{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4210-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4210-8","canonicalUrl":"https://aoctrl.com/siemens/5SL4210-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4210-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4210-8, 2-pole miniature circuit breaker, D tripping characteristic, 10 A rated current, 10 kA breaking capacity at 400 V AC, 2 modular width units.","salesMarkdown":"The Siemens 5SL4210-8 is a 2-pole SENTRON miniature circuit breaker with a D tripping characteristic, rated at 10 A and 10 kA breaking capacity per EN 60898 and IEC 60947-2 at 400 V AC. The D-curve is built for loads with high inrush — motor starters, small transformers, or capacitor banks — where the magnetic trip holds off until roughly 10–20× rated current, avoiding nuisance trips on startup. ## Ratings and thermal derating At 30 °C ambient the breaker carries the full 10 A; at 40 °C it derates to 9.24 A, at 45 °C to 8.8 A, and at 55 °C to 7.96 A. The DC-side rating is 72 V maximum, so this is an AC-primary breaker; for a DC sub-circuit at higher voltage you need a different pole configuration. IP20 with connected conductors — finger-safe once installed, but not protected against dripping water. Sealable — you can lock the toggle position to prevent unauthorised switching.","metaTitle":"Siemens 5SL4210-8 SENTRON MCB, 2P D 10A 10kA, 400V","metaDescription":"Siemens 5SL4210-8 SENTRON 2-pole MCB, D-curve, 10 A, 10 kA at 400 V AC. Active production. Quoted 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":"5SL4210-8","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 10kA, 2-pole, D, 10 A","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","at AC / rated value":"10 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":"10 A","at 40 °C / rated value":"9.24 A","at 45 °C / rated value":"8.8 A","at 55 °C / rated value":"7.96 A","according to IEC 81346-2":"F","Suitability For Operation":"Residential buildings/infrastructure","Number Of Modular Width Units":"2","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","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/f4ab5c3772864a9cd57ddebfe9666c12.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=513100&mlfb=5SL4210-8"},"ai":{"faq":[{"question":"Where can I buy 5SL4210-8 and how do I get a price?","answer":"We source the 5SL4210-8 to order against an RFQ. Submit a request and we will confirm current availability and pricing at quote time."},{"question":"What is the D-curve for on this breaker?","answer":"The D tripping characteristic is designed for loads with high inrush current — motor starters, small transformers, or capacitor banks — where the magnetic trip holds off until roughly 10–20× rated current to avoid nuisance trips on startup."},{"question":"What is the breaking capacity of 5SL4210-8?","answer":"The breaking capacity is 10 kA per both EN 60898 and IEC 60947-2 at 400 V AC."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4210-8","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/5SL4210-8 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}}