{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4306-8CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4306-8CC","canonicalUrl":"https://aoctrl.com/siemens/5SY4306-8CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4306-8CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON, miniature circuit breaker, 5SY4306-8CC, 3-pole, D characteristic, 6 A rated current, 10 kA breaking capacity per EN 60898.","salesMarkdown":"## What the ratings mean for your panel The Siemens 5SY4306-8CC is a SENTRON miniature circuit breaker — 3-pole, D tripping characteristic, rated 6 A at AC. The D curve means it tolerates high inrush currents (typically 10–20× rated), so it's the right choice for motor starters, transformers, or power supplies that pull a heavy surge on energization. The 10 kA breaking capacity per EN 60898 tells you it can safely interrupt a fault current up to that level without welding contacts or cascading upstream — essential for coordination in a distribution board. Under UL 1077 the same part carries a 5 kA interrupting rating, so verify which standard governs your installation. ## Mounting and integration Snaps onto DIN rail via the quick-assembly system; occupies 3 modular width units (54 mm). Depth is 76 mm, installation depth 70 mm — fits standard distribution enclosures without crowding the gland plate. Mounting position is any; IP20 with connected conductors means it's for dry indoor panels only, not washdown areas. Terminal top and bottom are combined (busbar-friendly), and the design is halogen-free and silicon-free — relevant for clean-room or corrosive-environment specs. ## Thermal derating and environment Rated 6 A at 35 °C ambient; at 40 °C it derates to 5.51 A, at 50 °C to 4.97 A, and at 55 °C to 4.69 A. If your panel runs hot (say 50 °C inside), size the load to stay under 5 A per pole. Operating range is -40 °C to 75 °C, with humidity limits: max 95% up to 55 °C, then derating to 35% at 75 °C. Overvoltage category III and pollution degree 3 — suitable for fixed installations downstream of the main distribution board.","metaTitle":"Siemens 5SY4306-8CC SENTRON MCB, 3P D-curve 6A, 10kA","metaDescription":"Siemens 5SY4306-8CC SENTRON miniature circuit breaker, 3-pole, D tripping characteristic, rated 6 A AC, breaking capacity 10 kA per EN 60898. Active production, sourced to order. R","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"54 mm","title":"5SY4306-8CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 10kA, 3-pole, D, 6A","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","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":"6 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","acc. to DIN EN 61346-2":"F","at 35 °C / rated value":"6 A","at 40 °C / rated value":"5.51 A","at 45 °C / rated value":"5.25 A","at 50 °C / rated value":"4.97 A","at 55 °C / rated value":"4.69 A","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"3","Tripping Characteristic Class":"D","acc. to EN 60898 / rated value":"10 kA","Position / Of Power Supply Cord":"Any","Product Feature / Touch Protection":"Yes","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 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 Component / 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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/296ebcd80d189bf680bce27ca21d3c76.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=390818&mlfb=5SY4306-8CC"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY4306-8CC?","answer":"10 kA per EN 60898, and 5 kA per UL 1077 / CSA C22.2 No. 235."},{"question":"Where can I buy 5SY4306-8CC?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability."},{"question":"What is the D tripping characteristic used for?","answer":"The D curve (10–20× In) handles high inrush loads like motor starters, transformers, and power supplies without nuisance tripping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4306-8CC","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/5SY4306-8CC 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}}