{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6140-6YA","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6140-6YA","canonicalUrl":"https://aoctrl.com/siemens/5SL6140-6YA","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6140-6YA","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6140-6YA miniature circuit breaker, 1-pole, B-curve, 40 A, 6 kA interrupting capacity per EN 60898, 400 V AC, 1 MW unit.","salesMarkdown":"The Siemens SENTRON 5SL6140-6YA is a 1-pole miniature circuit breaker with a B tripping characteristic, rated 40 A at 30 °C and 400 V AC. The 40 A rating at 30 °C is the headline figure, but the derating curve matters in a warm panel: at 40 °C ambient the breaker is rated 0.96 A (a clear data anomaly — likely a misprint for a different variant; the 45 °C figure of 37.2 A is more plausible for this class). In practice, size the continuous load at no more than 32 A in a 40 °C enclosure to avoid nuisance tripping. The B curve (3–5× In) gives fast magnetic trip for short circuits while passing normal inrush from lighting and control transformers. Occupies 1 modular width unit (18 mm). Mounting position is any. IP20 rating applies with distribution board cover fitted.","metaTitle":"Siemens 5SL6140-6YA SENTRON MCB, 1P B 40A, 6kA","metaDescription":"Siemens 5SL6140-6YA SENTRON miniature circuit breaker, 1-pole, B-curve, 40 A, 6 kA per EN 60898, 400 V AC. Sourced to order against an RFQ through independent distribution.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","title":"5SL6140-6YA","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 230/400 V 6kA, 1-pole, B, 40 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P","Number Of Poles":"1","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breaker","at AC / rated value":"40 A","protection class IP":"IP20 with distribution board cover","Overvoltage Category":"III","Energy Limitation Class":"3","according to EN 61346-2":"F","at 30 °C / rated value":"40 A","at 40 °C / rated value":"0.96 A","at 45 °C / rated value":"37.2 A","according to IEC 81346-2":"F","Suitability For Operation":"Residential buildings/infrastructure","Number Of Modular Width Units":"1","Tripping Characteristic Class":"B","at DC / rated value / maximum":"72 V","according to EN 60898 / rated value":"6 kA","supply voltage / at AC / rated value":"400 V","Type Of Voltage / Of The Operating Voltage":"AC","with multi-phase operation / at AC / maximum":"400 V","with multi-phase operation / at AC / rated value":"400 V","with single-phase operation / at AC / rated value":"250 V","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/0d7ea632b0ba87061cb26e17d8bbc61f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=641142&mlfb=5SL6140-6YA"},"ai":{"faq":[{"question":"Will 5SL6140-6YA drop into a panel that was specified around 5SL6132-6MB without rewiring?","answer":"Yes — both share the same 18 mm width, 76 mm depth, 90 mm height, DIN-rail mounting, and 1-pole form factor. The only difference is the current rating: 40 A vs 32 A. No rewiring needed if the circuit is rated for 40 A."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6140-6YA","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/5SL6140-6YA 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}}