{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7540-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7540-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SY7540-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7540-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON miniature circuit breaker, 5SY7540-7CC, 1P+N, 40 A, C characteristic, 230 V AC, 15 kA IEC 60947-2, 5 kA UL 1077, 2 MW, IP20.","salesMarkdown":"The headline breaking capacity is 15 kA at 230 V AC per IEC 60947-2, which covers most industrial distribution panels downstream of a main breaker; the UL 1077 / CSA C22.2 No. 235 rating of 5 kA is what matters for North American supplementary-protection applications. The 40 A rating suits branch circuits feeding multiple machines or sub-distribution boards. ## Panel integration and environment Vibration resistance per IEC 60068-2-6 and 10 000 mechanical operating cycles give a solid service life for panel builders. ## Electrical characteristics and compliance Rated operational voltage is 230 V AC single-phase, with a maximum of 250 V AC single-phase and a DC rating of 72 V. Frequency is 50/60 Hz. The breaker accepts supplementary devices like auxiliary contacts or shunt trips.","metaTitle":"Siemens 5SY7540-7CC SENTRON MCB, 1P+N, 40A, C-Curve, 15kA","metaDescription":"Siemens SENTRON 5SY7540-7CC miniature circuit breaker, 1P+N, 40 A, C characteristic, 15 kA IEC breaking capacity. UL/CSA 5 kA. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-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":"1P+N","Number Of Poles":"2","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"230 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","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"Yes","Number Of Modular Width Units":"2","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"C","according to IEC 60947-2 rated value":"25 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 single-phase operation at AC rated value":"250 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","supply voltage with single-phase operation at AC rated value":"230 V","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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/a9b7727d9b688ec35a027b96be18b950.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=494911&mlfb=5SY7540-7CC","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY7540-7CC/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SY7540-7CC?","answer":"Submit an RFQ through this listing. The part is sourced and quoted to order through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"Will 5SY7540-7CC drop into a panel specified around 5SY7206-7CC without rewiring?","answer":"Both are 2-module (36 mm wide) SENTRON MCBs with the same DIN-rail footprint and terminal layout, so the 5SY7540-7CC will physically fit and wire into the same panel position as the 5SY7206-7CC. The difference is the rating — 40 A C-curve here versus the 6 A C-curve of the 5SY7206-7CC — so the branch circuit must be sized for 40 A."},{"question":"What compliance documentation does this brand provide for 5SY7540-7CC (RoHS, REACH, UL, IEC)?","answer":"The breaker carries IEC 60947-2 certification and UL 1077 / CSA C22.2 No. 235 listing. It is halogen-free and silicon-free, which implies RoHS/REACH compliance. Full declarations are available from Siemens on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7540-7CC","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/5SY7540-7CC 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}}