{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6263-6BB","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6263-6BB","canonicalUrl":"https://aoctrl.com/siemens/5SL6263-6BB","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6263-6BB","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6 series, 5SL6263-6BB miniature circuit breaker, 2-pole, 63 A, B characteristic, 6 kA, 400 V AC.","salesMarkdown":"## What this MCB covers The Siemens 5SL6263-6BB is a 2-pole SENTRON miniature circuit breaker rated 63 A with a B tripping curve, designed for residential and light commercial distribution boards. It breaks fault currents up to 6 kA per EN 60898 and IEC 60947-2, which means it handles standard domestic and small-building fault levels without cascading upstream — the 6 kA rating is the interrupting capacity, not a continuous rating, so it's sized for the typical service-entrance short-circuit duty. The 5SL6263-6BB occupies 2 width units (36 mm) on a DIN rail, with a mounting depth of 70 mm and overall depth of 76 mm. Terminal capacity accepts solid or stranded copper from 0.75 to 25 mm², so it handles the full range of 63 A feeder conductors without needing a reducer. Tightening torque is 2.5 to 3 N·m, typical for a 63 A terminal block. Mounting position is any, which helps when you're cramming a board into a tight enclosure corner.","metaTitle":"Siemens 5SL6263-6BB SENTRON MCB, 63 A, B Curve, 2-Pole","metaDescription":"Siemens 5SL6263-6BB SENTRON miniature circuit breaker, 63 A, B characteristic, 2-pole, 6 kA per EN 60898. Current lifecycle stage, available to order against RFQ.","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","Height":"90 mm","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":"2","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-25 ... +45 °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":"5SL6","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":"6 kA","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","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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/98efd983b456e516b352285b8b77313d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=75309&mlfb=5SL6263-6BB","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL6263-6BB/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SL6263-6BB and how do I get a price?","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 the latest position."},{"question":"What is 5SL6263-6BB's listed depth?","answer":"Overall depth is 76 mm, with an installation depth of 70 mm on the DIN rail."},{"question":"Will 5SL6263-6BB drop into a panel specified around 5SL6563-7BB without rewiring?","answer":"Both are 2-pole SENTRON MCBs on the same 36 mm DIN-rail footprint, so mechanical fit is identical. Terminal capacity is the same (0.75–25 mm²). The deciding difference is the tripping curve: the 5SL6263-6BB is a B curve, while the 5SL6563-7BB is a C curve. If the original panel was coordinated for C-curve selectivity, dropping in a B curve may cause nuisance tripping on inrush — check the load type before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6263-6BB","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/5SL6263-6BB 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}}