{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ4105-7HG40","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ4105-7HG40","canonicalUrl":"https://aoctrl.com/siemens/5SJ4105-7HG40","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ4105-7HG40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ4 series, miniature circuit breaker 5SJ4105-7HG40, 1-pole, C characteristic, 10 kA (EN 60898) / 15 kA (IEC 60947-2), 400 VAC, 60 VDC, 1 MW, DIN rail.","salesMarkdown":"Rated breaking capacity is 10 kA per EN 60898 and 15 kA per IEC 60947-2 at 400 VAC, so it handles typical utility-side fault levels in commercial and light industrial installations. Insulation voltage is 440 VAC, giving headroom above the 400 V working voltage. IP20 with conductors connected, IP40 in the handle area — fine for enclosed panels, not for washdown zones. The C-curve (tripping characteristic class C) is the deciding factor for most buyers: it allows short inrush spikes up to 10x rated current without nuisance tripping, making it the go-to for general-purpose motor circuits, fluorescent lighting, and small transformers. If your load is purely resistive (heaters, incandescent) a B-curve would be tighter; if it's high-inrush (large motors, welding gear) a D-curve might be needed. The 10 kA / 15 kA breaking capacity covers the vast majority of 400 VAC commercial installations — only high-fault locations (near large transformers) would require a higher-rated unit. DC rating is 60 V maximum, so it can be used on 48 VDC control circuits but not on typical 110 VDC or 125 VDC battery banks. The 1-pole design switches line only; neutral is not switched.","metaTitle":"Siemens 5SJ4105-7HG40 SENTRON MCB, 1P C-curve, 10kA","metaDescription":"Siemens SENTRON 5SJ4105-7HG40 miniature circuit breaker, 1-pole, C characteristic, 10 kA per EN 60898, 15 kA per IEC 60947-2. 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":"5SJ4105-7HG40","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 240 V 14kA, 1-pole, C, 0.5A, 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":"1.2 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$27.77 – $78.95","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/387cf43a94a9460558a8450a95e06d5f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=184975&mlfb=5SJ4105-7HG40"},"ai":{"faq":[{"question":"What is the closest functional second-source to 5SJ4105-7HG40?","answer":"The Siemens 5SL6006-7 is a similar 1-pole C-curve MCB in the same SENTRON family, but it is a different series (5SL vs 5SJ4). The 5SJ4 series offers a higher breaking capacity (15 kA per IEC 60947-2 vs 10 kA for 5SL) and a wider ambient temperature range (-40 °C to 75 °C vs a narrower range on 5SL). If your application requires the higher fault rating or extended temperature range, the 5SJ4105-7HG40 is the correct fit; for standard commercial panels at 10 kA, the 5SL6006-7 may be a cost-effective alternative. Panel footprint (1 MW, DIN rail) and terminal style are compatible, but verify the sp"},{"question":"What compliance documentation is available for this part?","answer":"As a Siemens SENTRON product, the 5SJ4105-7HG40 carries CE marking for the European market and is designed to EN 60898 and IEC 60947-2 standards. RoHS and REACH compliance documentation is typically available from Siemens upon request. The part is halogen-free and silicon-free, which supports environmental compliance in sensitive installations."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ4105-7HG40","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/5SJ4105-7HG40 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}}