{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4306-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4306-8","canonicalUrl":"https://aoctrl.com/siemens/5SL4306-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4306-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON miniature circuit breaker, 5SL4306-8, 3-pole, D-curve, 6 A rated, 400 V AC, 10 kA breaking capacity, 3 MW units.","salesMarkdown":"## What this MCB is and where it fits The Siemens 5SL4306-8 is a 3-pole miniature circuit breaker from the SENTRON family, rated 6 A at 400 V AC with a D tripping characteristic. It delivers 10 kA breaking capacity certified under both EN 60898 and IEC 60947-2, meaning it safely clears faults up to that level without cascading upstream. The D-curve (10–20× In) is sized for loads with high inrush — motor starters, transformers, or discharge lighting — where a B or C curve would nuisance-trip on startup. It occupies 3 modular width units (54 mm) on a DIN rail and accepts any mounting position, so panel layout is flexible. ## Thermal derating — the real continuous current At 30 °C ambient the breaker carries its full 6 A rating. At 40 °C that drops to 5.76 A, at 45 °C to 5.64 A, and at 55 °C to 5.37 A. If the panel runs warm — typical for a densely packed enclosure — the continuous load must be sized against the derated value, not the nameplate 6 A. The 5SL4306-8 is halogen-free and silicon-free, which matters for clean-room or sensitive-environment installations where outgassing can contaminate contacts or optics. ## Lifecycle and sourcing posture This is a current-production part — the lifecycle stage is active. It is sourced and quoted to order through independent distribution; availability and current pricing are confirmed at quote time against an RFQ. For compliance documentation, the SENTRON series carries the usual CE, RoHS, and REACH declarations; specific certificates for UL or IEC can be included with the quote. ## Physical fit and panel integration Width is 54 mm (3 MW), depth 76 mm, height 90 mm, with an installation depth of 70 mm. The IP20 rating applies with connected conductors — standard for a distribution board interior. Overvoltage category III and pollution degree 2 mean it is rated for fixed installation downstream of the main distribution board, not for outdoor or wet locations. Sealable terminals are provided, so the breaker can be locked in the off position for lockout/tagout procedures.","metaTitle":"Siemens 5SL4306-8 SENTRON MCB, 3P D 6A, 400V 10kA","metaDescription":"Siemens 5SL4306-8 SENTRON miniature circuit breaker, 3-pole, D-curve, 6A rated at 400V AC, 10kA breaking capacity per EN 60898 and IEC 60947-2. Active production, sourced to order.","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":"5SL4306-8","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","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breaker","at AC / rated value":"6 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Energy Limitation Class":"3","according to EN 61346-2":"F","at 30 °C / rated value":"6 A","at 40 °C / rated value":"5.76 A","at 45 °C / rated value":"5.64 A","at 55 °C / rated value":"5.37 A","according to IEC 81346-2":"F","Suitability For Operation":"Residential buildings/infrastructure","Number Of Modular Width Units":"3","Tripping Characteristic Class":"D","at DC / rated value / maximum":"72 V","according to EN 60898 / rated value":"10 kA","supply voltage / at AC / rated value":"400 V","according to IEC 60947-2 / rated value":"10 kA","Type Of Voltage / Of The Operating Voltage":"AC","with multi-phase operation / at AC / maximum":"440 V","Value Range / Of The Supply Voltage Frequency":"50/60 Hz","with multi-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/5b69e2d7e81e2f42b38e770e8cc909de.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=448380&mlfb=5SL4306-8"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SL4306-8?","answer":"10 kA under both EN 60898 and IEC 60947-2 at 400 V AC."},{"question":"What loads is the D-curve on 5SL4306-8 intended for?","answer":"The D characteristic (10–20× In) is designed for loads with high inrush current such as motor starters, transformers, or discharge lighting, where a B or C curve would cause nuisance tripping."},{"question":"What is the maximum DC voltage rating for 5SL4306-8?","answer":"72 V DC maximum."},{"question":"Where can I buy 5SL4306-8 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4306-8","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/5SL4306-8 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}}