{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4210-8CV","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4210-8CV","canonicalUrl":"https://aoctrl.com/siemens/5SY4210-8CV","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4210-8CV","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SY4210-8CV, MCB Icu=15kA 400V 2P D10.","salesMarkdown":"The Siemens 5SY4210-8CV is a miniature circuit breaker (MCB) with a D10 tripping characteristic, rated for a 10 A load current. Its interrupting capacity is 15 kA at 400 V, which means it can safely clear a fault up to that level without welding its contacts or cascading failure upstream in a distribution board. The D curve is designed for loads with high inrush currents — motor starters, transformers, or discharge lighting — where the magnetic trip threshold is higher than a B or C curve to avoid nuisance tripping on startup. ## Integration and deployment The 5SY4210-8CV snaps onto standard DIN rail in a panel or enclosure. The 2-pole form factor occupies two modular-width positions. The D10 curve and 15 kA SCCR suit it for motor branch circuits or transformer primary protection where the inrush exceeds what a C-curve breaker would tolerate without tripping.","metaTitle":"Siemens 5SY4210-8CV MCB, 15kA 400V 2P D10","metaDescription":"Siemens 5SY4210-8CV miniature circuit breaker, 15kA interrupting capacity at 400V, 2-pole D10 curve. Current lifecycle stage. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"title":"5SY4210-8CV","description":"MCB Icu=15KA 400V 2P D10","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/043abf854198309980c62137bbf81d98.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1531549&mlfb=5SY4210-8CV"},"ai":{"faq":[{"question":"What is the interrupting rating of the 5SY4210-8CV?","answer":"The 5SY4210-8CV has an interrupting capacity of 15 kA at 400 V, which is the maximum fault current it can safely clear at that voltage."},{"question":"Where can I buy the 5SY4210-8CV?","answer":"The 5SY4210-8CV 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/5SY4210-8CV","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/5SY4210-8CV 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}}