{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4108-8CC11","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4108-8CC11","canonicalUrl":"https://aoctrl.com/siemens/5SY4108-8CC11","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4108-8CC11","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4108-8CC11, 1-pole miniature circuit breaker, D tripping characteristic, 8 A rated current, 10 kA breaking capacity per EN 60898, IP20.","salesMarkdown":"## Siemens SENTRON 5SY4108-8CC11 — D-curve 8 A MCB for high-inrush loads The Siemens SENTRON 5SY4108-8CC11 is a 1-pole miniature circuit breaker with a D tripping characteristic, rated 8 A at AC and a 10 kA breaking capacity per EN 60898. It's designed for railway applications and carries IP20 protection with connected conductors. The 8 A rating at 35 °C derates to 7.35 A at 40 °C, 7 A at 45 °C, 6.63 A at 50 °C, 6.25 A at 55 °C, and 5.83 A at 60 °C. If the panel ambient runs at 50 °C, the breaker is good for about 6.6 A continuous — size the load accordingly. Mounting position any. Combined terminals top and bottom — wire both sides without removing the busbar. Touch protection built in. Sealable for tamper-evident installations. Halogen-free and silicon-free for environments sensitive to outgassing.","metaTitle":"Siemens 5SY4108-8CC11 SENTRON MCB, 1P D 8A, 10kA","metaDescription":"Siemens SENTRON 5SY4108-8CC11 miniature circuit breaker, 1-pole D-curve 8A, 10kA breaking capacity per EN 60898. IP20, -40 to 75°C. Active production, sourced to order. Request quo","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","title":"5SY4108-8CC11","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 230/400 V 10kA, 1-pole, D, 8A for railway applications","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P","Number Of Poles":"1","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","Design Of The Product":"For railway applications","acc. to DIN EN 61346-2":"F","at 35 °C / rated value":"8 A","at 40 °C / rated value":"7.35 A","at 45 °C / rated value":"7 A","at 50 °C / rated value":"6.63 A","at 55 °C / rated value":"6.25 A","at 60 °C / rated value":"5.83 A","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"1","Tripping Characteristic Class":"D","acc. to EN 60898 / rated value":"10 kA","Position / Of Power Supply Cord":"Any","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","Type Of Voltage / Of The Operating Voltage":"AC","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/e0852a3d23307b9a6a9d5251f2adb343.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=224387&mlfb=5SY4108-8CC11"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY4108-8CC11?","answer":"10 kA rated breaking capacity per EN 60898. This is the maximum prospective fault current it can safely interrupt at the rated voltage."},{"question":"What does the D tripping characteristic mean for this breaker?","answer":"The D curve has a magnetic trip threshold of 10–20× rated current (80–160 A for this 8 A unit). It's designed for circuits with high inrush — motor starters, transformers, power supplies — where a B or C curve would nuisance-trip on start-up."},{"question":"What are the temperature derating values for 5SY4108-8CC11?","answer":"Rated 8 A at 35 °C, derated to 7.35 A at 40 °C, 7 A at 45 °C, 6.63 A at 50 °C, 6.25 A at 55 °C, and 5.83 A at 60 °C."},{"question":"Where can I buy 5SY4108-8CC11 and get current pricing?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an inquiry for a firm quote."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4108-8CC11","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/5SY4108-8CC11 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}}