{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7310-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7310-8","canonicalUrl":"https://aoctrl.com/siemens/5SY7310-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7310-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7310-8, 3-pole miniature circuit breaker, D-curve, 15 kA (EN 60898) / 30 kA (IEC 60947-2), 400 V AC, 3 modular width units.","salesMarkdown":"The D-curve means the magnetic trip threshold is set at 10 to 20 times rated current, so it passes the startup surge and clears only on a hard fault. Rated breaking capacity is 15 kA per EN 60898-1 and 30 kA per IEC 60947-2 at 400 V AC, with a DC rating of 15 kA at 60 V (max 72 V). That dual rating covers most panel SCCR requirements in Europe and North America — the 30 kA IEC figure is the one to use for industrial coordination studies. UL 1077 recognition gives it 5 kA for supplementary protection use in the US. The IP20 finger-safe terminals accept top and bottom combined conductors — no need for separate busbar feeders on each pole. The combined terminal design at both top and bottom means you can feed the same phase through multiple breakers without extra bridging — saves a busbar run on multi-pole groups. Environmental tolerance: -40°C to +75°C operating range, with humidity derating above 55°C (95% RH to 55°C, 55% to 70°C, 35% to 75°C). Vibration resistance per IEC 60068-2-6 covers ±1 mm at 5–25 Hz and 50 m/s² at 25–150 Hz — fine for machine-mounted panels.","metaTitle":"Siemens 5SY7310-8 SENTRON MCB, 3P D-curve, 15/30 kA","metaDescription":"Siemens 5SY7310-8 SENTRON miniature circuit breaker, 3-pole, D-curve, 15 kA (EN 60898) / 30 kA (IEC 60947-2) breaking capacity, 400 V AC. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"54 mm","title":"5SY7310-8","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60898-1, IEC / EN 60947-2 / UL1077","description":"Miniature circuit breaker 400 V 15kA, 3-pole, D, 10A, D=70 mm","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"3P","Number Of Poles":"3","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"400 V","at DC rated value":"60 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":"3","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"D","according to EN 60898 rated value":"15 kA","according to IEC 60947-2 rated value":"30 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","operating voltage at DC rated value maximum":"72 V","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/e1c008ed40193ea5a998d893b2fef08d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=538395&mlfb=5SY7310-8"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY7310-8?","answer":"15 kA per EN 60898-1 and 30 kA per IEC 60947-2 at 400 V AC; 15 kA at 60 V DC per IEC 60947-2; 5 kA per UL 1077."},{"question":"Where can I buy 5SY7310-8?","answer":"This part 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 difference between 5SY7310-8 and 5SY4304-7CV?","answer":"The 5SY4304-7CV is a 4-pole, C-curve breaker with a lower breaking capacity (10 kA per EN 60898). The 5SY7310-8 is 3-pole, D-curve, and carries 15/30 kA — so it's a different pole count, trip characteristic, and fault rating. It will not drop into a panel wired for the 4-pole without rewiring the neutral and re-evaluating selectivity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7310-8","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/5SY7310-8 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}}