{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4102-8","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4102-8","canonicalUrl":"https://aoctrl.com/siemens/5SL4102-8","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4102-8","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4102-8, 1-pole miniature circuit breaker, D tripping characteristic, 2 A rated current, 10 kA breaking capacity per EN 60898 / IEC 60947-2.","salesMarkdown":"## 1-pole D-curve MCB, 2 A, 10 kA The Siemens 5SL4102-8 is a SENTRON miniature circuit breaker — 1 pole, D characteristic, rated 2 A at 230/400 V AC. Rated voltage is 250 V single-phase, 440 V multi-phase. The 2 A rating at 30 °C derates to 1.92 A at 40 °C and 1.79 A at 55 °C — relevant if the breaker sits in a crowded enclosure where ambient climbs. DC rating tops at 72 V. Mounting position is unrestricted; the unit occupies 1 modular width (18 mm) on DIN rail. ## D-curve selectivity and coordination The D characteristic is the key selection parameter here. For a 2 A MCB, the magnetic trip threshold sits at 20–40 A instantaneous. That means it ignores the cold inrush of a small control transformer or a 0.75 kW motor start — the kind of load that would trip a C-curve breaker of the same amp rating. Energy limitation class 3 means it lets through less let-through energy (I²t) than class 1 or 2 breakers, which helps downstream semiconductor protection. IP20 with connected conductors; not rated for washdown.","metaTitle":"Siemens 5SL4102-8 SENTRON MCB, 1P D-curve 2 A, 10 kA","metaDescription":"Siemens 5SL4102-8 SENTRON miniature circuit breaker, 1-pole, D characteristic, 2 A rated, 10 kA breaking capacity per EN 60898. Active production. Sourced to order against RFQ.","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":"5SL4102-8","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 230/400 V 10kA, 1-pole, D, 2A","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":"2 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":"2 A","at 40 °C / rated value":"1.92 A","at 45 °C / rated value":"1.88 A","at 55 °C / rated value":"1.79 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=506628&mlfb=5SL4102-8"},"ai":{"faq":[{"question":"Where can I buy the 5SL4102-8 and get a price?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the difference between the 5SL4102-8 and the 5SL6006-7?","answer":"The 5SL6006-7 is a 6 A B-curve MCB; the 5SL4102-8 is a 2 A D-curve. They share the same SENTRON platform and 1-module footprint, so the 5SL4102-8 drops into a panel wired for the 5SL6006-7 without rewiring — but the amp rating and trip curve are different, so the circuit protection changes. Verify the load current and inrush profile before swapping."},{"question":"What compliance documentation does Siemens provide for the 5SL4102-8?","answer":"The MCB carries IEC 60898 and IEC 60947-2 ratings, overvoltage category III, pollution degree 2. As a SENTRON component it is CE-marked and RoHS-compliant by default. Specific UL/CSA documentation should be confirmed at order — the evidence does not list UL file numbers."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4102-8","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/5SL4102-8 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}}