{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ4118-7HG42","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ4118-7HG42","canonicalUrl":"https://aoctrl.com/siemens/5SJ4118-7HG42","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ4118-7HG42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ4 miniature circuit breaker, 1-pole, C characteristic, 10 kA (EN 60898) / 15 kA (IEC 60947-2), 400 V AC, 60 V DC, 18 mm width, DIN-rail mount.","salesMarkdown":"The Siemens 5SJ4118-7HG42 is a SENTRON miniature circuit breaker (MCB) from the 5SJ4 family, designed for 1-pole protection with a C tripping characteristic. It breaks fault currents up to 10 kA per EN 60898 and 15 kA per IEC 60947-2 at 400 V AC, making it a standard choice for branch-circuit protection in industrial control panels and distribution boards. At 18 mm wide (1 modular unit), this MCB snaps onto a standard DIN rail and fits any 1-pole slot in a SENTRON or equivalent distribution board. The C-curve (per EN 60898) is the go-to for general-purpose industrial loads — it allows 5–10x rated current for a brief magnetic trip delay, so it won't drop out on a motor start or capacitor bank inrush. The 10 kA breaking capacity under EN 60898 covers most commercial and light industrial installations; the 15 kA rating per IEC 60947-2 gives headroom for higher-fault panels (e.g., near a large transformer).","metaTitle":"Siemens 5SJ4118-7HG42 SENTRON MCB, 1P C-curve, 10 kA","metaDescription":"Siemens 5SJ4118-7HG42 SENTRON miniature circuit breaker, 1-pole, C characteristic, 10 kA per EN 60898, 15 kA per IEC 60947-2, 400 V AC, 60 V DC, 18 mm wide, current lifecycle.","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":"121 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":"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","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":"1.9 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$30.48","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/74e23211a7a05d84388e10b193d99969.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=324659&mlfb=5SJ4118-7HG42","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SJ4118-7HG42/alternatives.json"},"ai":{"faq":[{"question":"What is 5SJ4118-7HG42's listed depth (70 mm) on this component line?","answer":"The listed depth is 70 mm, with an installation depth of 70 mm. Width is 18 mm (1 modular unit), height is 121 mm."},{"question":"What is 5SJ4118-7HG42's listed width (18 mm) on this component line?","answer":"Width is 18 mm, which equals 1 modular unit (1 pole). This is the standard single-pole MCB width for DIN-rail mounting."},{"question":"What compliance documentation does this brand provide for 5SJ4118-7HG42 (RoHS, REACH, UL, IEC)?","answer":"The part is halogen-free and silicon-free. It is designed to EN 60898 (10 kA) and IEC 60947-2 (15 kA). For specific RoHS/REACH/UL declarations, request the manufacturer's compliance certificate with your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ4118-7HG42","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/5SJ4118-7HG42 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}}