{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4140-7RC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4140-7RC","canonicalUrl":"https://aoctrl.com/siemens/5SL4140-7RC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4140-7RC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4 series, 5SL4140-7RC miniature circuit breaker, 1-pole, C-curve, 40 A, 10 kA per EN 60898, 240/415 V AC.","salesMarkdown":"The Siemens 5SL4140-7RC is a 1-pole SENTRON miniature circuit breaker rated 40 A with a C-curve trip characteristic and 10 kA breaking capacity per EN 60898. It's built for residential and infrastructure branch circuits — lighting, general-purpose receptacles, and light motor loads that don't need a D-curve's inrush headroom. The single-pole format means it switches only the phase; neutral is not switched through this device. The 40 A rating at 240/415 V AC covers most single-phase subfeeds and lighting circuits in commercial and residential panels. Overvoltage category III confirms it's rated for fixed-installation use downstream of the utility meter. Dimensions are 18 mm wide (1 width unit), 90 mm tall, 76 mm deep with an installation depth of 70 mm — fits any standard distribution board. Wire range accepts 0.75 to 25 mm² solid or stranded copper; torque terminals to 2.5–3 N·m. Sealable, halogen-free, and silicon-free construction suits environments where outgassing or contamination is a concern.","metaTitle":"Siemens 5SL4140-7RC SENTRON MCB, 1P C 40 A, 10 kA","metaDescription":"Siemens 5SL4140-7RC SENTRON miniature circuit breaker, 1-pole, C-curve, 40 A rated, 10 kA breaking capacity per EN 60898. Current lifecycle stage. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 25 mm²","Width":"18 mm","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 25 mm²","Rated Value":"50 Hz","Halogen-Free":"Yes","Silicon-Free":"Yes","Wertebereich":"-25 ... +55 °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":"-40 ... +75 °C","Product designation":"Miniature circuit breaker","Protection class IP":"IP20, with connected conductors","Overvoltage category":"III","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":"5SL4","Suitability for operation":"Residential buildings/infrastructure","Current / at AC / rated value":"40 A","Tripping characteristic class":"C","acc. to EN 60898 / rated value":"10 kA","Product feature / Touch protection":"Yes","Supply voltage / at AC / rated value":"415 V","with multi-phase operation / at AC / maximum":"440 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":"440 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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d26f2f63859bc35ff42bd407efc1c902.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=188837&mlfb=5SL4140-7RC","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL4140-7RC/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SL4140-7RC?","answer":"10 kA rated breaking capacity per EN 60898 at 415 V AC. That's the standard interrupting rating for residential and commercial distribution boards."},{"question":"What wire sizes does the 5SL4140-7RC accept?","answer":"Solid or stranded copper from 0.75 mm² up to 25 mm². Terminals torque to 2.5–3 N·m."},{"question":"Where can I buy the 5SL4140-7RC and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at the time of quote — no stock figures or lead-time numbers on this page."},{"question":"Will the 5SL4140-7RC fit in a panel designed for the 5SL3120-6MB?","answer":"Both are 1-pole SENTRON MCBs on the same 18 mm DIN-rail footprint, so mechanical fit is identical. The difference is electrical: the 5SL4140-7RC is a 40 A C-curve with 10 kA breaking capacity; the 5SL3120-6MB is a different rating and curve. No rewiring needed for the same panel cutout, but verify the circuit's load and fault current requirements against the new breaker's ratings before substitution."},{"question":"What compliance documentation does Siemens provide for the 5SL4140-7RC?","answer":"The breaker carries EN 60898 certification for the 10 kA breaking capacity. It is designed for overvoltage category III installations. For specific RoHS, REACH, or UL documentation, request the manufacturer's declaration of conformity with your RFQ — those documents are not included in this listing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4140-7RC","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/5SL4140-7RC 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}}