{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL3220-7MB","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL3220-7MB","canonicalUrl":"https://aoctrl.com/siemens/5SL3220-7MB","factsUrl":"https://aoctrl.com/api/mcp/products/5SL3220-7MB","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL3220-7MB miniature circuit breaker, 2-pole, C-curve, 20 A rated, 4.5 kA breaking capacity per EN 60898, 400 V AC.","salesMarkdown":"The Siemens 5SL3220-7MB is a 2-pole miniature circuit breaker from the SENTRON family, rated 20 A with a C-curve trip characteristic. It breaks fault currents up to 4.5 kA per EN 60898 at 400 V AC — the standard that governs overcurrent protection in residential and commercial final circuits. The 2-module-width (36 mm) body snaps onto a DIN rail and occupies 70 mm of enclosure depth, leaving room for gland plates and wiring ducts in a standard distribution board. The 20 A C-curve rating means this breaker holds through moderate inrush — typical for lighting banks, small motor starters, and transformer primaries — and trips magnetically between 5× and 10× rated current. The 4.5 kA breaking capacity at 400 V AC is the maximum prospective fault current it can safely interrupt under EN 60898; for installations where the available fault current exceeds that, step up to the 10 kA variants in the same SENTRON family. The 2-pole design switches both phase and neutral on a single-phase 230 V circuit, or two phases on a 400 V line-to-line load. The 36 mm width (2 modular units) and 76 mm depth fit standard consumer units and sub-distribution boards. Sealable design allows lockout-tagout provisions.","metaTitle":"Siemens 5SL3220-7MB SENTRON MCB, 2P C 20 A, 4.5 kA","metaDescription":"Siemens 5SL3220-7MB SENTRON miniature circuit breaker, 2-pole, C-curve, 20 A, 4.5 kA per EN 60898. Active production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","title":"5SL3220-7MB","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","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":"400 V","according to EN 60898 rated value":"4.5 kA","Type Of Voltage Of The Operating Voltage":"AC","with multi-phase operation at AC maximum":"440 V","Value Range Of The Supply Voltage Frequency":"50/60 Hz","with multi-phase operation at AC rated value":"440 V","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":"1.7 W"}},"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=383098&mlfb=5SL3220-7MB"},"ai":{"faq":[{"question":"Where can I buy 5SL3220-7MB and how is it quoted?","answer":"This part is sourced through independent distribution channels. It is quoted to order against an RFQ; availability and current pricing are confirmed at the time of quotation."},{"question":"What is the difference between 5SL3220-7MB and 5SL4363-7?","answer":"The 5SL4363-7 is a 3-pole, 63 A C-curve breaker with a 10 kA breaking capacity per both EN 60898 and IEC 60947-2, versus the 2-pole, 20 A, 4.5 kA rating of the 5SL3220-7MB. The 5SL4363-7 occupies 3 modular widths (54 mm) compared to 2 (36 mm) and dissipates 5 W per pole versus 1.7 W. They are not drop-in substitutes — the 5SL4363-7 serves higher-current three-phase loads where the 5SL3220-7MB is sized for single-phase or two-phase 20 A circuits."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL3220-7MB","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/5SL3220-7MB 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}}