{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ4108-7HG40","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ4108-7HG40","canonicalUrl":"https://aoctrl.com/siemens/5SJ4108-7HG40","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ4108-7HG40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ4 series, 5SJ4108-7HG40, 1-pole miniature circuit breaker, C characteristic, 10 kA (EN 60898) / 15 kA (IEC 60947-2), 400 V AC, 60 V DC, 18 mm wide, DIN rail mount.","salesMarkdown":"It carries a C tripping characteristic, which means it handles moderate inrush currents typical of motor starters and small transformers without nuisance tripping — a solid fit for general-purpose loads in mechanical engineering and industrial environments. Rated breaking capacity is 10 kA per EN 60898 at 400 V AC, and 15 kA per IEC 60947-2 — the higher figure applies when the breaker is installed per the standard's industrial rules, giving you a safety margin for high-fault locations near the main distribution. AC rated voltage is 400 V, DC rated voltage is 60 V, and insulation voltage (Ui) is 440 V AC. The 5SJ4108-7HG40 is halogen-free and silicon-free, which simplifies compliance documentation for RoHS and REACH declarations — a plus for quality and documentation teams tracking material restrictions. ## Installation Notes Vibration resistance is 50 m/s² at 25 to 150 Hz and 60 m/s² at 35 Hz (4-second duration) — adequate for most industrial machinery but not for extreme high-vibration applications like crushers or large reciprocating compressors without additional support. The sealable design allows padlocking in the OFF position for lockout/tagout procedures.","metaTitle":"Siemens 5SJ4108-7HG40 SENTRON MCB, 1P C-curve, 10 kA","metaDescription":"Siemens SENTRON 5SJ4108-7HG40 miniature circuit breaker, 1-pole, C characteristic, 10 kA per EN 60898, 15 kA per IEC 60947-2. Active production, DIN rail mount, 18 mm wide.","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":"5SJ4108-7HG40","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 240 V 14kA, 1-pole, C, 8A, D=70 mm according to UL 489, equal polarity","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P","Number Of Poles":"1","lifecycle_stage":"current","Fastening Method":"on standard mounting rail","Mounting Position":"any","at AC rated value":"400 V","at DC rated value":"60 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breakers","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","Product Function Note":"Terminal tightening torque for Cu, 60/75°C; 3.5Nm/31lb.in","Tunnel Terminals Bottom":"No","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","at DC rated value maximum":"60 V","Neutral Conductor Switching":"No","Number Of Modular Width Units":"1","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"C","according to EN 60898 rated value":"10 kA","Ambient Temperature During Operation":"max. 95% humidity","Supply Voltage Frequency Rated Value":"50 Hz","according to IEC 60947-2 rated value":"15 kA","installation environment regarding EMC":"Suitable for environment B (immunity to interference not applicable)","insulation voltage (Ui) at AC rated value":"440 V","vibration resistance according to IEC 60068-2-6":"±1 mm at 5 to 25 Hz; 50 m/s² at 25 to 150 Hz","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","Tightening Torque With Screw-Type Terminals Maximum":"3.5 N·m","power loss [W] for rated value of the current at AC in hot operating state per pole":"2.6 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$27.94 – $83.20","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/cb8d8e2e4332905287dd8c96479a85e7.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=221062&mlfb=5SJ4108-7HG40"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SJ4108-7HG40?","answer":"Rated breaking capacity is 10 kA according to EN 60898 at 400 V AC, and 15 kA according to IEC 60947-2. The higher IEC figure applies when the breaker is used under the industrial installation rules of that standard."},{"question":"What compliance documentation is available for the 5SJ4108-7HG40?","answer":"The breaker is halogen-free and silicon-free, supporting RoHS and REACH compliance. The SENTRON series carries CE marking and is designed to EN 60898 and IEC 60947-2 standards."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ4108-7HG40","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/5SJ4108-7HG40 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}}