{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4103-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4103-8","canonicalUrl":"https://aoctrl.com/siemens/5SL4103-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4103-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4103-8 miniature circuit breaker, 1-pole, D tripping characteristic, 3 A rated current, 10 kA breaking capacity per IEC 60898, 1 modular width unit.","salesMarkdown":"The D-curve means the instantaneous trip threshold is 10–20× rated current — sized for loads that draw a heavy start surge, then settle. Rated 400 V AC single-phase, 440 V AC multi-phase, and 72 V DC maximum. That's another SKU that stays in the bin for motor branch circuits and high-surge lighting panels. Rated 3 A at 30 °C ambient. At 40 °C the continuous current drops to 2.84 A; at 45 °C it's 2.76 A; at 55 °C it's 2.59 A. That derating curve is baked into the bimetal element — if the panel runs hot, size up one amp step. The breaker itself survives -40 °C to 75 °C storage and operates up to 55 °C with 95% humidity. Snaps onto standard DIN rail — 18 mm width, one modular width unit. Mounting position any, so it works in vertical or horizontal busbar arrangements. Sealable, halogen-free, silicon-free. Touch protection built in. No neutral conductor switching — this is a single-pole line-side break only.","metaTitle":"Siemens 5SL4103-8 SENTRON MCB, 1P D 3 A, 10 kA","metaDescription":"Siemens 5SL4103-8 SENTRON miniature circuit breaker, 1-pole, D-curve, 3 A, 10 kA breaking capacity per IEC 60898. Active production, sourced to order.","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":"5SL4103-8","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 230/400 V 10kA, 1-pole, D, 3A","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","Degree Of Pollution":"2","Product Designation":"Miniature circuit breaker","acc. to IEC 81346-2":"F","at AC / rated value":"3 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Number Of Poles / Note":"1P","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","at 30 °C / rated value":"3 A","at 40 °C / rated value":"2.84 A","at 45 °C / rated value":"2.76 A","at 55 °C / rated value":"2.59 A","Suitability For Operation":"Residential buildings/infrastructure","Number Of Modular Width Units":"1","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","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 (Operating 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=293922&mlfb=5SL4103-8"},"ai":{"faq":[{"question":"What is 5SL4103-8's breaking capacity?","answer":"10 kA per IEC 60898 and IEC 60947-2 at 400 V AC. That's the short-circuit current it can safely interrupt without welding contacts or rupturing the case."},{"question":"What does the D tripping characteristic mean for this breaker?","answer":"The D-curve trips magnetically at 10–20× rated current (30–60 A for this 3 A unit). It's designed for loads with high inrush — motor starters, transformers, discharge lighting — where a B or C curve would nuisance-trip on startup."},{"question":"Where can I buy 5SL4103-8?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4103-8","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/5SL4103-8 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}}