{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4614-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4614-8","canonicalUrl":"https://aoctrl.com/siemens/5SY4614-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4614-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4 series miniature circuit breaker, 4-pole (3P+N), D tripping characteristic, 0.3 A rated current, 10 kA breaking capacity per EN 60898, 400 V AC.","salesMarkdown":"The Siemens SENTRON 5SY4614-8 is a 4-pole miniature circuit breaker (3P+N) with a D tripping characteristic, rated at 0.3 A and 400 V AC. ## Breaking capacity and approvals Rated breaking capacity is 10 kA per EN 60898, 35 kA per IEC 60947-2 at 400 V AC, and 15 kA at the DC maximum of 72 V. For UL 1077 / CSA C22.2 No. 235 applications, the interrupting rating is 5 kA at AC. The overvoltage category is III, suitable for fixed-installation distribution panels. Mounting position is any; the quick-assembly system snaps onto DIN rail. Touch protection is integrated.","metaTitle":"Siemens 5SY4614-8 SENTRON MCB, 4-pole D-curve 0.3 A, 10 kA","metaDescription":"Siemens SENTRON 5SY4614-8 miniature circuit breaker, 4-pole 3P+N, D tripping characteristic, 0.3 A rated current, 10 kA breaking capacity per EN 60898. Current lifecycle, available","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 35 mm²","Width":"72 mm","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 35 mm²","Rated Value":"50/60 Hz","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting type":"Quick assembly system","During Storage":"-40 ... +75 °C","Number of poles":"4","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":"400 V","Overvoltage category":"III","Combined Terminal Top":"Yes","Number of width units":"4","Number of poles / Note":"3P+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 multi-phase operation / at AC / rated value":"440 V","with single-phase operation / at AC / rated value":"440 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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c543f730516c2cf25cf9512281592fb5.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=454414&mlfb=5SY4614-8","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY4614-8/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY4614-8?","answer":"The breaking capacity is 10 kA per EN 60898, 35 kA per IEC 60947-2 at 400 V AC, 15 kA at 72 V DC, and 5 kA per UL 1077 / CSA C22.2 No. 235 at AC."},{"question":"What does the D tripping characteristic mean on this breaker?","answer":"The D-curve magnetic trip activates at 10–20× rated current (3–6 A for this 0.3 A unit), designed for loads with high inrush like motors, transformers, and solenoid valves. It prevents nuisance tripping on startup while still clearing short circuits."},{"question":"What conductor sizes does 5SY4614-8 accept?","answer":"It accepts 0.75 to 35 mm² solid or stranded copper conductors. The combined terminals at top and bottom support both wire types."},{"question":"Where can I buy 5SY4614-8?","answer":"This part is sourced and quoted to order against an RFQ through independent industrial-automation distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm delivery commitment."},{"question":"Will 5SY4614-8 drop into a panel specified around 5SY4140-7 without rewiring?","answer":"Both are 4-pole SENTRON 5SY4 breakers with the same module width (4 MW = 72 mm) and DIN-rail mounting. The 5SY4614-8 is a 0.3 A D-curve; the 5SY4140-7 is a different rating and curve. Panel cutout and busbar pitch are identical, so mechanical fit is the same — no rewiring of the enclosure needed, but verify the rating and curve match the circuit protection requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4614-8","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/5SY4614-8 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}}