{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6640-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6640-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SL6640-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6640-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6640-7CC miniature circuit breaker, 4-pole (3P+N), 40 A, C-curve, 6 kA breaking capacity per EN 60898, 400 V AC, 72 mm wide, 76 mm deep, 90 mm tall.","salesMarkdown":"## Panel fit and trip curve The Siemens 5SL6640-7CC is a SENTRON miniature circuit breaker (MCB) rated 40 A at 30 °C with a C-curve trip characteristic, meaning it trips at 5–10 times rated current — the standard choice for motor starters, transformers, and general branch circuits where moderate inrush is expected. Rated 400 V AC for multi-phase operation, with a maximum operating voltage of 440 V AC. The DC side is rated 72 V maximum — useful for control circuits but not the primary application. Derating is specified: at 40 °C ambient the breaker carries 37.72 A, at 50 °C it drops to 35.3 A, and at 55 °C it is 34.02 A. If the panel runs warm, size the upstream protection accordingly. Sealable, halogen-free, and silicon-free construction, which matters for clean-room or food-processing zones where off-gassing must be controlled. Vibration resistance rated at 50 m/s² from 25 to 150 Hz per IEC 60068-2-6 — adequate for most fixed installations but not for continuous shock on mobile equipment.","metaTitle":"Siemens 5SL6640-7CC SENTRON MCB, 40A C-Curve 4P 6kA","metaDescription":"Siemens 5SL6640-7CC SENTRON miniature circuit breaker, 40 A rated, C-curve, 4-pole (3P+N), 6 kA breaking capacity per EN 60898, 400 V AC. Active production, sourced to order.","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":"5SL6640-7CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 6kA, 3+N-pole, C, 40 A Circuit breaker 400 V 6kA, 3+N-pole, C, 40 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"4","Type Of Voltage":"AC","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breaker","acc. to IEC 81346-2":"F","at AC / rated value":"40 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Number Of Poles / Note":"3P+N","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","at 30 °C / rated value":"40 A","at 40 °C / rated value":"37.72 A","at 45 °C / rated value":"36.53 A","at 50 °C / rated value":"35.3 A","at 55 °C / rated value":"34.02 A","Suitability For Operation":"Residential buildings/infrastructure","Number Of Modular Width Units":"4","Tripping Characteristic Class":"C","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"6 kA","Product Feature / Touch Protection":"Yes","supply voltage / at AC / rated value":"400 V","Influence Of The Surrounding Temperature":"Periodically +55°C, max. 95% humidity","vibration resistance / acc. to IEC 60068-2-6":"50 m/s² at 25 to 150 Hz","with multi-phase operation / at AC / maximum":"440 V","Product Function / Neutral Conductor Switching":"Yes","with multi-phase operation / at AC / rated value":"440 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/37c0844f4e1ce43b8db4cd3f3ce4ae04.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=449645&mlfb=5SL6640-7CC"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SL6640-7CC?","answer":"The breaking capacity is 6 kA per EN 60898 at 400 V AC. This is sufficient for most residential and light commercial sub-distribution boards."},{"question":"Where can I buy 5SL6640-7CC and how is it quoted?","answer":"The 5SL6640-7CC is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"Will 5SL6640-7CC drop into a panel specified around 5SL6550-7BB without rewiring?","answer":"The 5SL6640-7CC shares the same 4-pole, 72 mm wide form factor as the 5SL6550-7BB, so it fits the same DIN-rail footprint. However, the 5SL6640-7CC is rated 40 A with a C-curve, while the 5SL6550-7BB is 50 A with a B-curve — verify the load and trip coordination before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6640-7CC","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/5SL6640-7CC 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}}