{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6140-7YA","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6140-7YA","canonicalUrl":"https://aoctrl.com/siemens/5SL6140-7YA","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6140-7YA","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6140-7YA, miniature circuit breaker, 1-pole, 40 A, C characteristic, 6 kA breaking capacity per EN 60898, 400 V AC.","salesMarkdown":"The C curve means it's built for moderate inrush loads: lighting banks, small transformers, and general-purpose socket outlets where the start-up surge is higher than a resistive load but not motor-grade. At 40 A on a single pole, this is a main incomer for a sub-distribution board or a high-current branch circuit. Snaps onto standard DIN rail — 18 mm width (one modular unit), 90 mm height, 76 mm depth. Terminals accept solid or stranded copper from 0.75 mm² up to 25 mm², tightened to 2.5–3 N·m. That's a wide enough wire range to feed a 40 A circuit with 6 mm² or 10 mm² without adapters. Mounting position is unrestricted, so it fits in vertical or horizontal busbar arrangements. IP20 with the distribution board cover fitted — standard for enclosed panels, not for wet areas. If your installation has a higher fault level (say 10 kA or 16 kA upstream), you'd need a higher-rated MCB or a current-limiting upstream device — but for most final circuits fed from a 63 A or 100 A main switch, 6 kA is adequate. The 10 000 mechanical switching cycles are the mechanical endurance — electrical life under load will be lower, but for a panel that sees a few operations a week, that's decades of service.","metaTitle":"Siemens 5SL6140-7YA SENTRON MCB, 40A 1P C-Curve 6kA","metaDescription":"Siemens 5SL6140-7YA SENTRON miniature circuit breaker, 40 A rated, 1-pole, C characteristic, 6 kA breaking capacity per EN 60898. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 25 mm²","Width":"18 mm","title":"5SL6140-7YA","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 25 mm²","Rated Value":"50 Hz","description":"Miniature circuit breaker 230/400 V 6kA, 1-pole, C, 40 A","Halogen-Free":"Yes","Silicon-Free":"Yes","During Storage":"-40 ... +75 °C","Number of poles":"1","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-25 ... +45 °C","Product designation":"Miniature circuit breaker","Protection class IP":"IP20 with distribution board cover","Overvoltage category":"3","Design of the product":"5SL miniature circuit breakers","Energy limiting class":"3","Number of width units":"1","Number of poles / Note":"1P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","circuit-breaker / Design":"5SL6YA","Suitability for operation":"Residential buildings/infrastructure","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","Product feature / Touch protection":"No","Supply voltage / at AC / rated value":"400 V","with multi-phase operation / at AC / maximum":"400 V","Tightening torque / with screw-type terminals":"2.5 ... 3 N·m","Product function / neutral conductor switching":"No","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=641143&mlfb=5SL6140-7YA"},"ai":{"faq":[{"question":"Where can I buy 5SL6140-7YA?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time."},{"question":"What is the breaking capacity of 5SL6140-7YA?","answer":"6 kA per EN 60898 at 400 V AC — the standard for residential and commercial final circuits."},{"question":"What wire sizes does 5SL6140-7YA accept?","answer":"Solid or stranded copper from 0.75 mm² up to 25 mm², terminated with screw terminals torqued to 2.5–3 N·m."},{"question":"What is the depth of 5SL6140-7YA?","answer":"76 mm overall depth, with 70 mm installation depth behind the panel surface — fits standard distribution boards."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6140-7YA","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/5SL6140-7YA 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}}