{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL3220-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL3220-6","canonicalUrl":"https://aoctrl.com/siemens/5SL3220-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SL3220-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL3220-6 miniature circuit breaker, 2-pole, B-curve, 20 A, 4.5 kA breaking capacity per IEC/EN 60898, 400 V AC.","salesMarkdown":"The Siemens 5SL3220-6 is a SENTRON miniature circuit breaker — a 2-pole, B-curve device rated 20 A with a 4.5 kA breaking capacity per both EN 60898 and IEC 60947-2. It's designed for residential and infrastructure branch-circuit protection where the fault level stays under that 4.5 kA ceiling at 400 V AC. If you're feeding motor or transformer circuits that see a higher magnetizing surge, you'd want a C or D curve instead; this one is sized for the less aggressive start. ## Thermal derating — the real-world current you can actually run At 40 °C it derates to 18.79 A; at 45 °C to 18.4 A; at 55 °C to 16.8 A. If your panel runs warm — and most do, especially with adjacent breakers — that 20 A nameplate isn't what you can continuously load. Size your downstream circuit for the derated figure at your actual enclosure ambient. ## What the approvals and environmental specs tell you","metaTitle":"Siemens 5SL3220-6 SENTRON MCB, 2P B 20A 4.5kA","metaDescription":"Siemens 5SL3220-6 SENTRON miniature circuit breaker, 2-pole, B-curve, 20 A rated, 4.5 kA breaking capacity per IEC/EN 60898. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","title":"5SL3220-6","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 4.5 kA, 2-pole, B, 20 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"2P","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","acc. to IEC 81346-2":"F","at AC / rated value":"20 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","at 30 °C / rated value":"20 A","at 40 °C / rated value":"18.79 A","at 45 °C / rated value":"18.4 A","at 55 °C / rated value":"16.8 A","Suitability For Operation":"Residential buildings/infrastructure","Number Of Modular Width Units":"2","Tripping Characteristic Class":"B","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"4.5 kA","acc. to IEC 60947-2 / rated value":"4.5 kA","Product Feature / Touch Protection":"Yes","supply voltage / at AC / rated value":"400 V","Type Of Voltage / Of The Operating Voltage":"AC","with multi-phase operation / at AC / maximum":"440 V","Product Component / Neutral Conductor Switching":"No","with multi-phase operation / at AC / rated value":"440 V","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/abe3bd82392c6e5e556af1de51bd959c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=87528&mlfb=5SL3220-6"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SL3220-6?","answer":"The 5SL3220-6 has a 4.5 kA breaking capacity per both EN 60898 and IEC 60947-2 at 400 V AC."},{"question":"What is the closest functional second-source to the 5SL3220-6?","answer":"The 5SL4120-7CC is a 2-pole, 20 A, B-curve MCB from the same SENTRON family, but it carries a 6 kA breaking capacity rather than the 4.5 kA of the 5SL3220-6. It will drop into the same DIN-rail footprint and 2 MW width, but verify the higher fault rating is acceptable for your installation — if your available fault current is under 4.5 kA, the 5SL3220-6 is the correct call."},{"question":"Where can I buy the 5SL3220-6 and how is it quoted?","answer":"The 5SL3220-6 is sourced and quoted to order through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time."},{"question":"What compliance documentation does Siemens provide for the 5SL3220-6?","answer":"The 5SL3220-6 carries ratings per EN 60898 and IEC 60947-2. It is halogen-free and silicon-free, and rated for overvoltage category III and pollution degree 2 — consistent with CE-marked installation material for residential and infrastructure use."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL3220-6","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/5SL3220-6 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}}