{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7414-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7414-8","canonicalUrl":"https://aoctrl.com/siemens/5SY7414-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7414-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7414-8, 4-pole miniature circuit breaker, D tripping characteristic, 0.29 A rated current at 400 V AC, 15 kA (EN 60898) / 50 kA (IEC 60947-2) breaking capacity.","salesMarkdown":"Rated 0.29 A at 400 V AC (50/60 Hz), it carries a breaking capacity of 15 kA per EN 60898 and 50 kA per IEC 60947-2, giving you headroom for high-fault installations. ## Ratings that matter for fit The 0.29 A rating at 40 °C is the continuous current the breaker can carry without tripping; at higher ambient temperatures the value derates stepwise to 0.25 A at 60 °C (–). The 5SY7414-8 occupies 4 modular width units (72 mm wide) on a DIN rail, with a depth of 76 mm and an installation depth of 70 mm. It mounts in any position and accepts conductors via combined top and bottom terminals. The sealable design allows lockout/tagout without removing the breaker.","metaTitle":"Siemens 5SY7414-8 SENTRON MCB, 4P, D-curve, 0.29 A, 15/50 kA","metaDescription":"Siemens 5SY7414-8 SENTRON miniature circuit breaker, 4-pole, D tripping characteristic, rated 0.29 A at 400 V AC, breaking capacity 15 kA (EN 60898) / 50 kA (IEC 60947-2). Active p","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Width":"72 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"4","Type Of Voltage":"AC","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","acc. to IEC 81346-2":"F","at AC / rated value":"400 V","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Number Of Poles / Note":"4P","acc. to DIN EN 61346-2":"F","at 40 °C / rated value":"0.29 A","at 45 °C / rated value":"0.28 A","at 50 °C / rated value":"0.27 A","at 55 °C / rated value":"0.26 A","at 60 °C / rated value":"0.25 A","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"4","Tripping Characteristic Class":"D","acc. to EN 60898 / rated value":"15 kA","Position / Of Power Supply Cord":"Any","acc. to IEC 60947-2 / rated value":"50 kA","Product Feature / Touch Protection":"Yes","Supply Voltage Frequency / Rated Value":"50/60 Hz","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","vibration resistance / acc. to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Product Function / Neutral Conductor Switching":"No","with multi-phase operation / at AC / rated value":"440 V","operating voltage / at DC / rated value / maximum":"72 V","with single-phase operation / at AC / rated value":"440 V","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=339869&mlfb=5SY7414-8","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY7414-8/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY7414-8?","answer":"15 kA per EN 60898 and 50 kA per IEC 60947-2. The IEC 60947-2 figure is the one most industrial specifications reference for coordination studies."},{"question":"What does the D tripping characteristic mean?","answer":"The D curve trips at 10 to 20 times the rated current (In), so the 0.29 A breaker will hold through inrush up to roughly 2.9–5.8 A before opening. That suits loads with high starting currents — motors, transformers, or discharge lamps — where a B or C curve would trip on startup."},{"question":"Where can I buy 5SY7414-8 and how is it quoted?","answer":"Sourced to order through our independent distribution channel. Submit an RFQ; availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7414-8","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/5SY7414-8 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}}