{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4306-5","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4306-5","canonicalUrl":"https://aoctrl.com/siemens/5SY4306-5","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4306-5","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4306-5 3-pole miniature circuit breaker, 6 A AC, Class A tripping characteristic, 10 kA breaking capacity per EN 60898, 35 kA per IEC 60947-2, DIN rail mount.","salesMarkdown":"## 6 A, Class A — what the ratings mean for the panel The 5SY4306-5 is a 3-pole miniature circuit breaker from the Siemens SENTRON family, rated 6 A at AC. The Class A tripping characteristic means it trips on overload between 2 and 3 times rated current — tighter than a B-curve, so it catches moderate overcurrents faster while still allowing brief inrush from resistive loads like heaters or lighting banks. Breaking capacity is 10 kA per EN 60898 and 35 kA per IEC 60947-2. The 35 kA figure applies when the breaker is installed per the industrial standard — useful for high-fault locations near transformers or large motor banks where the prospective short-circuit current exceeds 10 kA. ## Temperature derating — don't size by the 35 °C number alone The 6 A rating holds at 35 °C ambient. At 40 °C it derates to 5.71 A, at 50 °C to 5.41 A, and at 60 °C to 5.09 A. In a crowded DIN rail enclosure with multiple breakers side by side, the internal ambient can easily hit 50 °C — size the upstream protection for the derated value, not the nameplate. Operating range spans -40 °C to 75 °C, with humidity limits of 95% RH up to 55 °C and 35% RH at 75 °C. The breaker is halogen-free and silicon-free, which matters for clean-room or coated-board environments where outgassing can contaminate contacts. ## DIN rail fit and panel integration Width is 54 mm — three modular units on a standard DIN rail. Depth is 76 mm, installation depth 70 mm. The quick-assembly fastening method snaps onto the rail without tools; mounting position is any orientation. IP20 with connected conductors — the terminals are touch-safe once wired, but the breaker itself is not sealed against dust ingress. Overvoltage category III and pollution degree 3 suit it for fixed installations in industrial panels where transient overvoltages from switching loads are common. ## Sourcing and lifecycle Standards compliance includes IEC/EN 60898-1, IEC/EN 60947-2, and UL1077. The UL1077 listing means it is recognized as a supplementary protector in North American panels, not a branch-circuit rated breaker — confirm the application's UL listing requirement before specifying.","metaTitle":"Siemens 5SY4306-5 3-Pole MCB, 6 A, Class A, 10 kA","metaDescription":"Siemens 5SY4306-5 SENTRON 3-pole MCB, 6 A rated, Class A tripping, 10 kA (EN 60898) / 35 kA (IEC 60947-2) breaking capacity. Current production.","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":"5SY4306-5","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, A, 6A, 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","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","at AC / rated value":"6 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","according to EN 61346-2":"F","at 35 °C / rated value":"6 A","at 40 °C / rated value":"5.71 A","at 45 °C / rated value":"5.56 A","at 50 °C / rated value":"5.41 A","at 55 °C / rated value":"5.25 A","at 60 °C / rated value":"5.09 A","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","Tripping Characteristic Class":"A","Position / Of Power Supply Cord":"Any","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","Value Range / Of The Supply Voltage Frequency":"50/60 Hz","at DC / according to IEC 60947-2 / rated value":"15 kA","with multi-phase operation / at AC / rated value":"440 V","operating voltage / at DC / rated value / maximum":"72 V","vibration resistance / according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","with single-phase operation / at AC / rated value":"440 V","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$64.77","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c751cf9306bc40d2d5322d2229222067.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=489717&mlfb=5SY4306-5"},"ai":{"faq":[{"question":"What compliance documentation does Siemens provide for the 5SY4306-5?","answer":"The breaker is certified to IEC/EN 60898-1, IEC/EN 60947-2, and UL1077. It is halogen-free and silicon-free. Standard Siemens declarations for RoHS and REACH are available with the product documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4306-5","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/5SY4306-5 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}}