{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ4140-6HG40","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ4140-6HG40","canonicalUrl":"https://aoctrl.com/siemens/5SJ4140-6HG40","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ4140-6HG40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ4 series miniature circuit breaker, 1-pole, 40 A rated, DIN-rail mount, 18 mm width, IP20.","salesMarkdown":"It occupies a single modular width of 18 mm, fitting tightly into a crowded panel without wasting rail space. Rated current holds at 40 A up to 40 °C ambient; at 60 °C it derates to 35.2 A — a useful curve to check if the breaker sits near heat sources inside the enclosure. Snaps onto a standard mounting rail in any position. Depth is 70 mm, so it clears most shallow enclosures; the 90 mm height and 18 mm width leave room for wiring ducts alongside. IP20 with connected conductors; IP40 in the handle range. Vibration resistance is 50 m/s² at 25 to 150 Hz and 60 m/s² at 35 Hz (4 sec) — the spectrum doesn't lie, and this breaker holds up under moderate machine vibration without nuisance trips.","metaTitle":"Siemens 5SJ4140-6HG40 SENTRON MCB, 1P 40A, DIN Rail","metaDescription":"Siemens SENTRON 5SJ4140-6HG40 miniature circuit breaker, 1-pole 40 A, DIN rail mount, IP20. Current lifecycle. 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":"70 mm","Width":"18 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","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":"40 A","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","at 30 °C rated value":"40 A","at 40 °C rated value":"40 A","at 45 °C rated value":"38.8 A","at 50 °C rated value":"37.6 A","at 55 °C rated value":"36.3 A","at 60 °C rated value":"35.2 A","Tunnel Terminals Bottom":"No","according to EN 61346-2":"F","Combined Terminal Bottom":"Yes","according to IEC 81346-2":"F","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":"B","supply voltage at AC rated value":"400 V","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)","Type Of Voltage Of The Operating Voltage":"AC/DC","insulation voltage (Ui) at AC rated value":"440 V","Value Range Of The Supply Voltage Frequency":"50/60 Hz","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 (Switching 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":"4.8 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$76.57","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=6453&mlfb=5SJ4140-6HG40","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SJ4140-6HG40/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 5SJ4140-6HG40?","answer":"The 5SL4363-7 is a 1-pole 40 A MCB from the same SENTRON family, but it uses a different trip characteristic (B-curve vs C-curve) and may have a slightly different depth. Verify the curve and panel clearance before substituting."},{"question":"Will 5SJ4140-6HG40 drop into a panel specified around 5SL4363-7 without rewiring?","answer":"Both are 1-pole 40 A MCBs on 18 mm width, so the footprint matches. The depth is the same at 70 mm. Trip curve differs — 5SJ4140-6HG40 is C-curve, 5SL4363-7 is B-curve — so check coordination with downstream loads."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ4140-6HG40","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/5SJ4140-6HG40 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}