{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ4115-7HG42","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ4115-7HG42","canonicalUrl":"https://aoctrl.com/siemens/5SJ4115-7HG42","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ4115-7HG42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ4 series miniature circuit breaker, order code 5SJ4115-7HG42, 1-pole, 1.6 A rated current, C tripping characteristic, 18 mm width.","salesMarkdown":"## What it is and what it does The Siemens SENTRON 5SJ4115-7HG42 is a 1-pole miniature circuit breaker (MCB) rated 1.6 A at 30 °C with a C tripping characteristic. It occupies a single 18 mm modular width on standard DIN rail and is designed for branch-circuit protection in industrial control panels and mechanical engineering applications. The C characteristic means it trips between 5 and 10 times rated current, so it handles moderate inrush from small motors or transformers without nuisance tripping, while still clearing short circuits fast enough for cable protection. ## Key ratings and what they mean for fit Rated current derates with ambient temperature: at 30 °C and 40 °C it holds 1.6 A, at 45 °C and 50 °C it drops to 1.5 A, at 55 °C to 1.4 A, and at 60 °C to 1.3 A. If the panel ambient runs above 40 °C, size up one frame to keep the load within the thermal curve. DC rating is 60 V maximum. Overvoltage category 3 and pollution degree 3 suit fixed-installation distribution boards. IP20 with conductors connected, IP40 in the handle area. That's fine for enclosed panels; not rated for washdown or outdoor exposure without an enclosure. ## Mounting and wiring Supply feed can enter from either top or bottom — no polarity restriction. Sealable for tamper-proof installations. Halogen-free and silicon-free construction meets clean-room and low-smoke requirements.","metaTitle":"Siemens SENTRON 5SJ4115-7HG42 MCB, 1.6 A C-Char, 1-pole","metaDescription":"Siemens SENTRON 5SJ4115-7HG42 miniature circuit breaker, 1.6 A rated current at 30 °C, C characteristic, 1-pole, 18 mm width, IP20. Active production. Sourced to order.","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":"5SJ4115-7HG42","Height":"121 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Circuit breaker 10kA, 1-pole, C, 1.6 A according to UL 489-277V","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"1","lifecycle_stage":"current","Fastening Method":"on standard mounting rail","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breakers","at AC / rated value":"1.6 A","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","according to EN 61346-2":"F","at 30 °C / rated value":"1.6 A","at 40 °C / rated value":"1.6 A","at 45 °C / rated value":"1.5 A","at 50 °C / rated value":"1.5 A","at 55 °C / rated value":"1.4 A","at 60 °C / rated value":"1.3 A","Combined Terminal Bottom":"Yes","according to IEC 81346-2":"F","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"1","Tripping Characteristic Class":"C","at DC / rated value / maximum":"60 V","Position / Of Power Supply Cord":"Any","according to EN 60898 / rated value":"10 kA","supply voltage / at AC / rated value":"400 V","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","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$98.98","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/69867ada5a5f1b2f823dfb4f54161593.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=29211&mlfb=5SJ4115-7HG42"},"ai":{"faq":[{"question":"Will the 5SJ4115-7HG42 fit in a panel designed for the 5SL4363-7?","answer":"Both are 1-pole, 18 mm wide MCBs on standard DIN rail, so the physical footprint is the same. However, the electrical ratings differ — verify the load current and tripping characteristic before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ4115-7HG42","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/5SJ4115-7HG42 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}}