{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6125-6YA","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6125-6YA","canonicalUrl":"https://aoctrl.com/siemens/5SL6125-6YA","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6125-6YA","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6125-6YA miniature circuit breaker, 1-pole, B-curve, 25 A, 6 kA breaking capacity per EN 60898, 1 MW width.","salesMarkdown":"The Siemens SENTRON 5SL6125-6YA is a 1-pole miniature circuit breaker rated 25 A with a B tripping characteristic and a 6 kA breaking capacity per EN 60898. It protects branch circuits in residential and infrastructure panels against overload and short-circuit faults. ## DIN-rail fit and panel integration Occupies a single modular width unit (18 mm) on standard DIN rail. Listed as current production. The 25 A rating on a B-curve means the breaker holds steady through normal load but opens fast on a hard short. Mechanical life of 10 000 operating cycles is typical for this class; the part is not intended for frequent switching duty.","metaTitle":"Siemens 5SL6125-6YA SENTRON MCB, 1P B 25A 6kA","metaDescription":"Siemens SENTRON 5SL6125-6YA miniature circuit breaker, 1-pole, B-curve, 25 A, 6 kA per EN 60898. Current production. Sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","title":"5SL6125-6YA","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 230/400 V 6kA, 1-pole, B, 25A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P","Number Of Poles":"1","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 distribution board cover","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":"1","Tripping Characteristic Class":"B","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"6 kA","Type Of Voltage Of The Operating Voltage":"AC","with multi-phase operation at AC maximum":"400 V","Value Range Of The Supply Voltage Frequency":"50/60 Hz","with multi-phase operation at AC rated value":"400 V","with single-phase operation at AC rated value":"250 V","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e5562d13cec3f78d16b1ae750ea4f1d0.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=641138&mlfb=5SL6125-6YA"},"ai":{"faq":[{"question":"Will 5SL6125-6YA drop into a panel specified around 5SL4363-7 without rewiring?","answer":"No. The 5SL4363-7 is a 3-pole C-curve breaker with a 54 mm width and a 10 kA breaking capacity. The 5SL6125-6YA is a 1-pole B-curve unit at 18 mm wide. The pole count, footprint, and curve are different — the panel busbar arrangement and wiring would need to change."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6125-6YA","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/5SL6125-6YA 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}}