{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7308-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7308-7","canonicalUrl":"https://aoctrl.com/siemens/5SY7308-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7308-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7308-7, 3-pole miniature circuit breaker, C characteristic, 15 kA (EN 60898) / 30 kA (IEC 60947-2) at 400 V AC, 50/60 Hz.","salesMarkdown":"Its C tripping characteristic means it handles moderate inrush — typical for motor starters, lighting banks, and transformer-fed loads — without nuisance trips on startup, while still clearing short-circuit faults fast enough to protect downstream wiring. The 15 kA breaking capacity to EN 60898 and 30 kA to IEC 60947-2 at 400 V AC tell you this breaker can safely interrupt faults up to those levels without cascading upstream; the higher IEC figure applies when the device is used as a selective main or in an industrial panel where the prospective fault current is higher. That dual rating is the spec that decides whether this part fits your switchboard's SCCR study. ## Deployment context Snap-on mounting to DIN rail (: quick assembly system) in any position, so it integrates into standard distribution boards and control panels without orientation restrictions. The 3-module-width footprint (: 3 modular width units) at 54 mm wide and 76 mm deep fits standard enclosure cutouts. Halogen-free and silicon-free construction, with a sealed terminal option (: sealable Yes) for tamper-proof installations. Vibration resistance per IEC 60068-2-6 covers ±1 mm at 5–25 Hz and 50 m/s² at 25–150 Hz — sufficient for machine-mounted panels on pumps or compressors.","metaTitle":"Siemens SENTRON 5SY7308-7 MCB, 3P C-curve 15/30 kA","metaDescription":"Siemens SENTRON 5SY7308-7 miniature circuit breaker, 3-pole, C characteristic, 15 kA (EN 60898) / 30 kA (IEC 60947-2) at 400 V AC. 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":"54 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"3","Type Of Voltage":"AC","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":"400 V","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Number Of Poles / Note":"3P","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"3","Tripping Characteristic Class":"C","acc. to EN 60898 / rated value":"15 kA","Position / Of Power Supply Cord":"Any","acc. to IEC 60947-2 / rated value":"30 kA","Product Feature / Touch Protection":"Yes","Supply Voltage Frequency / Rated Value":"50/60 Hz","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","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 Function / 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/02b57fbf548329e39d7b4022fe0989f8.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=212003&mlfb=5SY7308-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY7308-7/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SY7308-7?","answer":"Submit an RFQ through this listing. The part is sourced to order via independent distribution; pricing and stock are confirmed at quote time."},{"question":"What is 5SY7308-7's breaking capacity at 400 V?","answer":"15 kA per EN 60898 and 30 kA per IEC 60947-2 at 400 V AC, 50/60 Hz."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7308-7","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/5SY7308-7 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}}