{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY8250-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY8250-7","canonicalUrl":"https://aoctrl.com/siemens/5SY8250-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY8250-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY8250-7 miniature circuit breaker, 2-pole, C characteristic, 50 A rated current, 25 kA breaking capacity at 400 V AC per IEC 60947-2.","salesMarkdown":"The Siemens 5SY8250-7 is a 2-pole SENTRON miniature circuit breaker with C-curve tripping characteristic, rated 50 A at 400 V AC. Its 25 kA breaking capacity per IEC 60947-2 means it clears high fault currents in industrial panels without cascading upstream — a solid choice for main or sub-feed protection where the prospective short-circuit current is known to be under 25 kA. The 50 A rating holds at 45 °C ambient; derate to 48.75 A at 50 °C and 47.45 A at 55 °C (–). That 2-module width (36 mm) and 70 mm installation depth fit standard DIN-rail enclosures — no extra gutter space needed for this pole count. The 5SY8250-7 carries a current lifecycle stage, meaning Siemens still manufactures it as an active catalog line. No official successor has been issued. Halogen-free and silicon-free construction (–) suits clean-room or sensitive electronics environments. Sealable terminals allow tamper-proofing after commissioning. Vibration resistance per IEC 60068-2-6 (±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz) means it holds up on machine-mounted panels.","metaTitle":"Siemens 5SY8250-7 SENTRON MCB, 2P C 50A, 25kA","metaDescription":"Siemens 5SY8250-7 SENTRON miniature circuit breaker, 2-pole, C-curve, 50 A rated, 25 kA breaking capacity per IEC 60947-2. Current lifecycle stage, available to order. Request a qu","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"2","Type Of Voltage":"AC","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","acc. to IEC 81346-2":"F","at AC / rated value":"50 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Number Of Poles / Note":"2P","acc. to DIN EN 61346-2":"F","at 45 °C / rated value":"50 A","at 50 °C / rated value":"48.75 A","at 55 °C / rated value":"47.45 A","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"2","Tripping Characteristic Class":"C","Position / Of Power Supply Cord":"Any","acc. to IEC 60947-2 / rated value":"25 kA","Product Feature / Touch Protection":"Yes","Supply Voltage Frequency / Rated Value":"50/60 Hz","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","at DC / acc. to IEC 60947-2 / rated value":"15 kA","at AC / acc. to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance / acc. to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Product Function / Neutral Conductor Switching":"No","with multi-phase operation / at AC / rated value":"440 V","operating voltage / at DC / rated value / maximum":"72 V","with single-phase operation / at AC / rated value":"440 V","Mechanical Service Life (Operating Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c0135cec03a7154ea4bb11d8853dd808.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=250572&mlfb=5SY8250-7","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY8250-7/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SY8250-7 and get a price?","answer":"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 commercial offer."},{"question":"What is 5SY8250-7's depth on this component line?","answer":"The 5SY8250-7 has a depth of 76 mm and an installation depth of 70 mm."},{"question":"What is 5SY8250-7's width?","answer":"The 5SY8250-7 is 36 mm wide, which corresponds to 2 modular width units on a DIN rail."},{"question":"Will 5SY8250-7 drop into a panel specified around 5SY4140-7 without rewiring?","answer":"Both are 2-pole SENTRON MCBs on the same 36 mm footprint with identical DIN-rail mounting and terminal layout, so a 5SY8250-7 fits the same panel cutout and busbar arrangement. However, the 5SY8250-7 is rated 50 A with a 25 kA breaking capacity, while the 5SY4140-7 is a lower-current variant — verify the branch circuit's overcurrent protection rating before swapping."},{"question":"What compliance documentation does Siemens provide for 5SY8250-7?","answer":"The 5SY8250-7 is designed to IEC 60947-2 (breaking capacity), UL 1077 and CSA C22.2 No. 235 (5 kA rating for North American supplementary protection), and IEC 60068-2-6 (vibration). It is halogen-free and silicon-free. Full RoHS/REACH declarations are available from Siemens on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY8250-7","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/5SY8250-7 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}