{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ4118-8HG41","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ4118-8HG41","canonicalUrl":"https://aoctrl.com/siemens/5SJ4118-8HG41","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ4118-8HG41","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ4 series, miniature circuit breaker, 1-pole, 15 A AC rated, 18 mm width, 70 mm depth, DIN-rail mount, current lifecycle.","salesMarkdown":"The Siemens 5SJ4118-8HG41 is a SENTRON 5SJ4 miniature circuit breaker, single-pole, rated 15 A at AC (cites:). The 70 mm installation depth (cites:,) fits standard distribution boards without gland-plate clearance issues. ## Current derating and temperature range Above 40 °C it derates: 14.6 A at 45 °C, 14.1 A at 50 °C, 13.6 A at 55 °C, and 13.2 A at 60 °C (cites:,). The DC rating maxes at 60 V (cites:).","metaTitle":"Siemens 5SJ4118-8HG41 SENTRON MCB, 1P 15A, 18mm wide","metaDescription":"Siemens 5SJ4118-8HG41 SENTRON miniature circuit breaker, 1-pole, 15 A rated current, 18 mm width, DIN rail mount, 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":"110 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":"15 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":"15 A","at 40 °C rated value":"15 A","at 45 °C rated value":"14.6 A","at 50 °C rated value":"14.1 A","at 55 °C rated value":"13.6 A","at 60 °C rated value":"13.2 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":"D","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 (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":"1.8 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$34.29","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e933b8e66aeb75046630c4946d941894.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=170820&mlfb=5SJ4118-8HG41","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SJ4118-8HG41/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SJ4118-8HG41?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the closest functional second-source to 5SJ4118-8HG41?","answer":"The 5SY4113-7CV is a similar SENTRON miniature circuit breaker but with a different current rating and trip characteristic. It shares the same 1-pole, 18 mm wide DIN-rail form factor, so it can drop into the same panel footprint, but verify the rating and curve match your application before substituting."},{"question":"What compliance documentation does 5SJ4118-8HG41 carry?","answer":"The part is halogen-free and silicon-free (cites:,). It is designed to EN 61346-2 and IEC 81346-2 function codes (cites:,). For specific RoHS, REACH, UL, or IEC certificates, request the manufacturer's declaration at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ4118-8HG41","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/5SJ4118-8HG41 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}}