{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY6414-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY6414-7","canonicalUrl":"https://aoctrl.com/siemens/5SY6414-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY6414-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY6414-7, 4-pole miniature circuit breaker, C-curve, 0.3 A rated current, 6 kA breaking capacity per IEC 60898, 30 kA per IEC 60947-2.","salesMarkdown":"## What this 0.3 A 4-pole MCB is for It protects final circuits in industrial control panels against overload and short-circuit currents, with a breaking capacity of 6 kA per EN 60898 and 30 kA per IEC 60947-2 — the higher figure matters when the breaker sits downstream of a high-capacity transformer where fault current can exceed 10 kA. Across the three standards listed, this breaker covers the common global specs: 6 kA per EN 60898 for residential and light commercial, 30 kA per IEC 60947-2 for industrial panels where fault levels are higher, 15 kA for DC circuits per the same IEC standard, and 5 kA per UL 1077 for North American supplementary protection. The 30 kA figure gives you selectivity headroom downstream of a larger feeder breaker — you can coordinate so only this pole trips on a fault, not the upstream device. Energy limitation class 3 means it lets through less let-through energy (I²t) than class 2 or 1 breakers, which reduces stress on downstream wiring and connected equipment during a short circuit. ## Thermal derating — the real-world current rating The 0.3 A rating holds at 35 °C ambient. At 45 °C it derates to 0.28 A, at 50 °C to 0.27 A, and at 55 °C to 0.26 A (–). If this breaker lives in a non-ventilated enclosure near transformers or drives, you need to account for that — a 0.26 A continuous load at 55 °C is the actual limit, not the nameplate 0.3 A.","metaTitle":"Siemens 5SY6414-7 SENTRON MCB, 4P C-Curve 0.3A, 6kA","metaDescription":"Siemens 5SY6414-7 SENTRON 4-pole miniature circuit breaker, 0.3 A C-curve, 6 kA (IEC 60898) / 30 kA (IEC 60947-2). Active production. Sourced to order against RFQ.","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","Design Of Pole":"4P","Number Of Poles":"4","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":"0.3 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","at 35 °C / rated value":"0.3 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","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"4","Tripping Characteristic Class":"C","acc. to EN 60898 / rated value":"6 kA","Position / Of Power Supply Cord":"Any","acc. to IEC 60947-2 / rated value":"30 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","Type Of Voltage / Of The Operating Voltage":"AC","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 Component / 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":"https://cdn.aoctrl.com/75a40d1979cbf6cb1b5b4a8f7f558680.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=416131&mlfb=5SY6414-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY6414-7/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SY6414-7 and how do I get a price?","answer":"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 quote."},{"question":"What is the difference between 5SY6414-7 and 5SY4304-7CV?","answer":"The 5SY4304-7CV is a 4-pole C-curve breaker from the same SENTRON family but with a different rated current. The 5SY6414-7 is rated 0.3 A; the peer is a different current rating. Both share the same 4-pole form factor, C-curve, and breaking capacity ratings — they are dimensionally interchangeable in the same DIN-rail panel, but the current rating must match the circuit protection requirement."},{"question":"What is 5SY6414-7's depth?","answer":"Depth is 76 mm. Installation depth is 70 mm — the difference accounts for the terminal projection beyond the DIN-rail mounting surface."},{"question":"What compliance documentation does this breaker carry?","answer":"The breaker is rated per EN 60898 (6 kA), IEC 60947-2 (30 kA AC, 15 kA DC), and UL 1077 / CSA C22.2 No. 235 (5 kA). It is halogen-free and silicon-free. The SENTRON series carries CE, UKCA, and EAC markings per standard Siemens documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY6414-7","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/5SY6414-7 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}}