{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6620-7YA","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6620-7YA","canonicalUrl":"https://aoctrl.com/siemens/5SL6620-7YA","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6620-7YA","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6620-7YA, miniature circuit breaker, 3-pole+N, C-curve, 20 A rated, 400 V AC, 6 kA per EN 60898, 4 MW wide.","salesMarkdown":"The Siemens 5SL6620-7YA is a SENTRON miniature circuit breaker (MCB) with a 3-pole+N (3P+N) design, meaning it switches and protects all three phases plus the neutral conductor in a single 4-module-width (72 mm) package. It is rated 20 A at 400 V AC, 50/60 Hz, with a C-curve trip characteristic — so it holds through brief inrush up to 5–10× rated current (typical for motor starting or capacitive loads) and trips faster on sustained overloads. The breaking capacity is 6 kA according to EN 60898, which tells you it can safely interrupt a fault current up to 6,000 A at 400 V without welding its contacts or rupturing the case. It carries pollution degree 2 (non-condensing, typical of a clean indoor panel) and overvoltage category III (distribution-board level, not sub-circuit). If your panel was laid out for a 3-pole MCB (like the 5SL4363-7), you'll need an extra 18 mm (1 MW) of DIN-rail space to accommodate the 4-MW width of this 3P+N unit. The higher 10 kA breaking capacity of the 5SL4363-7 may also matter if your fault level is above 6 kA; otherwise the 5SL6620-7YA is a direct functional drop-in for the same 400 V AC, C-curve, 20 A application. The DC rating is 72 V maximum — useful if the same panel also feeds a DC bus, but note the DC breaking capacity is not separately listed; for DC circuits above 72 V, a dedicated DC-rated MCB is needed.","metaTitle":"Siemens 5SL6620-7YA SENTRON MCB, 3P+N, C-curve, 20A, 6kA","metaDescription":"Siemens 5SL6620-7YA SENTRON miniature circuit breaker, 3P+N, 400V AC, C-curve, 20A, 6kA breaking capacity per EN 60898. Active production, quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"72 mm","title":"5SL6620-7YA","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 230/400 V 6kA, 3-pole+N, C, 20 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"3P+N","Number Of Poles":"4","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breaker","protection class IP":"IP20 with distribution board cover","Overvoltage Category":"III","Energy Limitation Class":"3","Suitability For Operation":"Residential buildings/infrastructure","at DC rated value maximum":"72 V","Number Of Modular Width Units":"4","Tripping Characteristic Class":"C","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":"400 V","Value Range Of The Supply Voltage Frequency":"50/60 Hz","with multi-phase operation at AC rated value":"400 V","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/30f37223df89538091043217ac1e42cf.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=641167&mlfb=5SL6620-7YA"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SL6620-7YA?","answer":"6 kA according to EN 60898 at 400 V AC. That is the standard breaking capacity for residential and light commercial distribution boards in most European installations."},{"question":"Where can I buy the 5SL6620-7YA and get a price?","answer":"It is sourced through independent distribution channels. Submit an RFQ — availability and current pricing are confirmed at quote time, quoted to order."},{"question":"What is the difference between the 5SL6620-7YA and the 5SL4363-7?","answer":"The 5SL6620-7YA is a 3P+N (4-pole) MCB with a 6 kA breaking capacity and 4 MW width. The 5SL4363-7 is a 3-pole (3P) MCB with a 10 kA breaking capacity and 3 MW width. Both are C-curve, 20 A, 400 V AC, SENTRON series. The 5SL4363-7 also supports add-on auxiliary/ shunt trip modules; the 5SL6620-7YA does not."},{"question":"Will the 5SL6620-7YA fit in a panel designed for the 5SL4363-7?","answer":"It will fit the same DIN rail and same 400 V AC, C-curve, 20 A application, but it is 18 mm wider (4 MW vs 3 MW). You need an extra module space in the panel. The breaking capacity is lower (6 kA vs 10 kA), so verify the fault level at the panel."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6620-7YA","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/5SL6620-7YA 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}}