"Siemens 5SJ6463-6RC MCB, 4-pole, 6kA breaking capacity, 63A, B-curve. Current-production lifecycle stage. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"title":"5SJ6463-6RC","description":"MCB Retail line 4p 6kA 63A B Characteristic","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/cf109e21afcee1212118f4f64b68ec5d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1423802&mlfb=5SJ6463-6RC"},"ai":{"faq":[{"question":"What is the breaking capacity and tripping curve of the 5SJ6463-6RC?","answer":"It has a 6 kA breaking capacity and a B characteristic, tripping between 3 and 5 times the 63 A rated current."},{"question":"Where can I buy the 5SJ6463-6RC?","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 the quote."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ6463-6RC","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/5SJ6463-6RC 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}}