{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL3340-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL3340-7","canonicalUrl":"https://aoctrl.com/siemens/5SL3340-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SL3340-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL3340-7, 3-pole miniature circuit breaker, 40 A, C-tripping characteristic, 4.5 kA per EN 60898, 5 kA per IEC 60947-2, 3 MW units wide.","salesMarkdown":"The 4.5 kA breaking capacity per EN 60898 and 5 kA per IEC 60947-2 cover most residential and light-commercial panel fault levels; for higher SCCR you'd step to the 5SY series. Derating is already baked in: at 40 °C ambient the breaker carries 38.07 A, at 45 °C it's 36.8 A, and at 55 °C it drops to 34.97 A. If your enclosure runs hot, size the load side accordingly — the 40 A nameplate is only good at 30 °C. For a 3-pole unit that's 9.9 W total — factor that into your enclosure thermal budget when ganging multiple breakers. Mounting position is unrestricted, so you can lay it sideways in a shallow enclosure if needed. Sealable design allows locking in the OFF position for lockout/tagout. Halogen-free and silicon-free construction — no corrosive off-gassing if the breaker faults in a sealed cabinet. ## Compliance and approvals Energy limitation class 3. The breaker is marked per EN 61346-2 and IEC 81346-2 function code F. Suitable for residential buildings and infrastructure.","metaTitle":"5SL3340-7 SENTRON MCB, 40A C-Curve, 3P, 4.5kA EN 60898","metaDescription":"Siemens 5SL3340-7 SENTRON miniature circuit breaker, 40 A rated, C-tripping characteristic, 3-pole, 4.5 kA (EN 60898) / 5 kA (IEC 60947-2). Current production. Sourced to order aga","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"54 mm","title":"5SL3340-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 4.5 kA, 3-pole, C, 40 A","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":"38.07 A","at 45 °C rated value":"36.8 A","at 55 °C rated value":"34.97 A","Energy Limitation Class":"3","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":"C","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"4.5 kA","according to IEC 60947-2 rated value":"5 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","Mechanical Service Life (Switching Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","power loss [W] for rated value of the current at AC in hot operating state per pole":"3.3 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/68309750bd91cccfe9c458f225603103.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=472353&mlfb=5SL3340-7"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SL3340-7?","answer":"4.5 kA per EN 60898 and 5 kA per IEC 60947-2 at 400 V AC."},{"question":"What is 5SL3340-7's listed depth?","answer":"76 mm overall depth; installation depth is 70 mm."},{"question":"Will 5SL3340-7 drop into a panel specified around 5SL3340-7CC without rewiring?","answer":"The 5SL3340-7 and 5SL3340-7CC share the same SENTRON 5SL platform — same 3-MW DIN-rail footprint, same 54 mm width, same 76 mm depth. They are mechanically interchangeable in the panel. The difference is the tripping characteristic: C-curve (5SL3340-7) vs. CC-curve (5SL3340-7CC). Verify the upstream protection coordination before swapping."},{"question":"Where can I buy 5SL3340-7 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL3340-7","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/5SL3340-7 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}}