{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY5240-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY5240-7","canonicalUrl":"https://aoctrl.com/siemens/5SY5240-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY5240-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY5240-7, 2-pole miniature circuit breaker, C-curve, 10 kA interrupting rating per IEC/EN 60898-2, 400 V AC / 440 V DC, 2 MW, IP20.","salesMarkdown":"## Siemens 5SY5240-7 SENTRON — 2-Pole C-Curve MCB for Universal-Current Panels It also carries a UL1077 listing, making it suitable for supplementary protection in North American panels. This is a current-production part — no lifecycle concerns for new builds or spares. The 10 kA breaking capacity at 400 V AC is the maximum fault current it can safely interrupt; for DC circuits, the same 10 kA applies per EN 60898-2, while the IEC 60947-2 rating pushes to 15 kA for industrial distribution boards. Rated for 400 V AC and 440 V DC with a maximum DC operating voltage of 500 V, it covers both single-phase and multi-phase AC supplies as well as DC bus protection. The 50/60 Hz rating confirms line-frequency compatibility. ## Deployment Context — Panel Integration The 2 MW width — 36 mm — occupies two 18 mm slots; plan your rail fill accordingly. The sealable option allows locking the handle in OFF position for lockout/tagout procedures.","metaTitle":"Siemens 5SY5240-7 SENTRON MCB, 2P C-Curve, 10 kA, 400 V AC","metaDescription":"Siemens 5SY5240-7 SENTRON miniature circuit breaker, 2-pole, C-curve, 10 kA breaking capacity per IEC/EN 60898-2 and UL1077. Active production. Quoted to order.","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","title":"5SY5240-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60898-2, UL1077","description":"Circuit breaker Universal current 440 V DC 400 V AC 10kA, 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":"400 V","at DC rated value":"440 V","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","Energy Limitation Class":"3","Combined Terminal Bottom":"Yes","Suitability For Operation":"universal current","Neutral Conductor Switching":"No","Number Of Modular Width Units":"2","Position Of Power Supply Cord":"AC as required, observe DC polarity","Tripping Characteristic Class":"C","at DC according to EN 60898-2":"10 kA","according to EN 60898 rated value":"10 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/DC","at DC according to IEC 60947-2 rated value":"15 kA","Value Range Of The Supply Voltage Frequency":"50/60 Hz","operating voltage at DC rated value maximum":"500 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","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":"5 000","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/66da6d15d5a2016a869a02c725d8cbc7.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=186647&mlfb=5SY5240-7"},"ai":{"faq":[{"question":"What are the key ratings of 5SY5240-7?","answer":"2-pole, C-curve trip characteristic, 10 kA breaking capacity per IEC/EN 60898-2, rated 400 V AC / 440 V DC, 2 MW width (36 mm), 76 mm depth."},{"question":"Where can I buy 5SY5240-7 and how do I get a price?","answer":"This part is sourced to order through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time."},{"question":"What compliance standards does 5SY5240-7 meet?","answer":"It complies with IEC/EN 60898-2 and UL1077. The design is halogen-free and silicon-free. Pollution degree 3 and overvoltage category III are rated."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY5240-7","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/5SY5240-7 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}}