{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6240-8CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6240-8CC","canonicalUrl":"https://aoctrl.com/siemens/5SL6240-8CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6240-8CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON miniature circuit breaker, 5SL6240-8CC, 2-pole, D-curve, 40 A, 400 V AC, 6 kA breaking capacity per EN 60898.","salesMarkdown":"## What this MCB does for a 40 A D-curve line The Siemens SENTRON 5SL6240-8CC is a 2-pole miniature circuit breaker rated 40 A with a D tripping characteristic, designed to protect circuits on 400 V AC distribution (50/60 Hz). The 2-pole form factor switches both phase conductors in a single-phase or two-phase system — common in North American split-phase or European dual-phase sub-distribution. ## Sizing and thermal reality for a 40 A D-curve Power loss per pole is 4.8 W in hot operating state at rated current. For a 2-pole breaker in an enclosed panel, that's 9.6 W total dissipation — a real number for thermal coordination when the breaker shares a DIN rail with other heat sources. Mounting position is unrestricted, which simplifies panel layout — the breaker can be installed horizontally or inverted if the gland plate forces it. The 2-module width (36 mm per,) fits standard 18 mm/module DIN-rail spacing; depth of 76 mm and height of 90 mm match the SENTRON 5SL family footprint, so it swaps into an existing 5SL panel without re-drilling the rail or re-routing busbars. ## Panel integration and compliance signals The breaker is sealable, halogen-free and silicon-free — relevant for food-processing, pharmaceutical, or clean-room panels where outgassing or seal integrity matters. IP20 with connected conductors is the expected protection for a DIN-rail device inside a closed enclosure; the terminals are finger-safe only when wired. Supplementary devices (auxiliary contacts, shunt trip, alarm switch) can be snapped onto the right side. The 70 mm installation depth accounts for the device body plus the required wiring space behind the DIN rail — plan for at least that clearance from the back panel to the enclosure door.","metaTitle":"Siemens 5SL6240-8CC SENTRON MCB, 2-Pole D-Curve 40A 400V 6kA","metaDescription":"Siemens SENTRON 5SL6240-8CC miniature circuit breaker, 2-pole D-curve 40 A, 400 V AC, 6 kA breaking capacity (EN 60898). Active production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"2P","Number Of Poles":"2","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Suitability For Operation":"Residential buildings/infrastructure","at DC rated value maximum":"72 V","Number Of Modular Width Units":"2","Tripping Characteristic Class":"D","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"6 kA","Type Of Voltage Of The Operating Voltage":"AC","with multi-phase operation at AC maximum":"440 V","Value Range Of The Supply Voltage Frequency":"50/60 Hz","with multi-phase operation at AC rated value":"440 V","vibration resistance according to IEC 60068-2-6":"50 m/s² at 25 to 150 Hz","Product Extension Installable Supplementary Devices":"Yes","power loss [W] for rated value of the current at AC in hot operating state per pole":"4.8 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1cc4e7bc18558c4c416486f421eebb6a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=436185&mlfb=5SL6240-8CC","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL6240-8CC/alternatives.json"},"ai":{"faq":[{"question":"How do I get pricing and availability for 5SL6240-8CC?","answer":"Pricing and availability are confirmed at quote time against an RFQ. Submit a request through the storefront; the sourcing desk will return current lead time and pricing for your required quantity."},{"question":"Will 5SL6240-8CC drop into a panel spec'd for 5SL4363-7 without rewiring?","answer":"No — the 5SL4363-7 is a 3-pole, 63 A, C-curve breaker with 54 mm width (3 module units) versus the 5SL6240-8CC's 2-pole, 40 A, D-curve at 36 mm width. The pole count, rating, and footprint are different; rewiring and busbar reconfiguration would be required."},{"question":"What is the depth of 5SL6240-8CC?","answer":"The depth is 76 mm. This matches the standard SENTRON 5SL family depth, so it aligns with existing panel layouts and busbar systems."},{"question":"What compliance documentation does Siemens provide for 5SL6240-8CC?","answer":"Siemens provides the standard SENTRON MCB documentation including CE declaration of conformity, RoHS and REACH compliance statements, and IEC/EN 60898-1 test reports. The breaker is designed for residential buildings and infrastructure applications per its suitability listing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6240-8CC","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/5SL6240-8CC 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}}