{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4140-8CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4140-8CC","canonicalUrl":"https://aoctrl.com/siemens/5SY4140-8CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4140-8CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4140-8CC, miniature circuit breaker, 1-pole, 40 A, tripping characteristic D, 10 kA per EN 60898, 5 kA per UL 1077, IP20.","salesMarkdown":"## Thermal derating and ambient limits The 40 A rating holds at 35 °C ambient. At 40 °C it derates to 36.76 A, at 45 °C to 35 A, and at 55 °C to 31.24 A. Mounting position is any — horizontal, vertical, upside down — so it fits tight sub-panels without worrying about orientation. IP20 with conductors connected; pollution degree 3, overvoltage category III.","metaTitle":"Siemens SENTRON 5SY4140-8CC MCB, 1P 40A D-curve, 10kA IEC","metaDescription":"Siemens SENTRON 5SY4140-8CC miniature circuit breaker, 1-pole, 40 A, tripping characteristic D, 10 kA breaking capacity per EN 60898. Active production. Available to order.","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","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"1","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":"40 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Number Of Poles / Note":"1P","acc. to DIN EN 61346-2":"F","at 35 °C / rated value":"40 A","at 40 °C / rated value":"36.76 A","at 45 °C / rated value":"35 A","at 50 °C / rated value":"33.16 A","at 55 °C / rated value":"31.24 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","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 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 (Operating Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/0801b15dd2a4b03d8848ee6b96474ee9.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=215589&mlfb=5SY4140-8CC","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY4140-8CC/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4140-8CC","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/5SY4140-8CC 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}}