{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL3220-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL3220-7","canonicalUrl":"https://aoctrl.com/siemens/5SL3220-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SL3220-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL3220-7 miniature circuit breaker, 2-pole, C tripping characteristic, 20 A rated at 400 V AC, 4.5 kA breaking capacity per EN 60898.","salesMarkdown":"## What this MCB is and what it does The Siemens 5SL3220-7 is a 2-pole miniature circuit breaker from the SENTRON family, rated 20 A at 400 V AC with a C tripping characteristic. Per the datasheet, it breaks 4.5 kA under EN 60898 and 5 kA under IEC 60947-2 — the higher figure applies when the breaker is applied in an industrial distribution context where the standard allows it. The C-curve means it trips between 5 and 10 times rated current, so it handles moderate inrush from small motor or lighting loads without nuisance tripping, while still clearing a hard short within the rated interrupting capacity. ## Thermal derating and real-world current The 20 A rating holds at 30 °C ambient. At 40 °C the continuous current drops to 18.79 A; at 45 °C it's 18.6 A; at 55 °C it's 16.8 A. If the panel ambient runs above 30 °C — common in a crowded enclosure — the load current must be derated per these figures or the breaker will nuisance-trip on thermal overload. The mechanical service life is 10 000 switching cycles typical, which is adequate for a distribution board that sees infrequent manual operation. ## Mounting and integration The 5SL3220-7 occupies 2 modular width units (36 mm total) on a DIN rail. Installation depth is 70 mm; the overall depth including the front toggle is 76 mm. It mounts in any position and is rated IP20 with connected conductors — standard for a panelboard MCB, not for wet locations. Pollution degree 2 and overvoltage category III suit it for fixed-installation distribution boards in residential or light commercial infrastructure.","metaTitle":"Siemens 5SL3220-7 SENTRON MCB, 2-pole C 20 A, 400 V AC","metaDescription":"Siemens 5SL3220-7 SENTRON miniature circuit breaker, 2-pole, C-curve, 20 A rated at 400 V AC. Breaking capacity 4.5 kA per EN 60898. Current lifecycle stage. Available to order aga","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":"5SL3220-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 4.5 kA, 2-pole, C, 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":"18.6 A","at 55 °C / rated value":"16.8 A","Suitability For Operation":"Residential buildings/infrastructure","Number Of Modular Width Units":"2","Tripping Characteristic Class":"C","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"4.5 kA","acc. to IEC 60947-2 / rated value":"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=70686&mlfb=5SL3220-7"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SL3220-7?","answer":"4.5 kA per EN 60898 and 5 kA per IEC 60947-2. The higher figure applies when the breaker is applied under the industrial standard."},{"question":"How do I get pricing and availability for the 5SL3220-7?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a request for quote; current pricing and lead time are confirmed at quote time."},{"question":"What compliance documentation is available for the 5SL3220-7?","answer":"The breaker is halogen-free and silicon-free per the manufacturer's material declaration. It carries the SENTRON brand and is designed to EN 60898 and IEC 60947-2. Specific RoHS/REACH/UL documentation should be requested at quote time to confirm the current revision level."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL3220-7","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/5SL3220-7 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}}