{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL3520-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL3520-7","canonicalUrl":"https://aoctrl.com/siemens/5SL3520-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SL3520-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL3520-7, miniature circuit breaker, 1P+N, C-curve, 20 A, 4.5 kA (EN 60898), 230 V AC, 2 MW, IP20.","salesMarkdown":"It breaks fault currents up to 4.5 kA per EN 60898 and 5 kA per IEC 60947-2 — the EN figure governs residential and light commercial distribution boards; the IEC figure applies when the breaker is used in industrial panel applications where the standard calls for 60947-2 coordination. Installation depth is 70 mm. Mounting position is unrestricted. ## C-curve and real-world load Power loss is 2.2 W per pole in hot operating state at rated current. In a multi-breaker panel, that heat adds up — derating calculations should account for it if the enclosure is sealed and ambient runs above 40 °C. The breaker itself is rated for -40 to 75 °C ambient, so the limit is the panel's internal temperature rise, not the component. IP20 with connected conductors means the terminals are finger-safe only when wired; the busbar entry points are not protected against dust ingress, so the breaker belongs inside an enclosure, not exposed on the plant floor. Energy limitation class 3 means the let-through energy on a fault is limited enough to protect downstream equipment within the breaker's rated breaking capacity.","metaTitle":"Siemens 5SL3520-7 SENTRON MCB, 1P+N C-curve 20 A, 4.5 kA","metaDescription":"Siemens 5SL3520-7 SENTRON miniature circuit breaker, 1P+N, C-curve, 20 A, 4.5 kA per EN 60898, 230 V AC. Active production, sourced to order. Quoted against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","title":"5SL3520-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 230 V 4.5 kA, 1+N-pole, C, 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":"C","supply voltage at AC rated value":"230 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","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":"2.2 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b249c62f0644c1b9899a7b31dd55a2e2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=380052&mlfb=5SL3520-7"},"ai":{"faq":[{"question":"Will 5SL3520-7 drop into a panel specified around 5SL4363-7 without rewiring?","answer":"No, not without panel modification. The 5SL4363-7 is a 3-pole breaker, 54 mm wide (3 MW), while the 5SL3520-7 is 1P+N, 36 mm wide (2 MW). The depth and height are identical (76 mm × 90 mm), but the width difference means the DIN-rail footprint and busbar arrangement are different. Rewiring the neutral conductor and adjusting the busbar length would be required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL3520-7","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/5SL3520-7 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}}