{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4205-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4205-8","canonicalUrl":"https://aoctrl.com/siemens/5SL4205-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4205-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4205-8 miniature circuit breaker, 2-pole, D tripping characteristic, 0.5 A rated current, 10 kA breaking capacity at 400 V AC.","salesMarkdown":"The Siemens 5SL4205-8 is a 2-pole miniature circuit breaker from the SENTRON series, rated 0.5 A with a D tripping characteristic. It breaks 10 kA at 400 V AC per EN 60898 and IEC 60947-2, making it suitable for protecting high-inrush loads like small motors or transformers in residential and infrastructure panels. ## Tripping curve and load fit The D characteristic means this breaker tolerates short-duration inrush up to 10–14 times rated current before tripping magnetically. At 0.5 A rated, it's a fine-current branch protection; the 10 kA SCCR at 400 V AC ensures it safely clears a fault up to that level without upstream coordination issues in a standard distribution board. Depth is 76 mm, installed depth 70 mm. Mounting position is unrestricted. Current derating applies above 30 °C: 0.47 A at 40 °C, 0.46 A at 45 °C, 0.43 A at 55 °C (–). Halogen-free and silicon-free construction. Sealable for tamper-proof installations. Overvoltage category III, pollution degree 2.","metaTitle":"Siemens 5SL4205-8 SENTRON MCB, 2P, D Curve, 0.5 A, 10 kA","metaDescription":"Siemens SENTRON 5SL4205-8 miniature circuit breaker, 2-pole, D characteristic, 0.5 A rated, 10 kA breaking capacity per EN 60898 / IEC 60947-2. 400 V AC. Active production. Availab","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","title":"5SL4205-8","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 10kA, 2-pole, D, 0.5A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"2P","Number Of Poles":"2","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breaker","acc. to IEC 81346-2":"F","at AC / rated value":"0.5 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","at 30 °C / rated value":"0.5 A","at 40 °C / rated value":"0.47 A","at 45 °C / rated value":"0.46 A","at 55 °C / rated value":"0.43 A","Suitability For Operation":"Residential buildings/infrastructure","Number Of Modular Width Units":"2","Tripping Characteristic Class":"D","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"10 kA","acc. to IEC 60947-2 / rated value":"10 kA","Product Feature / Touch Protection":"Yes","supply voltage / at AC / rated value":"400 V","Type Of Voltage / Of The Operating Voltage":"AC","with multi-phase operation / at AC / maximum":"440 V","Product Component / Neutral Conductor Switching":"No","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/7404ae85aaaa1f58b9c29459ca8938a8.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=89823&mlfb=5SL4205-8"},"ai":{"faq":[{"question":"Where can I buy 5SL4205-8 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for current availability and pricing — confirmed at quote time."},{"question":"What is the closest functional second-source to 5SL4205-8?","answer":"A close functional peer is the 5SL3116-6MB, also a 2-pole miniature circuit breaker with D characteristic, but rated at a different current. The 5SL4205-8 is a 0.5 A unit; verify the load's full-load current before substituting."},{"question":"What is the depth of 5SL4205-8?","answer":"The depth is 76 mm, with an installed depth of 70 mm. Width is 36 mm, height 90 mm."},{"question":"Will 5SL4205-8 drop into a panel specified around 5SL3116-6MB?","answer":"Both are 2-pole, 2-module-width SENTRON breakers with the same DIN-rail footprint and D characteristic. The 5SL4205-8 has a lower rated current (0.5 A vs the 5SL3116-6MB's higher rating). No rewiring needed if the circuit is sized for 0.5 A; check that the load does not exceed the lower rating."},{"question":"What compliance documentation does Siemens provide for 5SL4205-8?","answer":"The part carries approvals per EN 60898 and IEC 60947-2. It is halogen-free and silicon-free. Standard Siemens documentation includes a CE declaration, RoHS and REACH compliance statements, and the product datasheet with environmental data."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4205-8","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/5SL4205-8 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}}