{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY5214-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY5214-7","canonicalUrl":"https://aoctrl.com/siemens/5SY5214-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY5214-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY5214-7 miniature circuit breaker, 2-pole, C-curve, 0.3 A rated current, 10 kA breaking capacity, 440 V DC rated voltage.","salesMarkdown":"## What this 0.3 A C-curve MCB is for The Siemens SENTRON 5SY5214-7 is a 2-pole miniature circuit breaker rated at 0.3 A AC (0.28 A at 40 °C) with a C tripping characteristic and a 10 kA breaking capacity per IEC/EN 60898-2 and UL1077. That low current rating makes it a fit for protecting control transformers, signal circuits, or small instrumentation supplies inside a panel — not motor circuits. This breaker is rated 0.3 A at 35 °C, but the thermal trip element derates as ambient climbs: 0.28 A at 40 °C, 0.27 A at 45 °C, 0.26 A at 50 °C, 0.25 A at 55 °C, and 0.24 A at 60 °C. The breaker is 76 mm deep, 36 mm wide (2 modular units), and 90 mm tall. It uses the quick-assembly snap-on fastening to DIN rail, with combined top and bottom terminals for daisy-chaining. It's sealable, halogen-free, and silicon-free.","metaTitle":"Siemens 5SY5214-7 SENTRON MCB, 2P C 0.3A 10kA","metaDescription":"Siemens SENTRON 5SY5214-7 miniature circuit breaker, 2-pole, C-curve, 0.3 A, 10 kA breaking capacity per IEC/EN 60898-2. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","title":"5SY5214-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60898-2, UL1077","description":"Circuit breaker Universal current 440 V DC 400 V AC 10kA, 2-pole, C, 0.3 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"2P","Number Of Poles":"2","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"0.3 A","at DC rated value":"440 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","at 35 °C rated value":"0.3 A","at 40 °C rated value":"0.28 A","at 45 °C rated value":"0.27 A","at 50 °C rated value":"0.26 A","at 55 °C rated value":"0.25 A","at 60 °C rated value":"0.24 A","Energy Limitation Class":"3","according to EN 61346-2":"F","Combined Terminal Bottom":"Yes","according to IEC 81346-2":"F","Suitability For Operation":"universal current","Neutral Conductor Switching":"No","Number Of Modular Width Units":"2","Position Of Power Supply Cord":"AC as required, observe DC polarity","Tripping Characteristic Class":"C","at DC according to EN 60898-2":"10 kA","according to EN 60898 rated value":"10 kA","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","Type Of Voltage Of The Operating Voltage":"AC/DC","at DC according to IEC 60947-2 rated value":"15 kA","Value Range Of The Supply Voltage Frequency":"50/60 Hz","operating voltage at DC rated value maximum":"500 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","vibration resistance according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Mechanical Service Life (Switching Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","power loss [W] for rated value of the current at AC in hot operating state per pole":"0.9 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1bf3b8011356b8ec9242ec10f13a5a1a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=263378&mlfb=5SY5214-7"},"ai":{"faq":[{"question":"Where can I buy 5SY5214-7?","answer":"We source and quote the 5SY5214-7 to order against an RFQ. Availability and current pricing are confirmed at quote time."},{"question":"What is 5SY5214-7's depth and width?","answer":"The 5SY5214-7 has a depth of 76 mm and a width of 36 mm (2 modular units)."},{"question":"What standards does 5SY5214-7 comply with?","answer":"The 5SY5214-7 complies with IEC/EN 60898-2 and UL1077, with pollution degree 3 and overvoltage category III."},{"question":"Will 5SY5214-7 drop into a panel specified around 5SY5240-7?","answer":"The 5SY5240-7 is a higher-current variant (40 A) in the same SENTRON 5SY series. Both share the same 2-pole, 2-module-width footprint and DIN-rail mounting, so mechanical fit is the same. The difference is the current rating and tripping curve — verify the load current before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY5214-7","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/5SY5214-7 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}}