{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4306-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4306-7","canonicalUrl":"https://aoctrl.com/siemens/5SY4306-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4306-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4306-7 miniature circuit breaker, 3-pole, C characteristic, 10 kA (EN 60898-1) / 35 kA (IEC 60947-2) breaking capacity, 400 V AC, 60 V DC.","salesMarkdown":"## Product overview Breaking capacity is 10 kA per EN 60898-1 for general distribution, 35 kA per IEC 60947-2 for industrial installations, and 5 kA per UL 1077 / CSA C22.2 No.235 for North American supplementary protection. At DC (IEC 60947-2) it interrupts 15 kA up to 72 V. The 5SY4306-7 is certified to IEC / EN 60898-1 (domestic-style MCB) and IEC / EN 60947-2 (industrial MCCB standard) as well as UL 1077 / CSA C22.2 No.235 for supplementary protection in North America. This dual rating means it can serve as the main branch breaker in a European panel or as a supplementary protector in a UL 508A industrial control panel — the installer selects the applicable standard based on the end-equipment listing. The 5SY4306-7 is a 3-pole C-curve breaker. It uses the SENTRON quick-assembly system for ganging with other SENTRON devices. Neutral conductor switching is not provided — this is a 3-pole-only device (no switched neutral). For a panel originally specified around the 5SL4363-7, note that the 5SL series is a different mechanical family — the 5SY uses a different terminal arrangement and busbar interface. While both are 3-pole C-curve MCBs, the 5SY4306-7 will not drop into a 5SL panel without rewiring the busbar and checking the terminal pitch. The 5SY is the industrial-grade line with higher interrupting capacity (35 kA vs 10 kA typical for 5SL). ## Environmental and installation Ambient temperature range is -40 °C to 75 °C, with humidity derating above 55 °C: max 95% RH at 55 °C, dropping to 35% RH at 75 °C. The breaker is sealable (e.g., for tamper-proofing in metering applications) and can be padlocked in the OFF position. Energy limitation class 3 means the let-through energy is limited to a level that protects downstream devices under short-circuit conditions — relevant for coordinating with downstream contactors or motor starters in a selective coordination study.","metaTitle":"Siemens 5SY4306-7 SENTRON MCB, 3P C-curve, 10kA IEC, 35kA IE","metaDescription":"Siemens 5SY4306-7 SENTRON miniature circuit breaker, 3-pole, C tripping characteristic, 10 kA per EN 60898-1, 35 kA per IEC 60947-2. Active production, sourced to order against 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":"5SY4306-7","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 10kA, 3-pole, C, 6 A, 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","Energy Limitation Class":"3","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 EN 60898 rated value":"10 kA","according to IEC 60947-2 rated value":"35 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":"$26.67","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c628ef0596cc1889d105aff20152b19f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=149275&mlfb=5SY4306-7"},"ai":{"faq":[{"question":"What is the closest functional alternative to the 5SY4306-7?","answer":"The 5SL4363-7 is a 3-pole C-curve MCB from the same SENTRON family, but it belongs to the 5SL series which has a lower breaking capacity (typically 10 kA) and a different mechanical footprint. The 5SY4306-7 offers 35 kA per IEC 60947-2 and uses the quick-assembly system; the two are not drop-in interchangeable without panel modifications."},{"question":"What compliance documentation is available for the 5SY4306-7?","answer":"The breaker is certified to IEC / EN 60898-1, IEC / EN 60947-2, and UL 1077 / CSA C22.2 No.235. It is halogen-free and silicon-free, which supports RoHS/REACH compliance declarations."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4306-7","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/5SY4306-7 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}}