{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ6140-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ6140-7","canonicalUrl":"https://aoctrl.com/siemens/5SJ6140-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ6140-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SJ6 miniature circuit breaker, 1-pole, C-curve, 40 A, 6 kA breaking capacity per EN 60898, 70 mm depth.","salesMarkdown":"The Siemens 5SJ6140-7 is a 1-pole SENTRON miniature circuit breaker from the 5SJ6 series, rated 40 A with a C tripping characteristic and a 6 kA breaking capacity per EN 60898 and IEC 60947-2. That C-curve means it's built for moderate inrush loads — lighting banks, small motor circuits, control transformers — where the start-up current is a few times the rated value but not the high spike a D-curve handles. The terminals accept solid or stranded copper from 0.75 mm² up to 25 mm² — that's a wide range, so you can land a 2.5 mm² lighting circuit or a 10 mm² feeder without adapters. Rated for ambient temperatures from -20 °C to +45 °C, with periodic tolerance up to +55 °C at 95% humidity. Storage range is wider at -40 °C to +75 °C. Vibration resistance tested to 50 m/s² at 25–150 Hz and 60 m/s² at 10–150 Hz per IEC 60068-2-6, so it holds up on machinery with moderate vibration. Mechanical life is 20 000 switching cycles typical.","metaTitle":"Siemens 5SJ6140-7 SENTRON MCB, 1-Pole C 40A 6kA","metaDescription":"Siemens 5SJ6140-7 SENTRON miniature circuit breaker, 1-pole, C-curve, 40 A, 6 kA breaking capacity per EN 60898. Sourced to order against an RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Solid":"0.75 ... 25 mm²","Sealable":"Yes","Stranded":"0.75 ... 25 mm²","Rated Value":"50 Hz","Halogen-Free":"Yes","Silicon-Free":"Yes","During Storage":"-40 ... +75 °C","Number of poles":"1","Type of voltage":"AC/DC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-20 ... +45 °C","Product designation":"Miniature circuit breakers","Protection class IP":"IP20, with connected conductors","Overvoltage category":"3","Design of the product":"Miniature circuit breaker 5SJ6","Energy limiting class":"3","Number of width units":"1","Number of poles / Note":"1","circuit-breaker / Design":"5SJ6","Current / at AC / rated value":"40 A","Tripping characteristic class":"C","at DC / rated value / maximum":"60 V","acc. to EN 60898 / rated value":"6 kA","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"6 kA","Product feature / Touch protection":"Yes","Supply voltage / at AC / rated value":"240 V","Influence of the surrounding temperature":"Periodically +55°C, max. 95% humidity","Vibration resistance / acc. to IEC 60068-2-6":"50m/s² at 25 to 150Hz and 60m/s² at 10 to 150 Hz","with multi-phase operation / at AC / maximum":"440 V","Mechanical service life (switching cycles) / typical":"20 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=93047&mlfb=5SJ6140-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SJ6140-7/alternatives.json"},"ai":{"faq":[{"question":"What wire sizes does 5SJ6140-7 accept?","answer":"The terminals accept solid and stranded copper from 0.75 mm² up to 25 mm², covering a wide range of final circuit conductors."},{"question":"Where can I buy 5SJ6140-7?","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 breaking capacity of 5SJ6140-7?","answer":"Rated 6 kA per EN 60898 and IEC 60947-2 at 240 V AC, sufficient for most commercial and light industrial final subcircuits."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ6140-7","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/5SJ6140-7 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}}