{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6125-7MB","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6125-7MB","canonicalUrl":"https://aoctrl.com/siemens/5SL6125-7MB","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6125-7MB","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6125-7MB miniature circuit breaker, 1-pole, C tripping characteristic, 25 A rated current, 6 kA breaking capacity per EN 60898, 230/400 V AC.","salesMarkdown":"If the fault level at the panelboard exceeds 6 kA, step up to the 10 kA rated siblings in the same SENTRON family. It also carries a DC rating of 72 V maximum — useful for DC sub-circuits in control panels, though the C-curve's magnetic trip responds differently on DC, so verify coordination with the DC load's inrush profile. Snap-on DIN-rail mounting in any position. Accepts supplementary devices (shunt trip, auxiliary contacts, alarm switch) — the product extension is installable, so you can add remote tripping or status indication without replacing the breaker. Sealable terminals are standard, which satisfies utility meter-seal requirements in many jurisdictions. Halogen-free and silicon-free construction — no corrosive off-gassing under fault, which matters when the breaker shares an enclosure with sensitive electronics or silver contacts. For high-cycle switching applications (daily disconnect under load), consider a contactor instead.","metaTitle":"Siemens 5SL6125-7MB SENTRON MCB, 1P C 25A 6kA","metaDescription":"Siemens 5SL6125-7MB SENTRON miniature circuit breaker, 1-pole, C-curve, 25 A, 6 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":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","title":"5SL6125-7MB","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","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":"2.2 W"}},"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=464408&mlfb=5SL6125-7MB"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SL6125-7MB?","answer":"6 kA per EN 60898 at 230/400 V AC. That is the maximum fault current it can safely interrupt. If your panel's prospective short-circuit current exceeds 6 kA, you need a higher-rated breaker such as the 5SL4363-7 (10 kA)."},{"question":"Will the 5SL6125-7MB drop into a panel specified for the 5SL6120-7 without rewiring?","answer":"Yes — both share the same 18 mm width (1 modular unit), same 76 mm depth, same DIN-rail mounting, and same terminal layout. The only difference is the current rating: 25 A vs 20 A. No rewiring needed if the conductor and upstream protection are sized for 25 A."},{"question":"Where can I buy the 5SL6125-7MB?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6125-7MB","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/5SL6125-7MB 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}}