{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ4340-8HG41","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ4340-8HG41","canonicalUrl":"https://aoctrl.com/siemens/5SJ4340-8HG41","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ4340-8HG41","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ4340-8HG41, D-curve miniature circuit breaker, 3-pole, 400V AC / 60V DC, 10 kA (EN 60898), 15 kA (IEC 60947-2), 70 mm depth, 54 mm width.","salesMarkdown":"## What this MCB is The 5SJ4340-8HG41: A 3-pole D-curve miniature circuit breaker from the Siemens SENTRON 5SJ4 family, rated 40 A and 400 V AC / 60 V DC. The D characteristic is made for high-inrush loads — motors, transformers, capacitive feeds — without tripping on startup. Current production, no end-of-life notice. We quote this against your BOM line directly; no last-time-buy concerns. Three modular width units (54 mm). Ambient temperature range -40 to 75 °C, 95 % humidity. Sealable cover; IP20 with connected conductors, IP40 at the handle. Halogen-free and silicon-free construction.","metaTitle":"Siemens 5SJ4340-8HG41 SENTRON MCB, D-curve, 3P, 40A","metaDescription":"Active Siemens 5SJ4340-8HG41 SENTRON miniature circuit breaker, D-curve, 3-pole, 40A, 10kA/15kA, 400VAC, 60VDC. IP20/IP40, 70mm depth. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"70 mm","Width":"54 mm","Height":"110 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"3P","Number Of Poles":"3","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":"3","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"D","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","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 (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":"4.5 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$341.24","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=516704&mlfb=5SJ4340-8HG41","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SJ4340-8HG41/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of the 5SJ4340-8HG41?","answer":"70 mm, which matches the installation depth and fits typical enclosure depths."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ4340-8HG41","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/5SJ4340-8HG41 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}}