{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL3208-7MB","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL3208-7MB","canonicalUrl":"https://aoctrl.com/siemens/5SL3208-7MB","factsUrl":"https://aoctrl.com/api/mcp/products/5SL3208-7MB","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL3 series, miniature circuit breaker, 2-pole, C-curve, 8 A, 400 V AC, 4.5 kA breaking capacity per EN 60898, 2 width units (36 mm).","salesMarkdown":"The Siemens 5SL3208-7MB is a SENTRON 5SL3 miniature circuit breaker, 2-pole, C-curve, rated 8 A at 400 V AC. The 2-pole form factor (2 width units, 36 mm wide) breaks both phase and neutral on a single-phase 230 V supply, or two phases on a 400 V three-phase system. Note it does not switch the neutral independently (neutral conductor switching: No). ## Termination and environment Terminals accept solid or stranded conductors from 0.75 mm² up to 25 mm², with a tightening torque of 2.5 to 3 N·m. That range covers common building wire sizes from 1.5 mm² lighting circuits up to 6 mm² or 10 mm² feeder tails — no adapter lugs needed for standard panel wiring. That covers unconditioned electrical rooms and outdoor enclosures in most climates, though the 45 °C upper limit means derating applies if the breaker is packed tightly in a high-ambient panel. IP20 protection (with connected conductors) is standard for finger-safe installation inside a closed distribution board — not for wet or dusty locations without an outer enclosure.","metaTitle":"Siemens 5SL3208-7MB SENTRON MCB, 2P C 8A 4.5kA","metaDescription":"Siemens 5SL3208-7MB SENTRON miniature circuit breaker, 2-pole, C-curve, 8 A, 4.5 kA breaking capacity per EN 60898. Active production. Sourced 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","Solid":"0.75 ... 25 mm²","Width":"36 mm","title":"5SL3208-7MB","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 25 mm²","Rated Value":"50 Hz","description":"Miniature circuit breaker 400 V 4.5 kA, 2-pole, C, 8A","Halogen-Free":"Yes","Silicon-Free":"Yes","During Storage":"-40 ... +75 °C","Number of poles":"2","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-25 ... +45 °C","Product designation":"Miniature circuit breaker","Protection class IP":"IP20, with connected conductors","Overvoltage category":"3","Design of the product":"5SL miniature circuit breakers","Number of width units":"2","Number of poles / Note":"2P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","circuit-breaker / Design":"5SL3","Suitability for operation":"Residential buildings/infrastructure","Current / at AC / rated value":"8 A","Tripping characteristic class":"C","acc. to EN 60898 / rated value":"4.5 kA","Product feature / Touch protection":"Yes","Supply voltage / at AC / rated value":"400 V","with multi-phase operation / at AC / maximum":"440 V","Tightening torque / with screw-type terminals":"2.5 ... 3 N·m","Product function / neutral conductor switching":"No","with multi-phase operation / at AC / rated value":"440 V","with single-phase operation / at AC / rated value":"250 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/ef7d46829b03ab950468753a30092661.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=484848&mlfb=5SL3208-7MB"},"ai":{"faq":[{"question":"Where can I buy the 5SL3208-7MB and get a price?","answer":"The 5SL3208-7MB is sourced to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time."},{"question":"What are the key ratings of the 5SL3208-7MB?","answer":"2-pole, C-curve, 8 A rated current at 400 V AC, 4.5 kA breaking capacity per EN 60898. Terminals accept 0.75 to 25 mm² solid or stranded conductors."},{"question":"What is the physical size of the 5SL3208-7MB?","answer":"Width 36 mm (2 width units), height 90 mm, depth 76 mm, installation depth 70 mm. Mounts on DIN rail in any position."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL3208-7MB","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/5SL3208-7MB 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}}