{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7608-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7608-8","canonicalUrl":"https://aoctrl.com/siemens/5SY7608-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7608-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON miniature circuit breaker, 5SY7608-8, D characteristic, 8 A, 4-pole (3P+N), 15 kA per EN 60898, 30 kA per IEC 60947-2.","salesMarkdown":"## What the ratings mean for fit The Siemens SENTRON 5SY7608-8 is a 4-pole miniature circuit breaker (3P+N) with a D tripping characteristic, rated 8 A at 35 °C. The D curve means it tolerates high inrush currents — typically 10–20× rated current before instantaneous trip — so it is sized for motor, transformer, or heavy inductive loads where a B or C curve would nuisance-trip on startup. Breaking capacity is 15 kA under EN 60898 and 30 kA under IEC 60947-2, giving headroom for high-fault industrial panels. At 400 V AC, overvoltage category III, pollution degree 3 — standard for fixed-installation distribution boards. ## Temperature derating — real-world current Rated current drops with ambient temperature: 8 A at 35 °C, 7.26 A at 45 °C, 6.99 A at 50 °C, 6.72 A at 55 °C, 6.43 A at 60 °C. If the breaker lives in a warm enclosure or next to other heat sources, size the load to the derated value at the expected ambient — not the 35 °C figure. ## Mounting and integration Snaps onto DIN rail via the quick-assembly system; 4 modular width units (72 mm wide). Mounting position any — vertical or horizontal in the panel. Installation depth 70 mm plus conductor space; overall depth 76 mm. IP20 with connected conductors — protected against finger contact but not washdown; keep inside the enclosure. Combined terminals top and bottom accept standard copper conductors. Sealable, halogen-free, silicon-free — suitable for clean-room or low-outgassing environments. ## Lifecycle and sourcing Current production — no end-of-life notice. Sourced and quoted to order against an RFQ through independent distribution.","metaTitle":"Siemens SENTRON 5SY7608-8 MCB, D Curve, 8 A, 4-Pole, 15/30 k","metaDescription":"Siemens SENTRON 5SY7608-8 miniature circuit breaker, 8 A, D tripping characteristic, 4-pole (3P+N), 15 kA (EN 60898) / 30 kA (IEC 60947-2). Current production. Sourced to order aga","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"72 mm","title":"5SY7608-8","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 15kA, 3+N-pole, D, 8A, D=70 mm","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"4","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":"3P+N","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":"4","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 Function / Neutral Conductor Switching":"Yes","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 (Operating Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f0ffaf9cef4f65b5928184d7755d9401.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=70230&mlfb=5SY7608-8"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7608-8","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/5SY7608-8 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}}