{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY8316-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY8316-8","canonicalUrl":"https://aoctrl.com/siemens/5SY8316-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SY8316-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY8316-8 miniature circuit breaker, 3-pole, D characteristic, 16 A AC, 30 kA IEC 60947-2, 54 mm wide.","salesMarkdown":"## What this MCB is and where it fits The Siemens 5SY8316-8 is a SENTRON miniature circuit breaker with a D tripping characteristic, rated 16 A at AC and built for 3-pole (3P) isolation. The D curve means it tolerates the high inrush currents typical of motor starters, transformers, and discharge lighting — it won't nuisance-trip on a motor start but clears fast on a hard fault. It snaps onto a DIN rail and occupies 3 modular width units (54 mm wide), so it drops into any standard distribution board or control panel. ## Breaking capacity and selectivity Rated 30 kA per IEC 60947-2 at 440 V AC, and 15 kA at DC up to 72 V. That 30 kA figure is the interrupting rating — it can safely clear a fault current up to that level without welding contacts or rupturing the case. For a panel fed by a transformer with a high available fault current, this breaker gives you headroom for selective coordination downstream. ## Environmental and mounting notes Rated for ambient temperatures from -40 °C to +75 °C, with derated current values at elevated temps (15.5 A at 50 °C, 14.99 A at 55 °C). The housing is halogen-free and silicon-free, which matters for clean-room or food-grade zones where outgassing is a concern. IP20 with conductors connected — standard for enclosed distribution boards. Mounts in any position; quick-assembly system for busbar stacking.","metaTitle":"Siemens 5SY8316-8 SENTRON MCB, 3P, D Curve, 16 A, 30 kA","metaDescription":"Siemens 5SY8316-8 SENTRON miniature circuit breaker, 3-pole, D tripping characteristic, 16 A rated current, 30 kA breaking capacity per IEC 60947-2. Current lifecycle stage. Availa","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":"5SY8316-8","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V D=70 mm 25 kA according to EN 60947-2, 3P, D16","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":"16 A","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 45 °C rated value":"16 A","at 50 °C rated value":"15.5 A","at 55 °C rated value":"14.99 A","according to EN 61346-2":"F","Combined Terminal Bottom":"Yes","according to IEC 81346-2":"F","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 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 (Switching 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":"1.6 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4dfcd516af713bb97659ffe91f6c925e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=384411&mlfb=5SY8316-8"},"ai":{"faq":[{"question":"Where can I buy 5SY8316-8 and get a price?","answer":"This part is sourced and quoted to order through independent distribution. Submit an RFQ; availability and current pricing are confirmed at quote time."},{"question":"What is the closest functional second-source to 5SY8316-8?","answer":"The 5SY4140-7 is a peer in the same SENTRON family, but it is a different variant — verify the pole count, tripping characteristic, and breaking capacity match your application. The 5SY8316-8 is a 3-pole D-curve 16 A breaker with 30 kA IEC 60947-2."},{"question":"What compliance documentation does Siemens provide for 5SY8316-8?","answer":"The breaker carries a halogen-free and silicon-free housing, and is rated for overvoltage category III, pollution degree 3. Standard Siemens documentation includes the datasheet and declaration of conformity for IEC/EN 60947-2."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY8316-8","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/5SY8316-8 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}}