{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4108-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4108-8","canonicalUrl":"https://aoctrl.com/siemens/5SL4108-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4108-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4 series, miniature circuit breaker, 1-pole, D tripping characteristic, 8 A rated current, 10 kA breaking capacity per EN 60898 and IEC 60947-2, 400 V AC, 18 mm width.","salesMarkdown":"The Siemens 5SL4108-8 is a 1-pole SENTRON miniature circuit breaker with a D tripping characteristic, rated 8 A at 400 V AC. The 10 kA breaking capacity (per EN 60898 and IEC 60947-2) tells you it can safely interrupt a fault current up to that level without welding contacts or cascading upstream; that's the standard for residential and light commercial distribution boards in most European and Asian installations. The single-pole format (1P) switches the line conductor only, so it's used in single-phase branch circuits or as a phase-level protector in multi-pole assemblies. ## Deployment context The manufacturer lists suitability for residential buildings and infrastructure, which aligns with the 10 kA SCCR and 400/230 V network voltages common in those environments. Halogen-free and silicon-free construction, rated for ambient temperatures from -40 °C to +75 °C with up to 95% humidity at +55 °C. Sealable design allows lockout/tagout for maintenance isolation.","metaTitle":"Siemens 5SL4108-8 SENTRON MCB, 1P D 8A 10kA","metaDescription":"Siemens 5SL4108-8 SENTRON miniature circuit breaker, 1-pole, D-curve, 8 A, 10 kA per IEC/EN 60898. Current lifecycle stage. Sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","title":"5SL4108-8","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"50 Hz","description":"Miniature circuit breaker 230/400 V 10kA, 1-pole, D, 8A","Halogen-Free":"Yes","Silicon-Free":"Yes","Number of poles":"1","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Product designation":"Miniature circuit breaker","Protection class IP":"IP20, with connected conductors","Overvoltage category":"3","Design of the product":"5SL miniature circuit breakers","Energy limiting class":"3","Number of width units":"1","Number of poles / Note":"1P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","circuit-breaker / Design":"5SL4","Suitability for operation":"Residential buildings/infrastructure","Current / at AC / rated value":"8 A","Tripping characteristic class":"D","at DC / rated value / maximum":"60 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","Influence of the surrounding temperature":"+55 °C, max. 95% humidity","with multi-phase operation / at AC / maximum":"440 V","Product function / neutral conductor switching":"No","with multi-phase operation / at AC / rated value":"440 V","with single-phase operation / at AC / rated value":"250 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/b740b0085421af97c0af69348f11467c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=103730&mlfb=5SL4108-8"},"ai":{"faq":[{"question":"Where can I buy 5SL4108-8 and how is it quoted?","answer":"The 5SL4108-8 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the breaking capacity of 5SL4108-8?","answer":"The 5SL4108-8 has a 10 kA breaking capacity per both EN 60898 and IEC 60947-2, which is the standard rating for residential and light commercial distribution boards."},{"question":"What does the D-curve mean on this MCB?","answer":"The D tripping characteristic allows magnetic trips at 10–20× the 8 A rated current, making it suitable for motor, transformer, or lighting ballast circuits where startup inrush would nuisance-trip a B or C curve breaker."},{"question":"Will 5SL4108-8 fit a standard DIN-rail panel?","answer":"Yes, at 18 mm width (1 modular unit) and 76 mm depth, it snaps onto standard DIN rail in any mounting position and fits flush in distribution boards with 70 mm installation depth."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4108-8","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/5SL4108-8 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}}