{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7205-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7205-8","canonicalUrl":"https://aoctrl.com/siemens/5SY7205-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7205-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7205-8, 2-pole miniature circuit breaker, D tripping characteristic, 0.5 A rated current, 15 kA (EN 60898) / 50 kA (IEC 60947-2) breaking capacity, 2 MW units.","salesMarkdown":"## Siemens 5SY7205-8 SENTRON MCB — 2-pole D-curve at 0.5 A It is designed for AC circuits at 400 V and 50/60 Hz, with a breaking capacity of 15 kA per EN 60898 and 50 kA per IEC 60947-2. The 5SY7205-8 carries a 50 kA rated short-circuit capacity under IEC 60947-2, which is the standard for industrial installations — not just the 15 kA under EN 60898 for household-type distribution. For DC circuits, it is rated 15 kA per IEC 60947-2, covering battery-backed control buses. The quick assembly system allows snap-on mounting in any position. IP20 protection with connected conductors — suitable for enclosed panel environments. The sealable design supports anti-tamper requirements in metering or safety-critical circuits. Vibration resistance tested to IEC 60068-2-6: ±1 mm at 5 to 25 Hz and 50 m/s² at 25 to 150 Hz. Suitable for mechanical engineering and general industry applications per the manufacturer's designation.","metaTitle":"Siemens 5SY7205-8 SENTRON MCB, 2P D 0.5A, 15/50 kA","metaDescription":"Siemens 5SY7205-8 SENTRON miniature circuit breaker, 2-pole, D-curve, 0.5 A rated current. Breaking capacity 15 kA (EN 60898) / 50 kA (IEC 60947-2). Active production, sourced to o","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","Number Of Poles":"2","Type Of Voltage":"AC","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","acc. to IEC 81346-2":"F","at AC / rated value":"400 V","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Number Of Poles / Note":"2P","acc. to DIN EN 61346-2":"F","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"2","Tripping Characteristic Class":"D","acc. to EN 60898 / rated value":"15 kA","Position / Of Power Supply Cord":"Any","acc. to IEC 60947-2 / rated value":"50 kA","Product Feature / Touch Protection":"Yes","Supply Voltage Frequency / Rated Value":"50/60 Hz","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","operational current / at AC / rated value":"0.5 A","at AC / acc. to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance / acc. to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Product Function / Neutral Conductor Switching":"No","with multi-phase operation / at AC / rated value":"440 V","operating voltage / at DC / rated value / maximum":"72 V","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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/655ee7fa4bcab45b08a7e26b912e172a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=125029&mlfb=5SY7205-8","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY7205-8/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SY7205-8 and how do I get a price?","answer":"The 5SY7205-8 is available to order against an RFQ through independent distribution. Submit a request for quote to confirm current availability and pricing."},{"question":"What is the breaking capacity of 5SY7205-8 under IEC 60947-2?","answer":"The 5SY7205-8 is rated at 50 kA breaking capacity per IEC 60947-2 at 400 V AC, and 15 kA per EN 60898. For DC circuits, it is rated 15 kA per IEC 60947-2."},{"question":"What does the D tripping characteristic mean for this breaker?","answer":"The D-curve allows higher inrush current before tripping — typically 10 to 20 times the rated current. This suits loads with high starting surges like motors, transformers, or discharge lighting, where a B or C curve would nuisance-trip."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7205-8","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/5SY7205-8 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}}