{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4125-8CV","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4125-8CV","canonicalUrl":"https://aoctrl.com/siemens/5SY4125-8CV","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4125-8CV","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SY4125-8CV, MCB, 1-pole D-curve 25 A, Icu 15 kA at 230/400 V AC.","salesMarkdown":"The Siemens 5SY4125-8CV is a 1-pole miniature circuit breaker (MCB) with a D tripping characteristic, rated 25 A and a breaking capacity (Icu) of 15 kA at 230/400 V AC. In a crowded panel, the D-curve and 15 kA rating let you coordinate downstream with a higher-rated upstream device — typical for a motor feeder branch where the breaker sits after a 63 A or 100 A molded-case switch.","metaTitle":"Siemens 5SY4125-8CV MCB, 1P D25, 15kA Icu 230/400V","metaDescription":"Siemens 5SY4125-8CV miniature circuit breaker, 1-pole D-curve 25A, 15kA breaking capacity at 230/400V. Current lifecycle stage. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f29c569b0508e765705f9f221096be90.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1531883&mlfb=5SY4125-8CV","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY4125-8CV/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SY4125-8CV?","answer":"The 5SY4125-8CV has a rated ultimate breaking capacity (Icu) of 15 kA at 230/400 V AC, single-pole."},{"question":"Where can I buy the 5SY4125-8CV and get current pricing?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What does the D-curve mean on this MCB?","answer":"The D tripping characteristic means the magnetic trip operates at 10–20× the rated current (250–500 A for this 25 A breaker), which suits loads with high inrush like motors, transformers, or discharge lighting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4125-8CV","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/5SY4125-8CV 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}}