{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL3250-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL3250-6","canonicalUrl":"https://aoctrl.com/siemens/5SL3250-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SL3250-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL3 series, 5SL3250-6 miniature circuit breaker, 2-pole, 50 A, B characteristic, 4.5 kA, 400 V AC.","salesMarkdown":"## Panel fit and protection profile The Siemens 5SL3250-6 is a 2-pole SENTRON miniature circuit breaker rated 50 A with a B tripping characteristic, meaning it trips at 3–5× rated current — suited for residential and light commercial loads where inrush is moderate, like lighting circuits or general-purpose outlets. The 4.5 kA breaking capacity per EN 60898 (also rated per IEC 60947-2 at 4.5 kA) handles typical fault levels in building distribution boards; at 400 V AC it covers standard single-phase and split-phase panels. The B curve avoids nuisance trips on resistive loads but will clear fast on a hard short. ## DIN-rail footprint and wiring Occupies 2 width units (36 mm) on a DIN rail, with a depth of 76 mm and an installation depth of 70 mm — standard for the 5SL3 family. The screw terminals accept solid or stranded conductors from 0.75 to 25 mm², with a tightening torque of 2.5 to 3 N·m. Halogen-free and silicon-free construction, sealable for tamper-proofing. Overvoltage category 3, energy limiting class 3. Suitable for residential buildings and infrastructure applications per the manufacturer's designation.","metaTitle":"Siemens 5SL3250-6 SENTRON MCB, 50 A, 2-Pole, B Curve, 4.5 kA","metaDescription":"Siemens 5SL3250-6 SENTRON miniature circuit breaker, 50 A rated, 2-pole, B tripping characteristic, 4.5 kA breaking capacity per EN 60898. Current lifecycle stage. Quoted 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","Solid":"0.75 ... 25 mm²","Width":"36 mm","title":"5SL3250-6","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, B, 50 A","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","Energy limiting class":"3","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":"50 A","Tripping characteristic class":"B","at DC / rated value / maximum":"60 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","Influence of the surrounding temperature":"Periodically +55°C, max. 95% humidity","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","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/e35e16b6b9a89b67fe998a856b2ae6a8.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=356132&mlfb=5SL3250-6"},"ai":{"faq":[{"question":"Where can I buy 5SL3250-6?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."},{"question":"What is the depth of 5SL3250-6?","answer":"The depth is 76 mm, with an installation depth of 70 mm, fitting standard DIN-rail enclosures."},{"question":"What wire sizes does 5SL3250-6 accept?","answer":"The screw terminals accept solid or stranded conductors from 0.75 to 25 mm²."},{"question":"Will 5SL3250-6 drop into a panel specified for 5SL3120-6MB without rewiring?","answer":"Both are 2-pole SENTRON 5SL3 series MCBs with the same DIN-rail footprint (2 width units) and terminal wire range. The 5SL3250-6 is rated 50 A B-curve versus the 5SL3120-6MB's lower rating — if the busbar and downstream conductors are sized for 50 A, it fits without rewiring."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL3250-6","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/5SL3250-6 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}}