{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6263-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6263-7","canonicalUrl":"https://aoctrl.com/siemens/5SL6263-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6263-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON miniature circuit breaker, 5SL6263-7, 2-pole, C-curve, 63 A, 6 kA, 400 V AC, IP20.","salesMarkdown":"The Siemens SENTRON 5SL6263-7 is a 2-pole miniature circuit breaker rated 63 A with C-curve trip characteristic, breaking 6 kA per both EN 60898 and IEC 60947-2 at 400 V AC. That 6 kA rating is the same under both standards — no split rating to track — and the C-curve means it handles moderate inrush from motor starters or lighting banks without nuisance tripping, while still clearing a hard short inside its 6 kA ceiling. At 36 mm wide (2 modular units), it snaps onto a standard DIN rail and occupies two slots in a residential or infrastructure panel. The 76 mm depth leaves room for wiring behind the busbar, and the 70 mm installation depth matches typical distribution board cutouts. ## What the ratings mean for fit The 63 A rating on a 2-pole breaker suits subfeed or branch circuits pulling up to that load — think a small distribution board feeding lighting, socket outlets, or HVAC loads in a residential block or light-commercial infrastructure. The 6 kA breaking capacity is adequate for most domestic and light-commercial service entrances where the prospective short-circuit current stays under that threshold; if your panel has a higher fault level upstream, you'd need a higher-rated breaker or a current-limiting upstream device. Operating temperature range from -40 °C to 75 °C covers unheated utility rooms and outdoor enclosures alike. The IP20 rating (with connected conductors) means it's protected against finger contact but not against dripping water — standard for enclosed distribution boards; no washdown or outdoor exposure without a weatherproof enclosure. Power loss of 5.2 W per pole at rated current in hot operating state matters for thermal management inside a crowded enclosure — two poles dissipate about 10.4 W total, which is modest but worth accounting for if the panel is tightly packed or poorly ventilated. ## Integration notes Mounts in any position on the DIN rail — no orientation restriction. Sealable (tamper-evident seal available) for installations that need meter-seal or lockout compliance. Supplementary devices (auxiliary contacts, shunt trips, alarm switches) can be snapped on the right side without removing the breaker — useful for remote tripping or status feedback in a BMS. Halogen-free and silicon-free construction meets material restrictions for clean-room or high-reliability environments where off-gassing from a fault could damage nearby electronics.","metaTitle":"Siemens 5SL6263-7 SENTRON MCB, 2-pole C 63A 6kA","metaDescription":"Siemens SENTRON 5SL6263-7 miniature circuit breaker, 2-pole, C-curve, 63 A, 6 kA breaking capacity per EN 60898/IEC 60947-2. Active production. Sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"2P","Number Of Poles":"2","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Energy Limitation Class":"3","Suitability For Operation":"Residential buildings/infrastructure","at DC rated value maximum":"72 V","Number Of Modular Width Units":"2","Tripping Characteristic Class":"C","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"6 kA","according to IEC 60947-2 rated value":"6 kA","Type Of Voltage Of The Operating Voltage":"AC","with multi-phase operation at AC maximum":"440 V","Value Range Of The Supply Voltage Frequency":"50/60 Hz","with multi-phase operation at AC rated value":"440 V","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","power loss [W] for rated value of the current at AC in hot operating state per pole":"5.2 W"}},"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=185232&mlfb=5SL6263-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL6263-7/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 5SL6263-7?","answer":"Sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment."},{"question":"What is the difference between the 5SL6263-7 and the 5SL4363-7?","answer":"The 5SL4363-7 is the 3-pole sibling (54 mm wide, 3 modular units) with a 10 kA breaking capacity instead of 6 kA. The 5SL6263-7 is 2-pole, 36 mm wide, 6 kA. They share the same C-curve, 63 A rating, 400 V AC, and SENTRON family — but the extra pole and higher breaking capacity on the 3-pole version mean it won't drop into a panel wired for 2-pole without a busbar and enclosure change."},{"question":"What is the width of the 5SL6263-7?","answer":"36 mm, which is 2 modular width units on a standard DIN rail."},{"question":"What compliance documentation does Siemens provide for the 5SL6263-7?","answer":"The breaker carries approvals per IEC/EN 60898-1 and IEC 60947-2. It is halogen-free and silicon-free. Standard Siemens documentation includes a CE declaration, RoHS/REACH compliance data, and a datasheet with the 6 kA breaking capacity curves."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6263-7","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/5SL6263-7 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}}