{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ6463-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ6463-6","canonicalUrl":"https://aoctrl.com/siemens/5SJ6463-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ6463-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ6 series, miniature circuit breaker, 4-pole, B tripping characteristic, 63 A rated current, 6 kA breaking capacity, 400 V AC.","salesMarkdown":"## What this 4-pole B-curve 63 A MCB delivers The Siemens SENTRON 5SJ6463-6 is a 4-pole miniature circuit breaker rated 63 A at 400 V AC, with a B tripping characteristic and a 6 kA breaking capacity certified to both EN 60898 and IEC 60947-2. The 6 kA rated short-circuit capacity (Icn per EN 60898, Icu per IEC 60947-2) is the standard residential and light-commercial fault level across most of Europe and Asia. At 400 V three-phase, 6 kA prospective fault current covers the majority of distribution boards downstream of a larger upstream breaker or transformer. The energy limiting class of 3 means this MCB restricts let-through energy enough to protect downstream wiring and connected equipment under short-circuit conditions — a coordination detail worth verifying against the upstream protective device's let-through curve if the panel feeds sensitive electronics. ## Installation and wiring The terminal accepts solid or stranded conductors from 0.75 mm² up to 25 mm², which covers everything from 1.5 mm² lighting tails to 16 mm² subfeed cables. The IP20 rating (with conductors connected) is standard for enclosed distribution boards; no special sealing is required inside a panel. Touch protection is built into the terminals, so accidental contact during maintenance is prevented as long as conductors are properly terminated. For a BOM line that needs this exact 4-pole 63 A B-curve MCB, the 5SJ6463-6 is the correct order code — no parametric substitute is required.","metaTitle":"Siemens 5SJ6463-6 SENTRON MCB, 4-Pole B 63A 6kA","metaDescription":"Siemens SENTRON 5SJ6463-6 miniature circuit breaker, 4-pole, B-curve, 63 A, 6 kA breaking capacity per EN 60898/IEC 60947-2, 400 V AC. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Solid":"0.75 ... 25 mm²","Sealable":"Yes","Stranded":"0.75 ... 25 mm²","Rated Value":"50 Hz","Halogen-Free":"Yes","Silicon-Free":"Yes","During Storage":"-40 ... +75 °C","Number of poles":"4","Type of voltage":"AC/DC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-20 ... +45 °C","Product designation":"Miniature circuit breakers","Protection class IP":"IP20, with connected conductors","Overvoltage category":"3","Design of the product":"Miniature circuit breaker 5SJ6","Energy limiting class":"3","Number of width units":"4","Number of poles / Note":"4","circuit-breaker / Design":"5SJ6","Current / at AC / rated value":"63 A","Tripping characteristic class":"B","at DC / rated value / maximum":"60 V","acc. to EN 60898 / rated value":"6 kA","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"6 kA","Product feature / Touch protection":"Yes","Supply voltage / at AC / rated value":"400 V","Influence of the surrounding temperature":"Periodically +55°C, max. 95% humidity","Insulation voltage / at AC / rated value":"440 V","Vibration resistance / acc. to IEC 60068-2-6":"50m/s² at 25 to 150Hz and 60m/s² at 10 to 150 Hz","with multi-phase operation / at AC / maximum":"440 V","Mechanical service life (switching cycles) / typical":"20 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=324189&mlfb=5SJ6463-6","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SJ6463-6/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 5SJ6463-6 and get a price?","answer":"The 5SJ6463-6 is sourced to order against an RFQ through independent distribution. Submit a request for quote to confirm current availability and pricing."},{"question":"What is the difference between the 5SJ6463-6 and the 5SJ6463-7?","answer":"Both are 4-pole 63 A MCBs with identical 6 kA breaking capacity, 400 V rating, and 70 mm depth. The only difference is the tripping characteristic: the 5SJ6463-6 uses a B-curve (3–5× In), while the 5SJ6463-7 uses a C-curve (5–10× In). The B-curve is preferred for resistive loads and general distribution; the C-curve handles higher inrush from motor or transformer loads. They are mechanically interchangeable on the same DIN rail."},{"question":"What wire sizes does the 5SJ6463-6 accept?","answer":"The terminals accept solid or stranded conductors from 0.75 mm² up to 25 mm²."},{"question":"What compliance documentation is available for the 5SJ6463-6?","answer":"The MCB is certified to EN 60898 and IEC 60947-2 for breaking capacity, and carries an IP20 protection class. It is halogen-free and silicon-free. Standard Siemens SENTRON documentation includes CE declaration of conformity and RoHS compliance information."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ6463-6","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/5SJ6463-6 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}}