{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4125-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4125-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SY4125-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4125-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4125-7CC, 1-pole miniature circuit breaker, C-curve, 25 A rated, 400 V AC, 10 kA breaking capacity per EN 60898, 5 kA per UL 1077.","salesMarkdown":"## What the 5SY4125-7CC carries in the nacelle The Siemens 5SY4125-7CC SENTRON miniature circuit breaker is a 1-pole, C-curve unit rated 25 A at 400 V AC, with a 10 kA breaking capacity per EN 60898 and 5 kA per UL 1077. That 10 kA IEC number means it will clear a bolted fault up to that level without welding its contacts — critical when you're protecting a pitch-drive supply 100 meters up where an upstream MCCB might be a long coordination step away. C-curve trips between 5 and 10 times rated current, so it handles motor inrush (pitch motors, hydraulic pumps) without nuisance tripping, while still clearing a hard short fast enough to limit let-through energy. ## Rated for the shake and the cold Survives the nacelle: temperature range from -40 °C to 75 °C covers a winter start on a North Sea turbine and a July afternoon in the Sahara. Vibration resistance per IEC 60068-2-6 (±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz) means it won't rattle its internal mechanism loose on a tower that sways a meter at the hub. Pollution degree 3 and overvoltage category III qualify it for the control cabinet in an industrial environment — no special derating for conductive dust or transient overvoltages from switching drives. ## Panel fit and wiring Width is 18 mm (1 width unit), depth 76 mm, height 90 mm. Mounts on a quick-assembly DIN rail — snaps on, no tools. Combined terminals top and bottom accept incoming and outgoing conductors; touch protection is integrated. The 70 mm installation depth leaves room behind a shallow gland plate. Halogen-free and silicon-free construction matters for sensitive atmospheres (offshore, clean room). No neutral conductor switching on this single-pole unit.","metaTitle":"Siemens 5SY4125-7CC SENTRON MCB, 1P C 25 A 10 kA","metaDescription":"Siemens 5SY4125-7CC SENTRON miniature circuit breaker, 1-pole C-curve, 25 A, 400 V AC, 10 kA (IEC 60898), 5 kA (UL 1077). Current lifecycle. Wide temp range -40 to 75 °C. Available","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"50/60 Hz","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting Type":"Quick assembly system","Number Of Poles":"1","Type Of Voltage":"AC","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Energy Limiting Class":"3","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":"5SY4CC","Suitability For Operation":"Mechanical engineering / industry","Tripping Characteristic Class":"C","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"10 kA","Position / Of Power Supply Cord":"Any","Product Feature / Touch Protection":"Yes","supply voltage / at AC / rated value":"400 V","operating current / at AC / rated value":"25 A","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","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","with single-phase operation / at AC / rated value":"440 V","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/068eb21e861086d5c24a2e9dad495e61.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=363253&mlfb=5SY4125-7CC","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY4125-7CC/alternatives.json"},"ai":{"faq":[{"question":"What is 5SY4125-7CC's listed depth (76 mm) on this component line?","answer":"The depth is 76 mm, with an installation depth of 70 mm behind the panel face."},{"question":"What compliance documentation does the 5SY4125-7CC carry (RoHS, REACH, UL, IEC)?","answer":"The part carries UL 1077 and CSA C22.2 No.235 listing at 5 kA, plus IEC 60898 certification at 10 kA. It is halogen-free and silicon-free, which supports RoHS/REACH compliance profiles."},{"question":"How do I get current pricing and availability for 5SY4125-7CC?","answer":"Submit an RFQ through the distributor. Availability and current pricing are confirmed at quote time — no stock or price figures are published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4125-7CC","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/5SY4125-7CC 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}}