{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4514-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4514-8","canonicalUrl":"https://aoctrl.com/siemens/5SY4514-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4514-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4514-8, miniature circuit breaker, 2-pole 1P+N, rated current 0.3 A, D tripping characteristic, breaking capacity 10 kA acc. to EN 60898, 35 kA acc. to IEC 60947-2.","salesMarkdown":"The Siemens SENTRON 5SY4514-8 is a 2-pole (1P+N) miniature circuit breaker with a rated current of 0.3 A at 230 V AC and a D tripping characteristic. At 0.3 A, this is sized for a small control transformer or a single low-power motor circuit, not a general lighting or receptacle branch. Breaking capacity is rated at 10 kA per EN 60898, 35 kA per IEC 60947-2, and 15 kA at DC per IEC 60947-2. The UL 1077 / CSA C22.2 No. 235 rating of 5 kA covers North American supplementary protection applications. Mounts on a DIN rail via the quick-assembly system, occupies 2 width units (36 mm), and accepts conductors from 0.75 to 35 mm² solid or stranded. ## Deployment context Rated for ambient temperatures from -40 to +70 °C and storage from -40 to +75 °C, with humidity limits up to 95% at 55 °C. Suitability for mechanical engineering and industry is stated on the product.","metaTitle":"Siemens 5SY4514-8 SENTRON MCB, 2-pole 0.3A D-curve, 10kA","metaDescription":"Siemens SENTRON 5SY4514-8 miniature circuit breaker, 2-pole 1P+N, 0.3 A rated current, D tripping characteristic, breaking capacity 10 kA (EN 60898) / 35 kA (IEC 60947-2). Active p","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 35 mm²","Width":"36 mm","title":"5SY4514-8","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 35 mm²","Rated Value":"50/60 Hz","description":"Miniature circuit breaker 230 V 10kA, 1+N-pole, D, 0.3 A, D=70 mm","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting type":"Quick assembly system","During Storage":"-40 ... +75 °C","Number of poles":"2","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-40 ... +70 °C","Product designation":"Miniature circuit breaker","Protection class IP":"IP20, with connected conductors","at AC / rated value":"230 V","Overvoltage category":"III","Combined Terminal Top":"Yes","Number of width units":"2","Number of poles / Note":"1P+N","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","Combined Terminal Bottom":"Yes","circuit-breaker / Design":"5SY4","Suitability for operation":"Mechanical engineering / industry","Current / at AC / rated value":"0.3 A","Tripping characteristic class":"D","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"10 kA","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"35 kA","Product feature / Touch protection":"Yes","Influence of the surrounding temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","at DC / acc. to IEC 60947-2 / rated value":"15 kA","at AC / acc. to UL 1077 and CSA C22.2 No.235":"5 kA","Tightening torque / with screw-type terminals":"2.5 ... 3.5 N·m","Product function / neutral conductor switching":"Yes","with single-phase operation / at AC / rated value":"250 V","Mechanical service life (switching cycles) / typical":"10 000","Tightening torque [lbf·in] / with screw-type terminals":"22 ... 31 lbf·in","AWG number / as coded connectable conductor cross section":"18 ... 4"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1ef7636a75a10e7dad3458cb15060ffe.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=280396&mlfb=5SY4514-8"},"ai":{"faq":[{"question":"Where can I buy 5SY4514-8 and how do I get a price?","answer":"The 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 is 5SY4514-8's listed depth (76 mm) on this component line?","answer":"The depth is 76 mm, with an installation depth of 70 mm. Width is 36 mm (2 width units), height is 90 mm."},{"question":"What is 5SY4514-8's listed solid (0.75... 35 mm²) on this component line?","answer":"The terminal accepts solid conductors from 0.75 to 35 mm² and stranded conductors from 0.75 to 35 mm². Both top and bottom terminals are combined (screw and clamp) and touch-protected."},{"question":"What compliance documentation does this brand provide for 5SY4514-8 (RoHS, REACH, UL, IEC)?","answer":"The breaker carries ratings per EN 60898, IEC 60947-2, UL 1077, and CSA C22.2 No. 235. It is halogen-free and silicon-free. For RoHS/REACH declarations, refer to the manufacturer's compliance documentation available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4514-8","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/5SY4514-8 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}}