{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ4108-8HG41","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ4108-8HG41","canonicalUrl":"https://aoctrl.com/siemens/5SJ4108-8HG41","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ4108-8HG41","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ4 series, miniature circuit breaker, 1-pole, D tripping characteristic, 8 A rated, 60 VDC max, IP20/IP40.","salesMarkdown":"Rated 8 A at both 30 °C and 40 °C ambient; derate to 7.8 A at 45 °C, 7.6 A at 50 °C, 7.4 A at 55 °C, and 7.2 A at 60 °C. If your panel runs warm, factor in the thermal curve — at 50 °C you lose 0.4 A of headroom. Rated for AC/DC operation with a maximum DC voltage of 60 V. That covers 48 VDC control circuits common in industrial panels, but not 125 VDC or higher battery banks. IP20 with connected conductors, IP40 in the handle area. That's fine inside a closed panel; if the breaker is exposed to washdown or dust, it needs an additional enclosure. Vibration resistance tested to 50 m/s² at 25–150 Hz and 60 m/s² at 35 Hz — suitable for machine-mounted applications like conveyors or pumps.","metaTitle":"Siemens SENTRON 5SJ4108-8HG41 MCB, 1P, D-curve, 8 A, 60 VDC","metaDescription":"Siemens SENTRON 5SJ4108-8HG41 miniature circuit breaker, 1-pole, D tripping characteristic, rated 8 A at AC/DC, 60 VDC max, active production, DIN-rail mount.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"70 mm","Width":"18 mm","title":"5SJ4108-8HG41","Height":"110 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 240 V 14kA, 1-pole, D, 8A, D=70 mm according to UL 489","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"1","Type Of Voltage":"AC/DC","lifecycle_stage":"current","Fastening Method":"on standard mounting rail","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breakers","acc. to IEC 81346-2":"F","at AC / rated value":"8 A","protection class IP":"IP20, with connected conductors, IP 40 in the handle range","Overvoltage Category":"3","Tunnel Terminals Top":"No","Vibration Resistance":"50 m/s² at 25 to 150Hz and 60m/s² at 35Hz (4sec)","Combined Terminal Top":"Yes","Design Of The Product":"Miniature circuit-breaker 5SJ4","Number Of Poles / Note":"1P","acc. to DIN EN 61346-2":"F","Product Function / Note":"Terminal tightening torque for Cu, 60/75°C; 3.5Nm/31lb.in","Tunnel Terminals Bottom":"No","at 30 °C / rated value":"8 A","at 40 °C / rated value":"8 A","at 45 °C / rated value":"7.8 A","at 50 °C / rated value":"7.6 A","at 55 °C / rated value":"7.4 A","at 60 °C / rated value":"7.2 A","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"1","Tripping Characteristic Class":"D","at DC / rated value / maximum":"60 V","acc. to EN 60898 / rated value":"10 kA","Position / Of Power Supply Cord":"Any","acc. to IEC 60947-2 / rated value":"15 kA","Product Feature / Touch Protection":"Yes","supply voltage / at AC / rated value":"400 V","installation environment regarding EMC":"Suitable for environment B (immunity to interference not applicable)","Influence Of The Surrounding Temperature":"max. 95% humidity","insulation voltage / at AC / rated value":"440 V","Product Function / Neutral Conductor Switching":"No","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$36.88 – $87.97","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/bf2ffde4f5b4fcb4b9b2ad2006b324a3.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=433939&mlfb=5SJ4108-8HG41"},"ai":{"faq":[{"question":"What are the key ratings of this MCB?","answer":"1-pole, D tripping characteristic, rated 8 A at AC/DC, maximum DC voltage 60 V. It mounts on a standard DIN rail and occupies 18 mm width (1 MW)."},{"question":"What compliance documentation is available for this part?","answer":"The part is halogen-free and silicon-free, and it is designed to IEC standards (acc. to IEC 81346-2 and DIN EN 61346-2). It carries IP20/IP40 protection and is rated for overvoltage category III and pollution degree 3."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ4108-8HG41","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/5SJ4108-8HG41 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}}