{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6240-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6240-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SL6240-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6240-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6240-7CC, miniature circuit breaker, 2-pole, C characteristic, 40 A rated, 400 V AC, 6 kA breaking capacity, IP20.","salesMarkdown":"The C curve means it's designed for moderate inrush loads — think small motor circuits, lighting banks, or general-purpose distribution where the start-up current isn't extreme but exceeds a resistive load's draw. ## Where it fits — panel and environment At 36 mm wide (2 modular units), it occupies two adjacent slots in a consumer unit or sub-distribution board. Mounting position is unrestricted, so you can orient it any way the panel layout demands. ## Thermal derating — the number that matters for real loading At 40 °C it derates to 37.72 A; at 50 °C it drops to 35.3 A. If your panel runs warm — and most enclosed distribution boards do — the actual continuous current you can pull is lower than the label. The C-curve magnetic trip still holds its multiple, but the thermal bimetal element responds to the temperature it sees. Factor this in when sizing for a continuous load near the limit. Halogen-free and silicon-free construction, which matters if the breaker lives in a clean-room or semiconductor-adjacent environment where outgassing can contaminate optics or sensitive surfaces.","metaTitle":"Siemens 5SL6240-7CC SENTRON MCB, 2-pole C-curve 40 A, 6 kA","metaDescription":"Siemens 5SL6240-7CC SENTRON miniature circuit breaker, 2-pole, C characteristic, 40 A rated at 400 V AC, 6 kA breaking capacity. Active production, sourced to order. Request quote.","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","at AC / rated value":"40 A","protection class IP":"IP20, with connected conductors","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":"37.72 A","at 45 °C / rated value":"36.53 A","at 50 °C / rated value":"35.3 A","at 55 °C / rated value":"34.02 A","according to IEC 81346-2":"F","Suitability For Operation":"Residential buildings/infrastructure","Number Of Modular Width Units":"2","Tripping Characteristic Class":"C","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":"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"}},"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=452650&mlfb=5SL6240-7CC","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL6240-7CC/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SL6240-7CC and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at the time of quotation — no stock count or price is published here."},{"question":"Will 5SL6240-7CC drop into a panel designed for 5SL6550-7BB?","answer":"Both are 2-pole SENTRON MCBs on the same DIN-rail footprint, so the mechanical fit is the same. The difference is in the rating: 5SL6240-7CC is a C-curve 40 A, while 5SL6550-7BB is a B-curve 50 A. If the panel was wired for 50 A, dropping in a 40 A breaker means the circuit can't carry the same load — the breaker will trip earlier on sustained current. The physical swap is fine; the electrical substitution depends on the load."},{"question":"What is the depth of 5SL6240-7CC?","answer":"The overall depth is 76 mm; the installation depth (the portion inside the enclosure) is 70 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6240-7CC","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/5SL6240-7CC 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}}