{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4204-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4204-8","canonicalUrl":"https://aoctrl.com/siemens/5SL4204-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4204-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON miniature circuit breaker, 5SL4204-8, D-curve, 4 A, 400 V AC, 10 kA breaking capacity per EN 60898 and IEC 60947-2, 2-pole, 2 MW, IP20.","salesMarkdown":"The Siemens 5SL4204-8 is a SENTRON miniature circuit breaker with a D tripping characteristic, rated 4 A at 400 V AC. Its 10 kA breaking capacity is certified under both EN 60898 and IEC 60947-2, so it covers residential and industrial fault-current requirements without needing a separate SCCR check for most panelboards. The 2-pole, 2-module-width (36 mm) body snaps onto a DIN rail in any mounting position, and the IP20 rating applies only with conductors connected — finger-safe in a closed enclosure, not for wet locations. ## D-curve and thermal derating The 4 A rating holds at 30 °C ambient; at 40 °C it derates to 3.79 A, at 45 °C to 3.68 A, and at 55 °C to 3.45 A. ## Panel integration Width is 36 mm (2 modular units), depth 76 mm, installation depth 70 mm. The sealable design allows the panel builder to lock the toggle position after commissioning — useful for preventing unauthorized switching on critical circuits. Power loss per pole is 1.1 W at rated current in hot operating state; for a 2-pole breaker that's 2.2 W total, negligible for thermal budgeting in a standard enclosure.","metaTitle":"Siemens 5SL4204-8 SENTRON MCB, D-Curve 4A 400V 10kA","metaDescription":"Siemens 5SL4204-8 SENTRON miniature circuit breaker, D-curve, 4 A, 400 V AC, 10 kA breaking capacity per EN 60898/IEC 60947-2. Current lifecycle stage. Sourced to order against RFQ","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":"5SL4204-8","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 10kA, 2-pole, D, 4A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"2P","Number Of Poles":"2","lifecycle_stage":"current","Mounting Position":"any","at AC rated value":"4 A","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","at 30 °C rated value":"4 A","at 40 °C rated value":"3.79 A","at 45 °C rated value":"3.68 A","at 55 °C rated value":"3.45 A","Energy Limitation Class":"3","according to EN 61346-2":"F","according to IEC 81346-2":"F","Suitability For Operation":"Residential buildings/infrastructure","at DC rated value maximum":"72 V","Number Of Modular Width Units":"2","Tripping Characteristic Class":"D","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"10 kA","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","Product Extension Installable Supplementary Devices":"Yes","power loss [W] for rated value of the current at AC in hot operating state per pole":"1.1 W"}},"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=520985&mlfb=5SL4204-8"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4204-8","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/5SL4204-8 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}}