{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4214-8CC11","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4214-8CC11","canonicalUrl":"https://aoctrl.com/siemens/5SY4214-8CC11","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4214-8CC11","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SY4214-8CC11 miniature circuit breaker, 400 V 10kA, 2-pole, D-curve, 0.3 A, railway applications.","salesMarkdown":"The Siemens 5SY4214-8CC11 is a 2-pole miniature circuit breaker rated 400 V with a 10 kA breaking capacity, a D tripping characteristic, and a 0.3 A current rating, specifically designated for railway applications. The D-curve magnetic trip handles inrush from inductive loads like contactors and relays. At 0.3 A it protects control circuits, signaling loops, or auxiliary supply taps. The 2-pole configuration switches both line and neutral for single-phase AC or DC control circuits. This MCB is built for rail-vehicle and trackside panels where vibration, wide temperature swings, and DC auxiliary supplies are the norm. The D-curve and 0.3 A rating make it a common choice for protecting a 24 VDC control transformer secondary or a signaling relay bank in a locomotive electrical cabinet. This order code is specified into the railway MCB slot.","metaTitle":"Siemens 5SY4214-8CC11 MCB, 2-pole D 0.3 A, 400V 10kA","metaDescription":"Siemens 5SY4214-8CC11 miniature circuit breaker, 400 V 10kA, 2-pole, D-curve, 0.3 A, for railway applications. 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":"5SY4214-8CC11","description":"Miniature circuit breaker 400 V 10kA, 2-pole, D, 0.3 A for railway applications","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/fffdc073ac3262c7b44c29b78f743a43.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=136977&mlfb=5SY4214-8CC11"},"ai":{"faq":[{"question":"What is 5SY4214-8CC11 used for?","answer":"It is a 2-pole miniature circuit breaker with a D-curve, rated 400 V, 10 kA, and 0.3 A, designed for railway applications — typically protecting control circuits, signaling loops, or auxiliary supplies in rail vehicles and trackside equipment."},{"question":"Where can I buy 5SY4214-8CC11?","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/5SY4214-8CC11","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/5SY4214-8CC11 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}}