{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY6208-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY6208-8","canonicalUrl":"https://aoctrl.com/siemens/5SY6208-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY6208-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY6 series, miniature circuit breaker, 2-pole, D tripping characteristic, 8 A rated current, 400 V AC, breaking capacity 6 kA per EN 60898 / 15 kA per IEC 60947-2.","salesMarkdown":"## What the ratings mean for your panel The Siemens 5SY6208-8 is a 2-pole miniature circuit breaker from the SENTRON 5SY6 family, rated 8 A at 400 V AC. The D tripping characteristic means it tolerates high inrush currents — typically 10–20× rated current — making it the right choice for motor, transformer, or welding-equipment branch circuits where a B- or C-curve would nuisance-trip on startup. Breaking capacity is 6 kA per EN 60898 for general distribution and 15 kA per IEC 60947-2 for industrial panel applications, so it handles fault currents up to that level without upstream coordination issues in most standard MCCs. At 2 modules wide (36 mm), it snaps onto DIN rail via the quick-assembly system and accepts top/bottom comb busbars — the combined terminal feature means you can feed a busbar through either end without extra adapters. Mounting position is any, and the IP20 rating (with conductors connected) is standard for enclosed panel gear. ## Lifecycle and sourcing reality Approvals include EN 60898, IEC 60947-2, UL 1077 and CSA C22.2 No. 235 — the UL/CSA supplementary-protector rating at 5 kA (480Y/277 V) covers North American panel builds. Halogen-free and silicon-free construction matters for high-reliability or clean-room environments where outgassing can contaminate contacts or optics. ## Integration notes Depth is 76 mm, installation depth 70 mm — check gland-plate clearance if back-panel wiring is tight. The 90 mm height and 36 mm width (2 width units) fit standard Siemens distribution boards and most third-party enclosures. Sealable cover option (yes) allows lockout/tagout compliance without an external hasp. Rated for ambient temperature from -40 °C to 75 °C, with humidity derating above 55 °C — suitable for unheated enclosures or outdoor cabinets in temperate climates. Pollution degree 3 and overvoltage category III are typical for fixed-installation industrial panels.","metaTitle":"Siemens 5SY6208-8 SENTRON MCB, 2-Pole D-Curve 8A, 6/15 kA","metaDescription":"Siemens 5SY6208-8 SENTRON miniature circuit breaker, 2-pole, D-curve, 8 A, 400 V AC. Breaking capacity 6 kA (EN 60898) / 15 kA (IEC 60947-2). Current lifecycle. Sourced to order —","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","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Degree of pollution":"3","Product designation":"Miniature circuit breaker","Protection class IP":"IP20, with connected conductors","at AC / rated value":"400 V","Overvoltage category":"III","Combined Terminal Top":"Yes","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","circuit-breaker / Design":"5SY6","Suitability for operation":"Mechanical engineering / industry","Current / at AC / rated value":"8 A","Tripping characteristic class":"D","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"6 kA","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"15 kA","Product feature / Touch protection":"Yes","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","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":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$55.68","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=333115&mlfb=5SY6208-8","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY6208-8/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY6208-8?","answer":"6 kA per EN 60898 for general distribution, 15 kA per IEC 60947-2 for industrial panels, and 5 kA per UL 1077 / CSA C22.2 No. 235 for North American supplementary protection."},{"question":"Where can I buy 5SY6208-8 and how is it quoted?","answer":"We source it through independent distribution channels and quote it to order against an RFQ. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"Will 5SY6208-8 drop into a panel specified for 5SY6613-8?","answer":"Both are 2-pole SENTRON 5SY6 breakers with the same 36 mm width and DIN-rail mounting, so mechanical fit is identical. The difference is the tripping curve — 5SY6208-8 is D-curve (high inrush), while 5SY6613-8 is a different characteristic. Verify the branch-circuit inrush requirements before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY6208-8","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/5SY6208-8 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}}