{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL1250-7MB","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL1250-7MB","canonicalUrl":"https://aoctrl.com/siemens/5SL1250-7MB","factsUrl":"https://aoctrl.com/api/mcp/products/5SL1250-7MB","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON miniature circuit breaker, 5SL1250-7MB, 2-pole, C-curve, 50 A rated, 3 kA breaking capacity per IEC 60947-2, 230/400 V AC.","salesMarkdown":"The Siemens 5SL1250-7MB is a SENTRON miniature circuit breaker — 2-pole, C-curve, rated 50 A, with a 3 kA breaking capacity per IEC 60947-2. It's built for residential and infrastructure branch circuits: lighting, socket outlets, small distribution boards. IP20 with conductors connected means it's enclosed in a panel, not exposed to washdown. Single-phase operation at 253 V AC and multi-phase at 440 V AC cover split-phase and three-phase distribution. The 50/60 Hz rating is universal for mains frequencies worldwide. The 36 mm width occupies two modular spaces — standard for a 2-pole MCB. Any mounting position is allowed, so it can be oriented vertically or horizontally in tight enclosures. Sealable for tamper-proof applications. Halogen-free and silicon-free — relevant for clean-room or high-reliability environments where outgassing must be minimized.","metaTitle":"Siemens 5SL1250-7MB SENTRON MCB, 2P, C-curve, 50 A, 3 kA IEC","metaDescription":"Siemens 5SL1250-7MB SENTRON miniature circuit breaker, 2-pole, C-curve, 50 A, 3 kA breaking capacity per IEC 60947-2. Active production. 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","Width":"36 mm","title":"5SL1250-7MB","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Circuit breaker 230/400V 3kA, 2pole, C, 50A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"2P","Number Of Poles":"2","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","Suitability For Operation":"Residential buildings/infrastructure","at DC rated value maximum":"72 V","Number Of Modular Width Units":"2","Tripping Characteristic Class":"C","supply voltage at AC rated value":"230 V","according to IEC 60947-2 rated value":"3 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":"253 V","vibration resistance according to IEC 60068-2-6":"no","Mechanical Service Life (Operating Cycles) Typical":"4 000","power loss [W] for rated value of the current at AC in hot operating state per pole":"4.3 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/818616d53fb2b67ec1d5a6758ff8b2b6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1046735&mlfb=5SL1250-7MB"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SL1250-7MB?","answer":"3 kA rated value according to IEC 60947-2. This is the maximum fault current the breaker can safely interrupt under standard test conditions."},{"question":"Where can I buy the 5SL1250-7MB and get current pricing?","answer":"We source this part to order against an RFQ. Availability and current pricing are confirmed at quote time — submit an inquiry through the storefront."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL1250-7MB","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/5SL1250-7MB 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}}