{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4314-8CV","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4314-8CV","canonicalUrl":"https://aoctrl.com/siemens/5SY4314-8CV","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4314-8CV","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SY4314-8CV, 3-pole miniature circuit breaker, D0.3 characteristic, 15 kA breaking capacity at 400 V AC.","salesMarkdown":"The Siemens 5SY4314-8CV is a 3-pole miniature circuit breaker (MCB) with a D tripping characteristic and a rated current of 0.3 A. Its headline rating is a 15 kA breaking capacity at 400 V AC — that is the maximum fault current it can safely interrupt without welding contacts or rupturing the enclosure, which is the figure that governs coordination with upstream protective devices in a distribution panel. The D0.3 curve means this MCB is designed for loads with high inrush current relative to steady-state draw — typically small transformers, solenoid valves, or control-circuit power supplies where the magnetic trip must ride through the initial surge. The 3-pole configuration suits it for three-phase branch circuits in a DIN-rail distribution board, where the 15 kA SCCR at 400 V provides enough headroom for most industrial panel secondary distribution.","metaTitle":"Siemens 5SY4314-8CV MCB, 15kA 400V 3P D0.3","metaDescription":"Siemens 5SY4314-8CV miniature circuit breaker, 15kA breaking capacity at 400V, 3-pole, D0.3 curve. Current lifecycle stage: active. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"title":"5SY4314-8CV","description":"MCB Icu=15KA 400V 3P D0.3","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/af2b7dc6f4059b83a9f8a55561c39ce2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1531589&mlfb=5SY4314-8CV"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY4314-8CV?","answer":"The 5SY4314-8CV has a rated breaking capacity of 15 kA at 400 V AC, which is the maximum fault current it can safely interrupt."},{"question":"Where can I buy 5SY4314-8CV?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4314-8CV","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/5SY4314-8CV 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}}