{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7208-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7208-8","canonicalUrl":"https://aoctrl.com/siemens/5SY7208-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7208-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7208-8 miniature circuit breaker, 2-pole, D tripping characteristic, 8 A rated current, 15 kA breaking capacity per EN 60898, 30 kA per IEC 60947-2.","salesMarkdown":"At 35 °C ambient the full 8 A is available; at 60 °C it derates to 6.43 A, so panel builders need to account for internal enclosure heat rise when loading adjacent breakers. Breaking capacity is 15 kA per EN 60898 and 30 kA per IEC 60947-2, with a DC rating of 15 kA per IEC 60947-2. Under UL 1077 / CSA C22.2 No. 235 it carries 5 kA. For a European panel specified to IEC 60947-2, the 30 kA figure gives headroom for high-fault installations without cascading upstream. The 5 kA UL/CSA number means this is a supplementary protector in North American practice — not a branch-circuit rated device per UL 489. The breaker is sealable, halogen-free, and silicon-free — relevant for clean-room or food-processing panels where outgassing must be controlled.","metaTitle":"Siemens 5SY7208-8 SENTRON MCB, 2-Pole D-Curve 8A, 15kA","metaDescription":"Siemens 5SY7208-8 SENTRON miniature circuit breaker, 2-pole, D characteristic, 8 A rated, 15 kA (EN 60898) / 30 kA (IEC 60947-2). Current production, sourced to order. Request quot","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":"5SY7208-8","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 15kA, 2-pole, D, 8A, D=70 mm","Halogen-Free":"Yes","Silicon-Free":"Yes","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","acc. to IEC 81346-2":"F","at AC / rated value":"8 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","acc. to DIN EN 61346-2":"F","at 35 °C / rated value":"8 A","at 45 °C / rated value":"7.26 A","at 50 °C / rated value":"6.99 A","at 55 °C / rated value":"6.72 A","at 60 °C / rated value":"6.43 A","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":"30 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","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 Component / 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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3ec3fe78af4abb5636b5a36815d323cd.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=108429&mlfb=5SY7208-8"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SY7208-8?","answer":"The part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for quote to confirm current pricing and availability at the time of ordering."},{"question":"What is 5SY7208-8's listed depth and width?","answer":"Depth is 76 mm overall (70 mm installation depth), width is 36 mm (2 modular units). These dimensions match the standard SENTRON 5SY series footprint."},{"question":"Will 5SY7208-8 drop into a panel specified around 5SY7210-7CC without rewiring?","answer":"Both are 2-pole SENTRON MCBs with the same 36 mm width and DIN-rail mounting, so the mechanical fit is identical. The difference is rating: 5SY7208-8 is 8 A D-curve, while 5SY7210-7CC is a different rating/curve. If the circuit load matches 8 A D-curve, no rewiring is needed; if the original design called for a higher current or different curve, the breaker must be reselected."},{"question":"What compliance documentation does Siemens provide for 5SY7208-8?","answer":"The breaker carries ratings per EN 60898 (15 kA), IEC 60947-2 (30 kA AC, 15 kA DC), and UL 1077 / CSA C22.2 No. 235 (5 kA). It is halogen-free and silicon-free. Standard Siemens declarations of conformity and material compliance (RoHS, REACH) are available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7208-8","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/5SY7208-8 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}}