{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY5263-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY5263-7","canonicalUrl":"https://aoctrl.com/siemens/5SY5263-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY5263-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY5263-7, 2-pole miniature circuit breaker, C-curve, 10 kA (IEC/EN 60898-2), 15 kA (IEC 60947-2), AC/DC 400/440 V, 2 MW, IP20.","salesMarkdown":"The Siemens 5SY5263-7 is a 2-pole SENTRON miniature circuit breaker with a C-curve trip characteristic, rated 10 kA breaking capacity per IEC/EN 60898-2 and 15 kA per IEC 60947-2. The 5SY5263-7 snaps onto a DIN rail (quick assembly system) and occupies 2 modular width units (36 mm wide, 90 mm tall, 76 mm deep, 70 mm installation depth). It mounts in any position, which helps when panel space is tight or the rail runs vertical. The IP20 rating means finger-safe terminals once wired — standard for enclosed panel gear, not for wet environments. Combined terminals top and bottom simplify daisy-chaining or looping power through the breaker without extra link bars. Sealable, halogen-free, silicon-free construction suits food, pharma, or other sensitive environments where outgassing matters. Dual-rated: 10 kA under IEC/EN 60898-2 (the standard for domestic and similar installations) and 15 kA under IEC 60947-2 (industrial switchgear). The higher 15 kA rating gives headroom for industrial panels with higher prospective fault currents — useful when the breaker sits downstream of a larger transformer or in a high-capacity distribution board. Vibration resistance per IEC 60068-2-6 (±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz) covers the shake you get near motors or conveyors. ## Sourcing reality Active and in production — no last-time-buy or EOL notice on this code.","metaTitle":"Siemens 5SY5263-7 SENTRON MCB, 2-Pole C-Curve, 10 kA","metaDescription":"Siemens 5SY5263-7 SENTRON miniature circuit breaker, 2-pole, C-curve, 10 kA per IEC/EN 60898-2. Active production. Sourced to order against RFQ.","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","Standard":"IEC / EN 60898-2, UL1077","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"2P","Number Of Poles":"2","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"400 V","at DC rated value":"440 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Energy Limitation Class":"3","Combined Terminal Bottom":"Yes","Suitability For Operation":"universal current","Neutral Conductor Switching":"No","Number Of Modular Width Units":"2","Position Of Power Supply Cord":"AC as required, observe DC polarity","Tripping Characteristic Class":"C","at DC according to EN 60898-2":"10 kA","according to EN 60898 rated value":"10 kA","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","Type Of Voltage Of The Operating Voltage":"AC/DC","at DC according to IEC 60947-2 rated value":"15 kA","Value Range Of The Supply Voltage Frequency":"50/60 Hz","operating voltage at DC rated value maximum":"500 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","vibration resistance according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Mechanical Service Life (Operating Cycles) Typical":"5 000","Product Extension Installable Supplementary Devices":"Yes","power loss [W] for rated value of the current at AC in hot operating state per pole":"6 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1718acf361e4fbde926f29db5c825076.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=143429&mlfb=5SY5263-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY5263-7/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY5263-7?","answer":"10 kA per IEC/EN 60898-2 and 15 kA per IEC 60947-2, with UL1077 supplementary protector recognition."},{"question":"Where can I buy the 5SY5263-7?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time."},{"question":"Will 5SY5263-7 drop into a panel specified around 5SY5250-7?","answer":"Yes — both are 2-pole SENTRON MCBs in the 5SY6 family with identical 36 mm width and DIN-rail mounting. The difference is the current rating (63 A vs 50 A), so as long as the panel's bus bar and wire sizing support 63 A, it's a direct swap."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY5263-7","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/5SY5263-7 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}}