{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6125-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6125-7","canonicalUrl":"https://aoctrl.com/siemens/5SL6125-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6125-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6125-7, miniature circuit breaker, 1-pole, C-curve, 25 A, 6 kA per EN 60898/IEC 60947-2, 1 MW, IP20 with conductors, 18 mm wide.","salesMarkdown":"The Siemens 5SL6125-7 is a 1-pole SENTRON miniature circuit breaker with a C tripping characteristic, rated 25 A at 230/400 V AC. If your panel's prospective short-circuit current (PSCC) exceeds 6 kA, step up to the 10 kA variant in the same SENTRON family — the 5SL4 series — but the footprint (18 mm width per pole) and depth (76 mm) are identical, so no re-drilling. Single-pole switches only the phase; the neutral is either a solid busbar or a separate 2-pole device. Power loss of 2.6 W per pole at rated current in hot state matters for thermal coordination inside a crowded enclosure — 18 mm width leaves little air gap; derating per IEC 60898-1 table applies when ambient exceeds 30 °C or more than six breakers are ganged without spacing. Install inside a distribution board with at least IP3X enclosure rating. One modular width (18 mm) per pole. The sealable feature allows a lead seal through the toggle slot for revenue-meter applications or tamper-proof zones. Halogen-free and silicon-free construction meets railway and marine material requirements where outgassing in a fire must be minimized.","metaTitle":"Siemens 5SL6125-7 SENTRON MCB, 1P, C-Curve, 25A, 6kA","metaDescription":"Siemens 5SL6125-7 SENTRON miniature circuit breaker, 1-pole, C-curve, 25 A, 6 kA breaking capacity per EN 60898/IEC 60947-2. Active production, sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","title":"5SL6125-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 230/400 V 6kA, 1-pole, C, 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 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":"1","Tripping Characteristic Class":"C","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"6 kA","according to IEC 60947-2 rated value":"6 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":"2.6 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.91","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=122885&mlfb=5SL6125-7"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SL6125-7?","answer":"6 kA per EN 60898 and IEC 60947-2 at 230/400 V AC. This is the standard rating for residential and light commercial distribution boards in Europe."},{"question":"What is the difference between 5SL6125-7 and 5SL4363-7?","answer":"The 5SL4363-7 is a 3-pole version with 10 kA breaking capacity and wider 54 mm (3 MW) footprint. The 5SL6125-7 is 1-pole, 6 kA, 18 mm wide. Both share the same 76 mm depth, C-curve, and SENTRON platform — so a panel designed for the 3-pole unit can accept the 1-pole unit on the same DIN rail without mechanical modification, but the lower kA rating must be checked against the site's prospective fault current."},{"question":"Where can I buy 5SL6125-7 and how is it quoted?","answer":"Sourced to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit a request with your target volume and delivery window for a firm commercial proposal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6125-7","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/5SL6125-7 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}}