{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6340-8CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6340-8CC","canonicalUrl":"https://aoctrl.com/siemens/5SL6340-8CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6340-8CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON, Miniature circuit breaker, 5SL6340-8CC, 3-pole, D-curve, 40 A, 400 V AC, 6 kA.","salesMarkdown":"The Siemens 5SL6340-8CC is a SENTRON 3-pole miniature circuit breaker with a D tripping characteristic, rated 40 A at 400 V AC and a breaking capacity of 6 kA per EN 60898. At 40 A and 3 poles, it covers a 3-phase motor circuit or a distribution subfeed where the upstream breaker is already coordinated. At 40 °C it derates to 37.72 A, at 45 °C to 36.53 A, at 50 °C to 35.3 A, and at 55 °C to 34.02 A. If the panel runs warm — say, a crowded enclosure with drives — the 40 A frame may need to be bumped to the next size up to stay within the thermal curve. ## Mechanical fit and environment The operating voltage is AC only, 50/60 Hz, with a maximum of 440 V for multi-phase operation. DC rating is limited to 72 V maximum, so it's not a DC distribution breaker. The product designation follows EN 61346-2 and IEC 81346-2 as function letter F.","metaTitle":"Siemens 5SL6340-8CC SENTRON MCB, 3P D 40A, 6kA","metaDescription":"Siemens 5SL6340-8CC SENTRON 3-pole miniature circuit breaker, D-curve, 40 A rated at 400 V AC, 6 kA breaking capacity per EN 60898. Current production. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Width":"54 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"3P","Number Of Poles":"3","lifecycle_stage":"current","Mounting Position":"any","at AC rated value":"40 A","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","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","according to EN 61346-2":"F","according to IEC 81346-2":"F","Suitability For Operation":"Residential buildings/infrastructure","at DC rated value maximum":"72 V","Number Of Modular Width Units":"3","Tripping Characteristic Class":"D","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"6 kA","Type Of Voltage Of The Operating Voltage":"AC","with multi-phase operation at AC maximum":"440 V","Value Range Of The Supply Voltage Frequency":"50/60 Hz","with multi-phase operation at AC rated value":"440 V","vibration resistance according to IEC 60068-2-6":"50 m/s² at 25 to 150 Hz","Product Extension Installable Supplementary Devices":"Yes","power loss [W] for rated value of the current at AC in hot operating state per pole":"4.8 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/670a0d17f6980c5a4837838fab992ced.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=345019&mlfb=5SL6340-8CC","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL6340-8CC/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SL6340-8CC and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."},{"question":"What is 5SL6340-8CC's listed depth?","answer":"The depth is 76 mm, with an installation depth of 70 mm."},{"question":"What is 5SL6340-8CC's listed width?","answer":"The width is 54 mm, which corresponds to 3 modular width units on a DIN rail."},{"question":"Will 5SL6340-8CC drop into a panel specified around 5SL4363-7 without rewiring?","answer":"Both are 3-pole SENTRON MCBs on the same DIN-rail footprint, so the mechanical fit is the same. The key difference is the tripping curve — 5SL6340-8CC is D-curve (high inrush), while 5SL4363-7 is a different characteristic. Verify the curve matches the load before swapping; the wiring and busbar positions are identical."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6340-8CC","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/5SL6340-8CC 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}}