{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SN6240-8CP","brand":"Siemens","brandSlug":"siemens","productSlug":"5SN6240-8CP","canonicalUrl":"https://aoctrl.com/siemens/5SN6240-8CP","factsUrl":"https://aoctrl.com/api/mcp/products/5SN6240-8CP","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SN series, MCB 5SN, 2-pole, 400 V AC, 50 Hz, 6 kA (EN 60898) / 10 kA (IEC 60947-2), 2 modular width units.","salesMarkdown":"The Siemens 5SN6240-8CP is a SENTRON 5SN series miniature circuit breaker (MCB) — a 2-pole unit rated for 400 V AC at 50 Hz. That dual rating means you can spec it into either standard without swapping parts. Two poles, 72 V DC maximum rating — so it handles DC control circuits up to that voltage, common in 48 V or 60 V DC bus applications. The 440 V AC maximum with multi-phase or single-phase operation means it's fine for 400 V three-phase panels and 230/240 V single-phase branch circuits. The 10 000 mechanical operating cycles typical service life is standard for an MCB in a panel that sees occasional switching; it's not a contactor for daily cycling. Dimensions: 36 mm wide (2 modular width units), 90 mm tall, 76 mm deep with a 70 mm installation depth. That's the standard 2-module footprint — drops into any 35 mm DIN rail enclosure without crowding adjacent breakers. Accepts solid conductors up to 35 mm², so it'll take the incoming feed from a main switch or busbar without needing a reducer.","metaTitle":"Siemens 5SN6240-8CP SENTRON MCB, 2-Pole, 400 V AC, 6/10 kA","metaDescription":"Siemens 5SN6240-8CP SENTRON 5SN series MCB, 2-pole, 400 V AC, 50 Hz, 6 kA (EN 60898) / 10 kA (IEC 60947-2). Current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","title":"5SN6240-8CP","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","description":"MCB 5SN","Number Of Poles":"2","lifecycle_stage":"current","Installation Depth":"70 mm","at DC rated value maximum":"72 V","Number Of Modular Width Units":"2","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"6 kA","Supply Voltage Frequency Rated Value":"50 Hz","according to IEC 60947-2 rated value":"10 kA","with multi-phase operation at AC maximum":"440 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","Connectable Conductor Cross-Section Solid Maximum":"35 mm²","Mechanical Service Life (Operating Cycles) Typical":"10 000","power loss [W] for rated value of the current at AC in hot operating state per pole":"3 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e04f009f62938cac5592a2286f4f8a40.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1647264&mlfb=5SN6240-8CP"},"ai":{"faq":[{"question":"Will 5SN6240-8CP drop into a panel specified around 5SL3205-7MB without rewiring?","answer":"Yes — both share the same 2-module width (36 mm), 76 mm depth, 70 mm installation depth, and DIN-rail mounting. The 5SN6240-8CP carries higher breaking capacities (6 kA / 10 kA vs 4.5 kA) and a 400 V AC rating vs 230 V on the 5SL3205-7MB, so it's a functional upgrade for the same footprint. No rewiring needed if the panel bus and conductors are rated for 400 V."},{"question":"Where can I buy 5SN6240-8CP 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 quote time — no stock count or price is published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SN6240-8CP","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/5SN6240-8CP 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}}