{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4520-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4520-6","canonicalUrl":"https://aoctrl.com/siemens/5SL4520-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4520-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4520-6 miniature circuit breaker, 1P+N, B characteristic, 20 A rated current, 230 V AC, 10 kA breaking capacity per EN 60898 and IEC 60947-2.","salesMarkdown":"Breaking capacity is 10 kA per both EN 60898 and IEC 60947-2, which means it can safely interrupt a fault current up to 10,000 A without welding its contacts or rupturing the housing. That covers the vast majority of domestic and small commercial service-entrance fault levels across Europe and markets adopting IEC standards. The 1P+N pole configuration switches the line conductor and switches the neutral — the neutral is not protected, but it is disconnected when the breaker trips, which is the standard arrangement for single-phase final subcircuits in many territories. ## Panel fit and mechanical details The 90 mm height is standard for the SENTRON 5SL family, so it aligns with busbar systems and downstream accessories like shunt trips or auxiliary switches. B-curve tripping (per EN 60898) means the magnetic trip operates between 3 and 5 times rated current — so for a 20 A breaker, instantaneous trip occurs between 60 A and 100 A. That is a good fit for resistive and lighting loads with low inrush; it is not the right choice for motor circuits or transformers where a C or D curve would avoid nuisance tripping on starting current. Power loss is 2.5 W per pole in hot operating state at rated current. In a multi-breaker panel, that heat adds up — factor it into your enclosure thermal budget if you are packing 20+ breakers in a small box.","metaTitle":"Siemens 5SL4520-6 SENTRON MCB, 1P+N, 20 A, B Curve, 10 kA","metaDescription":"Siemens SENTRON 5SL4520-6 miniature circuit breaker, 230 V AC, 20 A, B characteristic, 10 kA breaking capacity per EN 60898. 1P+N, 2 MW, active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","title":"5SL4520-6","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 230 V 10kA, 1+N-pole, B, 20 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P+N","Number Of Poles":"2","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 connected conductors","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":"2","Tripping Characteristic Class":"B","supply voltage at AC rated value":"230 V","according to EN 60898 rated value":"10 kA","according to IEC 60947-2 rated value":"10 kA","Type Of Voltage Of The Operating Voltage":"AC","Value Range Of The Supply Voltage Frequency":"50/60 Hz","with single-phase operation at AC rated value":"250 V","Mechanical Service Life (Operating 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":"2.5 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f85ffff0bcbdedee6c573e435474e89b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=106814&mlfb=5SL4520-6"},"ai":{"faq":[{"question":"Will 5SL4520-6 drop into a panel specified around 5SL4363-7?","answer":"No — the 5SL4363-7 is a 3-pole (3P) breaker with 54 mm width, while the 5SL4520-6 is 1P+N at 36 mm width. The DIN-rail mounting is the same, but the pole count, width, and wiring arrangement are different. They are not drop-in interchangeable without panel rewiring."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4520-6","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/5SL4520-6 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}}