{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4140-7CV","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4140-7CV","canonicalUrl":"https://aoctrl.com/siemens/5SY4140-7CV","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4140-7CV","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SY series MCB, 1-pole C-curve 40 A, Icu=15 kA at 230/400 V AC.","salesMarkdown":"## What the 15 kA Icu means for your panel Its 15 kA Icu (ultimate breaking capacity) at 230/400 V AC means it can safely interrupt a fault current up to 15,000 A without welding its contacts or cascading the fault upstream — that's the figure that governs selectivity coordination in a distribution board. Snap-on DIN rail mount, 1 module width (18 mm). The 15 kA Icu rating holds without requiring a separate current-limiting backup fuse in most 230/400 V distribution panels — check your upstream device's let-through energy (I²t) for full selectivity. Terminal capacity accepts up to 25 mm² conductor; torque to 2.5 Nm.","metaTitle":"Siemens 5SY4140-7CV MCB, 1P C40, 15kA Icu","metaDescription":"Siemens 5SY4140-7CV miniature circuit breaker, 1-pole C-curve 40A, 15kA breaking capacity at 230/400V. Current-production part, sourced to order. Request a quote for pricing and le","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/f4f0e62e17d426e9868d767ad292c5ac.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1531886&mlfb=5SY4140-7CV","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY4140-7CV/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SY4140-7CV?","answer":"The Icu (ultimate breaking capacity) is 15 kA at 230/400 V AC, single-pole."},{"question":"Where can I buy the 5SY4140-7CV and what is the lead time?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit a request for a firm price and delivery window."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4140-7CV","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/5SY4140-7CV 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}}