{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY8201-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY8201-8","canonicalUrl":"https://aoctrl.com/siemens/5SY8201-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY8201-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY8201-8 miniature circuit breaker, D characteristic, 1 A rated, 2-pole, 70 kA breaking capacity per IEC 60947-2.","salesMarkdown":"On DC circuits it's rated 15 kA up to 72 V, covering many control-voltage and battery-backed loads. ## D-curve and thermal derating Rated 1 A at 45 °C, it derates to 0.98 A at 50 °C and 0.95 A at 55 °C — a 5% drop from the 45 °C baseline, so panel ambient above 50 °C needs a one-step upsizing to the next rating. Surrounding temperature influence caps at 95% RH to 55 °C, 55% RH to 70 °C, and 35% RH to 75 °C — the breaker's maximum operating temperature is 75 °C, but humidity must drop as temperature rises to avoid internal condensation. Mounting position is any — vertical, horizontal, or inverted — so it fits tight gland-plate layouts without derating. Halogen-free and silicon-free construction, sealable for lockout/tagout, with touch protection per the product feature — meets the material and safety requirements for food-and-bev and semiconductor fab panels.","metaTitle":"Siemens 5SY8201-8 SENTRON MCB, 1A D-Curve, 2-Pole, 70kA","metaDescription":"Siemens 5SY8201-8 SENTRON miniature circuit breaker, 1A rated, D tripping characteristic, 2-pole, 70 kA breaking capacity at 440 V AC. Active production. Sourced to order.","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","title":"5SY8201-8","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V D=70 mm 25 kA according to EN 60947-2, 2P, D1","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","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","at AC / rated value":"1 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","according to EN 61346-2":"F","at 45 °C / rated value":"1 A","at 50 °C / rated value":"0.98 A","at 55 °C / rated value":"0.95 A","Combined Terminal Bottom":"Yes","according to IEC 81346-2":"F","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"2","Tripping Characteristic Class":"D","Position / Of Power Supply Cord":"Any","Product Feature / Touch Protection":"Yes","according to IEC 60947-2 / rated value":"70 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","Value Range / Of The Supply Voltage Frequency":"50/60 Hz","at DC / according to IEC 60947-2 / rated value":"15 kA","Product Component / Neutral Conductor Switching":"No","with multi-phase operation / at AC / rated value":"440 V","operating voltage / at DC / rated value / maximum":"72 V","vibration resistance / according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","with single-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/ab32a8af0f777ffe98de615961dd3e69.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=496586&mlfb=5SY8201-8"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY8201-8?","answer":"70 kA at 440 V AC per IEC 60947-2, and 15 kA at 72 V DC — sufficient for high-fault industrial panels."},{"question":"What is the difference between 5SY8201-8 and 5SY7210-7CC?","answer":"The 5SY7210-7CC is a different pole/current variant in the same SENTRON family; the 5SY8201-8 is a 2-pole 1 A D-curve breaker, while the 5SY7210-7CC is a 1-pole unit. They share the same DIN-rail footprint and terminal design, so a panel originally wired for the 5SY7210-7CC can accept the 5SY8201-8 if the circuit requires two poles and a higher breaking capacity."},{"question":"Where can I buy 5SY8201-8?","answer":"Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"What compliance documentation is available for 5SY8201-8?","answer":"The breaker carries IEC 60947-2 ratings, is halogen-free and silicon-free, and is designed for mechanical engineering/industry applications per the suitability listing. Specific RoHS/REACH/UL declarations should be requested at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY8201-8","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/5SY8201-8 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}}