{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY8214-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY8214-7","canonicalUrl":"https://aoctrl.com/siemens/5SY8214-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY8214-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY8214-7 miniature circuit breaker, 2-pole, C-curve, 70 kA at 400 V AC per IEC 60947-2, 36 mm width.","salesMarkdown":"The Siemens 5SY8214-7 is a 2-pole miniature circuit breaker from the SENTRON series, with a C-curve tripping characteristic. It's rated for 70 kA breaking capacity at 400 V AC per IEC 60947-2, and also carries a 15 kA DC rating at 440 V per the same standard. For UL 1077 and CSA C22.2 No. 235 installations, the interrupting capacity is 5 kA. This dual-standard listing means the part can be specified into panels destined for IEC or North American markets without swapping breakers. ## What the ratings mean for panel fit The 70 kA at 400 V AC is the short-circuit current rating (SCCR) the breaker can safely interrupt under fault conditions — critical for selectivity studies and ensuring upstream devices don't have to clear a fault that this breaker can handle alone. The 15 kA DC rating at 440 V covers DC bus or battery-string protection where AC-rated breakers often derate sharply. The C-curve (magnetic trip between 5 and 10 times In) suits moderate inrush loads like motor control circuits or small transformers, where a B-curve would nuisance-trip and a D-curve would let too much fault energy through. At 36 mm wide (2 modular width units), it snaps onto a standard DIN rail in any mounting position. The IP20 rating with connected conductors is standard for enclosed panel mounting — not for wet or outdoor locations. The operating temperature range of -40 to 75 °C covers most industrial environments, including unheated warehouses or cabinets near ovens. The 10 000 mechanical operating cycles typical service life is standard for an MCB in distribution duty; this is not a switching device for frequent load cycling. The part is sealable and halogen-free / silicon-free, which matters for clean-room or food-grade installations where outgassing contaminants are a concern.","metaTitle":"Siemens 5SY8214-7 SENTRON MCB, 2-Pole C-Curve, 70 kA","metaDescription":"Siemens 5SY8214-7 SENTRON miniature circuit breaker, 2-pole, C-curve, 70 kA at 400 V AC per IEC 60947-2. Active production. Sourced and quoted to order. Request RFQ.","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":"5SY8214-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60947-2 / UL1077","description":"Miniature circuit breaker 400 V D=70 mm 25 kA according to EN 60947-2, 2P, C0.3","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":"400 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","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"2","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"C","according to IEC 60947-2 rated value":"70 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","at DC according to IEC 60947-2 rated value":"15 kA","Value Range Of The Supply Voltage Frequency":"50/60 Hz","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","at AC according to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","supply voltage with single-phase operation at AC rated value":"230 V","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/aff24da9108dfd83da1b39836f4bb99d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=303140&mlfb=5SY8214-7"},"ai":{"faq":[{"question":"Where can I buy the 5SY8214-7 and get a price?","answer":"The 5SY8214-7 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of the 5SY8214-7?","answer":"70 kA at 400 V AC per IEC 60947-2, 15 kA at 440 V DC per IEC 60947-2, and 5 kA per UL 1077 / CSA C22.2 No. 235."},{"question":"What compliance documentation does the 5SY8214-7 carry?","answer":"The breaker is certified to IEC / EN 60947-2 and UL 1077. It is halogen-free and silicon-free. The manufacturer provides the standard declaration of conformity and CE marking for the EU market."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY8214-7","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/5SY8214-7 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}}