{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4640-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4640-7","canonicalUrl":"https://aoctrl.com/siemens/5SY4640-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4640-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4640-7, miniature circuit breaker, 4-pole (3P+N), C-curve, 40 A, 10 kA per IEC/EN 60898-1, 15 kA per IEC 60947-2.","salesMarkdown":"It breaks faults at 10 kA per IEC/EN 60898-1 and 15 kA per IEC 60947-2, with the same 15 kA rating at DC per IEC 60947-2. The neutral pole is switched, so you get full isolation on all four poles — no exceptions. The 10 kA breaking capacity at 400 V AC is the rating under IEC/EN 60898-1, which covers domestic and light commercial installations; the 15 kA rating under IEC 60947-2 applies in industrial panels where the prospective fault current is higher. That 15 kA also holds at DC, so the same part works in DC distribution up to 60 V or 72 V max. This MCB is specified for mechanical engineering and industry applications. Sealable for lockout/tagout compliance; if it's not locked, it's not safe. The breaker is certified to IEC/EN 60898-1 and IEC/EN 60947-2, plus UL 1077. That dual rating means it qualifies for both IEC-based distribution boards and UL-recognized industrial control panels. Halogen-free and silicon-free — no silicone outgassing to foul contacts in sealed enclosures.","metaTitle":"5SY4640-7 SENTRON MCB 4P C 40A 10kA IEC/EN 60898-1","metaDescription":"Siemens 5SY4640-7 SENTRON miniature circuit breaker, 4-pole (3P+N), C-curve, 40 A, 10 kA per IEC/EN 60898-1, 15 kA per IEC 60947-2. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"72 mm","title":"5SY4640-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60898-1, IEC / EN 60947-2 / UL1077","description":"Miniature circuit breaker 400 V 10kA, 3+N-pole, C, 40A, D=70 mm","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"3P+N","Number Of Poles":"4","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"400 V","at DC rated value":"60 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":"Mechanical engineering / industry","Neutral Conductor Switching":"Yes","Number Of Modular Width Units":"4","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"C","according to EN 60898 rated value":"10 kA","according to IEC 60947-2 rated value":"15 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","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":"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","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":"$72.39","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e9ccd79e57615edad6a2cfffb5e2b7d4.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=307827&mlfb=5SY4640-7"},"ai":{"faq":[{"question":"Where can I buy the 5SY4640-7?","answer":"It is sourced to order against an RFQ through independent distribution. Submit a quote request for current pricing and availability."},{"question":"What is the breaking capacity of 5SY4640-7?","answer":"10 kA per IEC/EN 60898-1 at 400 V AC, 15 kA per IEC 60947-2 at 400 V AC, and 15 kA at DC per IEC 60947-2."},{"question":"Will 5SY4640-7 drop into a panel specified for 5SY6332-7CC?","answer":"Both are 4-module-width SENTRON MCBs on the same DIN-rail footprint, so the mechanical fit is identical. The deciding difference is the rating: the 5SY4640-7 is a 40 A C-curve; the 5SY6332-7CC is a different current/curve combination. Verify the load requirement before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4640-7","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/5SY4640-7 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}}