{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7125-8CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7125-8CC","canonicalUrl":"https://aoctrl.com/siemens/5SY7125-8CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7125-8CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7125-8CC miniature circuit breaker, 1-pole, D tripping characteristic, 25 A rated current, 400 V AC, 25 kA breaking capacity per IEC 60947-2.","salesMarkdown":"The Siemens 5SY7125-8CC is a 1-pole SENTRON miniature circuit breaker with a D tripping characteristic, rated 25 A at 400 V AC. The D-curve means it tolerates brief inrush currents up to 10–20× rated — designed for motor and transformer branch circuits where the start-up surge would nuisance-trip a B or C curve. The 25 kA breaking capacity per IEC 60947-2 tells you it can safely interrupt a fault current up to that level without welding contacts or cascading damage upstream. Snaps onto DIN rail via the quick-assembly system, occupying a single 18 mm width unit. Depth is 76 mm, installation depth 70 mm — fits standard distribution boards without crowding the gland plate. Terminals accept solid or stranded conductors from 0.75 to 35 mm²; tightening torque is 2.5–3.5 N·m, typical for screw terminals on this class of MCB. IP20 with connected conductors, so it belongs inside a closed panel, not exposed to washdown. Rated for 50/60 Hz, overvoltage category III, and suitable for mechanical engineering and industrial environments. Ambient temperature range –25 to +55 °C; storage from –40 to +75 °C. Halogen-free and silicon-free construction — relevant for clean-room or sensitive electronic co-location. Sealable terminals allow tamper-proofing after commissioning.","metaTitle":"Siemens 5SY7125-8CC SENTRON MCB, 1P D-curve 25 A, 25 kA","metaDescription":"Siemens 5SY7125-8CC SENTRON miniature circuit breaker, 1-pole D-curve, 25 A, 400 V AC, 25 kA breaking capacity (IEC 60947-2). Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 35 mm²","Width":"18 mm","title":"5SY7125-8CC","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 35 mm²","Rated Value":"50/60 Hz","description":"Miniature circuit breaker 230/400 V 15kA, 1-pole, D, 25A","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting type":"Quick assembly system","During Storage":"-40 ... +75 °C","Number of poles":"1","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-25 ... +55 °C","Product designation":"Miniature circuit breaker","Protection class IP":"IP20, with connected conductors","at AC / rated value":"400 V","Overvoltage category":"III","Combined Terminal Top":"Yes","Number of width units":"1","Number of poles / Note":"1P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","Combined Terminal Bottom":"Yes","circuit-breaker / Design":"5SY7CC","Suitability for operation":"Mechanical engineering / industry","Current / at AC / rated value":"25 A","Tripping characteristic class":"D","at DC / rated value / maximum":"72 V","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"25 kA","Product feature / Touch protection":"Yes","Influence of the surrounding temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","at AC / acc. to UL 1077 and CSA C22.2 No.235":"5 kA","Tightening torque / with screw-type terminals":"2.5 ... 3.5 N·m","Product function / neutral conductor switching":"No","with multi-phase operation / at AC / rated value":"440 V","with single-phase operation / at AC / rated value":"440 V","Mechanical service life (switching cycles) / typical":"10 000","Tightening torque [lbf·in] / with screw-type terminals":"22 ... 31 lbf·in"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5bd41860fc586f43c4b0030058e970e4.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=21009&mlfb=5SY7125-8CC"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY7125-8CC?","answer":"25 kA per IEC 60947-2 at 400 V AC. Under UL 1077 / CSA C22.2 No. 235 it is rated 5 kA."},{"question":"Where can I buy 5SY7125-8CC?","answer":"Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"What compliance documentation is available for 5SY7125-8CC?","answer":"The breaker carries IEC 60947-2 and UL 1077 / CSA C22.2 No. 235 ratings. It is halogen-free and silicon-free. Full RoHS/REACH declarations are available from the manufacturer upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7125-8CC","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/5SY7125-8CC 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}}