{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY6240-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY6240-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SY6240-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY6240-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY6240-7CC, 2-pole miniature circuit breaker, 40 A rated, C characteristic, 6 kA per EN 60898, 36 mm wide, 76 mm deep.","salesMarkdown":"## What it is and what it does The Siemens SENTRON 5SY6240-7CC is a 2-pole miniature circuit breaker (MCB) with a C tripping characteristic, rated 40 A at 35 °C ambient and 6 kA breaking capacity per EN 60898. It's designed for AC circuits at 50/60 Hz, overvoltage category III, pollution degree 3 — standard for industrial control panels and distribution boards. The C-curve means it trips between 5 and 10 times rated current, so it handles motor inrush and transformer energization without nuisance trips on a lighting or general-purpose load. ## What the ratings mean for fit At 36 mm wide (2 modular width units) and 76 mm deep (70 mm installation depth), it snaps onto a standard DIN rail via the quick assembly system and can be mounted in any position. The combined terminal top and bottom accepts conductors for panel wiring. IP20 with connected conductors means it's protected against finger contact once wired — fine inside a closed enclosure, not for wet locations. The 40 A rating derates with ambient temperature: 37.6 A at 40 °C, 36.36 A at 45 °C, 35.04 A at 50 °C, 33.68 A at 55 °C. If your panel runs hot, size the upstream protection for the derated value, not the 35 °C number. Energy limitation class 3 means it limits let-through energy well — good for downstream equipment protection. Halogen-free and silicon-free construction matters for environments where outgassing can contaminate optics or contacts — semiconductor fabs, medical device assembly, or clean-room adjacent panels. Sealable design allows the installer to lock the toggle position with a padlock for lockout/tagout.","metaTitle":"Siemens 5SY6240-7CC SENTRON MCB, 40A C-Curve 2-Pole, 6kA","metaDescription":"Siemens SENTRON 5SY6240-7CC miniature circuit breaker, 40A rated, C tripping characteristic, 2-pole, 6kA breaking capacity per EN 60898. Active production. Sourced 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":"5SY6240-7CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 6kA, 2-pole, C, 40 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"2P","Number Of Poles":"2","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"40 A","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","at 35 °C rated value":"40 A","at 40 °C rated value":"37.6 A","at 45 °C rated value":"36.36 A","at 50 °C rated value":"35.04 A","at 55 °C rated value":"33.68 A","Energy Limitation Class":"3","according to EN 61346-2":"F","Combined Terminal Bottom":"Yes","according to IEC 81346-2":"F","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"2","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"C","according to EN 60898 rated value":"6 kA","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","Type Of Voltage Of The Operating Voltage":"AC","Value Range Of The Supply Voltage Frequency":"50/60 Hz","operating voltage at DC rated value maximum":"72 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","at AC according to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","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":"3.5 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/38cbf94330633791065581975a70b70f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=58731&mlfb=5SY6240-7CC"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SY6240-7CC?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit a request; availability and current pricing are confirmed at quote time."},{"question":"What is 5SY6240-7CC's depth and width?","answer":"Depth is 76 mm (70 mm installation depth), width is 36 mm (2 modular width units). It fits a standard DIN-rail panel footprint."},{"question":"What compliance documentation does this brand provide for 5SY6240-7CC?","answer":"The SENTRON series carries EN 60898 certification for the 6 kA breaking capacity, and the part is rated for overvoltage category III and pollution degree 3 per IEC standards. Halogen-free and silicon-free construction is documented. Specific RoHS/REACH/UL declarations are available from the manufacturer's documentation portal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY6240-7CC","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/5SY6240-7CC 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}}