{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL3263-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL3263-6","canonicalUrl":"https://aoctrl.com/siemens/5SL3263-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SL3263-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL3 series, 5SL3263-6, miniature circuit breaker, 2-pole, B characteristic, 63 A rated current, 4.5 kA breaking capacity, 400 V AC.","salesMarkdown":"It breaks fault currents up to 4.5 kA per EN 60898 and IEC 60947-2 at 400 V AC. The 70 mm installation depth plus 76 mm overall depth leaves clearance behind a standard 80 mm deep enclosure. Accepts solid or stranded copper from 0.75 mm² up to 25 mm²; tighten screw terminals to 2.5–3 N·m. Sealable — useful for revenue-metering or tamper-evident installations. Halogen-free and silicon-free construction suits environments sensitive to outgassing, such as clean rooms or certain medical facilities. Rated for 400 V AC between phases, with a maximum of 440 V AC in multi-phase operation. DC rating is 60 V maximum, so it is not a primary choice for DC circuits above that voltage. Overvoltage category III and energy limiting class 3. Does not switch the neutral conductor (2-pole, both poles are protected).","metaTitle":"Siemens 5SL3263-6 SENTRON MCB, 63A 2P B-Curve, 4.5kA","metaDescription":"Siemens 5SL3263-6 SENTRON miniature circuit breaker, 63 A, 2-pole, B characteristic, 4.5 kA breaking capacity per EN 60898. Current production, available to order. Quoted on reques","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 25 mm²","Width":"36 mm","title":"5SL3263-6","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 25 mm²","Rated Value":"50 Hz","description":"Miniature circuit breaker 400 V 4.5 kA, 2-pole, B, 63 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Wertebereich":"-25 ... +45 °C","Number of poles":"2","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-40 ... +75 °C","Product designation":"Miniature circuit breaker","Protection class IP":"IP20, with connected conductors","Overvoltage category":"3","Design of the product":"5SL miniature circuit breakers","Energy limiting class":"3","Number of width units":"2","Number of poles / Note":"2P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","circuit-breaker / Design":"5SL3","Suitability for operation":"Residential buildings/infrastructure","Current / at AC / rated value":"63 A","Tripping characteristic class":"B","at DC / rated value / maximum":"60 V","acc. to EN 60898 / rated value":"4.5 kA","acc. to IEC 60947-2 / rated value":"4.5 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","with multi-phase operation / at AC / maximum":"440 V","Tightening torque / with screw-type terminals":"2.5 ... 3 N·m","Product function / neutral conductor switching":"No","with multi-phase operation / at AC / rated value":"440 V","Mechanical service life (switching cycles) / typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/763f99701e3e547a6f7e3223077abfc0.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=321911&mlfb=5SL3263-6"},"ai":{"faq":[{"question":"Where can I buy 5SL3263-6?","answer":"This part is sourced to order through independent distribution. Submit an RFQ for current availability and pricing."},{"question":"What is the breaking capacity of 5SL3263-6?","answer":"It is rated 4.5 kA per both EN 60898 and IEC 60947-2 at 400 V AC."},{"question":"Will 5SL3263-6 drop into a panel specified for 5SL3120-6MB?","answer":"Both are 2-pole 5SL3 series breakers with the same 36 mm width (2 MW) and identical DIN-rail footprint. The 5SL3263-6 is a 63 A B-curve; the 5SL3120-6MB is a 20 A B-curve. No rewiring needed if the panel bus and load conductors are sized for 63 A."},{"question":"What is the depth of 5SL3263-6?","answer":"Overall depth is 76 mm; installation depth is 70 mm."},{"question":"What wire sizes does 5SL3263-6 accept?","answer":"Solid and stranded conductors from 0.75 mm² to 25 mm²."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL3263-6","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/5SL3263-6 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}}