{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6240-7MB","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6240-7MB","canonicalUrl":"https://aoctrl.com/siemens/5SL6240-7MB","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6240-7MB","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6240-7MB miniature circuit breaker, 2-pole, C-curve, 40 A, 400 V AC, 6 kA breaking capacity per EN 60898, 2 MW wide.","salesMarkdown":"The Siemens 5SL6240-7MB is a SENTRON miniature circuit breaker rated 40 A with a C tripping characteristic, 2-pole design, and a 6 kA breaking capacity per EN 60898 at 400 V AC. The C-curve means it handles moderate inrush — typical for motor, lighting, and general distribution circuits — tripping between 5 and 10 times rated current. That 6 kA rating is the fault current it can safely interrupt under the standard; at 400 V three-phase it's suitable for residential and light commercial infrastructure. It occupies 2 modular width units (36 mm) on a DIN rail, so it fits standard panel layout without surprises. Mounts on DIN rail in any position. Depth of 76 mm (70 mm installation depth) leaves clearance for wiring and busbar connections. Sealable design allows tamper-proof sealing for metering or safety circuits. IP20 with connected conductors — standard for enclosed panel use. Rated for 50/60 Hz, 400 V AC multi-phase (440 V max) or 250 V single-phase. DC rated to 72 V max. Power loss 3.3 W per pole at rated current in hot state — factor into thermal budgeting for enclosed panels. Pollution degree 2, overvoltage category III, energy limitation class 3. Accepts supplementary devices (auxiliary contacts, shunt trips, undervoltage releases).","metaTitle":"Siemens 5SL6240-7MB SENTRON MCB, 40 A, C-Curve, 2-Pole, 6 kA","metaDescription":"Siemens SENTRON 5SL6240-7MB miniature circuit breaker, 40 A, C-curve, 2-pole, 6 kA per 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","Energy Limitation Class":"3","Suitability For Operation":"Residential buildings/infrastructure","at DC rated value maximum":"72 V","Number Of Modular Width Units":"2","Tripping Characteristic Class":"C","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","with single-phase operation at AC rated value":"250 V","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","power loss [W] for rated value of the current at AC in hot operating state per pole":"3.3 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=78399&mlfb=5SL6240-7MB","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL6240-7MB/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between 5SL6240-7MB and 5SL4363-7?","answer":"The 5SL4363-7 is a 3-pole (3P) version with a higher 10 kA breaking capacity per both EN 60898 and IEC 60947-2, versus the 5SL6240-7MB's 2-pole (2P) 6 kA rating. The 5SL4363-7 occupies 3 MW (54 mm) instead of 2 MW (36 mm). Both share the same 76 mm depth, 90 mm height, C-curve, and SENTRON platform. If your panel was wired for a 3-pole breaker, dropping in the 2-pole 5SL6240-7MB would leave an empty pole and require rewiring the circuit."},{"question":"How do I get current pricing and availability for 5SL6240-7MB?","answer":"The 5SL6240-7MB is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability confirmation at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6240-7MB","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/5SL6240-7MB 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}}