{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY8306-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY8306-7","canonicalUrl":"https://aoctrl.com/siemens/5SY8306-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY8306-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY8306-7, 3-pole miniature circuit breaker, C-curve, 50 kA (IEC 60947-2), 15 kA DC, 3 MW units wide.","salesMarkdown":"It's designed for branch-circuit protection in industrial control panels, mechanical engineering, and similar environments where moderate inrush currents from motor starters or transformers are expected. Rated breaking capacity is 50 kA at 400 V AC per IEC 60947-2, and 15 kA at 60 V DC. The DC rating of 15 kA at 60 V covers battery-backed control circuits or DC bus protection in the same panel. It also carries a UL 1077 listing at 5 kA, which is the supplementary protector rating for North American panels. Mounting position is any, so you can lay it sideways in a shallow enclosure if needed. Depth is 76 mm, with 70 mm installation depth — that's the space behind the panel face you need to clear for wiring and the arc chamber. The breaker is sealable, which matters for applications where you need to lock out the toggle position after commissioning to prevent unauthorized reset. This is an active-production part. Ambient temperature range is -40 °C to +75 °C, with derating above 55 °C: the breaker is rated for 95% humidity up to 55 °C, then 55% up to 70 °C, and 35% up to 75 °C. Vibration resistance per IEC 60068-2-6 covers ±1 mm at 5 to 25 Hz and 50 m/s² at 25 to 150 Hz, which is adequate for most machine-mounted panels but not for direct engine-mount without additional damping.","metaTitle":"Siemens 5SY8306-7 SENTRON MCB, 3P C-Curve, 50 kA IEC","metaDescription":"Siemens 5SY8306-7 SENTRON miniature circuit breaker, 3-pole C-curve, 50 kA breaking capacity per IEC 60947-2, 15 kA DC. Active production, quoted to order. Request RFQ.","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":"5SY8306-7","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, 3P, C6","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":"C","according to IEC 60947-2 rated value":"50 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":"1.6 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$106.68","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f4e552ecf4bc7ad7b86885a837e9638f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=56622&mlfb=5SY8306-7"},"ai":{"faq":[{"question":"What compliance documentation does Siemens provide for 5SY8306-7?","answer":"The breaker is certified to IEC/EN 60947-2 and UL 1077. It is halogen-free and silicon-free, which supports RoHS and REACH compliance declarations from the manufacturer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY8306-7","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/5SY8306-7 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}}