{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY5263-7KK11","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY5263-7KK11","canonicalUrl":"https://aoctrl.com/siemens/5SY5263-7KK11","factsUrl":"https://aoctrl.com/api/mcp/products/5SY5263-7KK11","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY5263-7KK11 miniature circuit breaker, 2-pole, C-curve, 63 A rated current, 400 V AC / 440 V DC, 10 kA breaking capacity, IP20, railway design.","salesMarkdown":"## Integrator's field note The Siemens SENTRON 5SY5263-7KK11 is a 2-pole miniature circuit breaker rated 63 A at 400 V AC (C-curve, 10 kA per EN 60898) and 440 V DC (10 kA per EN 60898-2). Universal-current design means it handles both AC and DC circuits, but observe DC polarity at the terminals (AC as required, DC polarity must be followed). Halogen-free and silicon-free construction. Ambient operating range -40 °C to 75 °C, with derating per the influence curve (max 95% RH at 55 °C, 55% at 70 °C, 35% at 75 °C). Designed for railway applications (energy limiting class 3). Sealable for tamper-proof installations. Touch protection included.","metaTitle":"Siemens 5SY5263-7KK11 SENTRON MCB, 2-Pole C-Curve 63A 400V A","metaDescription":"Siemens SENTRON 5SY5263-7KK11 miniature circuit breaker, 2-pole C-curve, 63A AC, 400V AC / 440V DC, 10kA breaking capacity, IP20, railway design. Current production, sourced to ord","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"50/60 Hz","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting Type":"Quick assembly system","Number Of Poles":"2","Type Of Voltage":"AC/DC","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","at DC / rated value":"250 V","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Design Of The Product":"For railway applications","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","Combined Terminal Bottom":"Yes","Suitability For Operation":"universal current","at DC / acc. to EN 60898-2":"10 kA","Tripping Characteristic Class":"C","at DC / rated value / maximum":"500 V","acc. to EN 60898 / rated value":"10 kA","Position / Of Power Supply Cord":"AC as required, observe DC polarity","Product Feature / Touch Protection":"Yes","supply voltage / at AC / rated value":"400 V","supply voltage / at DC / rated value":"440 V","operating current / at AC / rated value":"63 A","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","at DC / acc. to IEC 60947-2 / rated value":"15 kA","Product Function / Neutral Conductor Switching":"No","with multi-phase operation / at AC / rated value":"440 V","with single-phase operation / at AC / rated value":"440 V","Mechanical Service Life (Switching Cycles) / Typical":"5 000"}},"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=295904&mlfb=5SY5263-7KK11","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY5263-7KK11/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY5263-7KK11?","answer":"10 kA at 400 V AC per EN 60898, and 10 kA at DC per EN 60898-2."},{"question":"What compliance documentation does Siemens provide for 5SY5263-7KK11?","answer":"The part is designed per EN 60898 (AC) and EN 60898-2 (DC), with functional classification per DIN EN 61346-2 and DIN EN 81346-2. Halogen-free and silicon-free construction supports environmental compliance requirements."},{"question":"Where can I buy 5SY5263-7KK11?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm offer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY5263-7KK11","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/5SY5263-7KK11 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}}