{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY5125-6CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY5125-6CC","canonicalUrl":"https://aoctrl.com/siemens/5SY5125-6CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY5125-6CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY5 series miniature circuit breaker, 1-pole, B tripping characteristic, 25 A rated current, 220 V DC, 10 kA breaking capacity, 18 mm width.","salesMarkdown":"The Siemens SENTRON 5SY5125-6CC is a 1-pole miniature circuit breaker rated 25 A at 220 V DC with a B-curve tripping characteristic and 10 kA breaking capacity per IEC 60947-2. ## DC ratings and breaking capacity Rated 220 V DC with a maximum of 250 V DC. The 10 kA breaking capacity at 220 V DC per IEC 60947-2 means it can safely interrupt a fault current up to 10,000 A without welding contacts or cascading failure upstream. Overvoltage category III covers fixed-installation distribution panels. The combined terminal design at both top and bottom accepts screw-type terminations with a tightening torque of 2.5 to 3.5 N·m (22 to 31 lbf·in). Halogen-free and silicon-free construction suits environments sensitive to outgassing. Installation depth is 70 mm. Ambient temperature range -25 to +55 °C operating, -40 to +75 °C storage. Sealable for tamper-proof installations.","metaTitle":"Siemens 5SY5125-6CC SENTRON MCB, 1P B 25A DC 220V 10kA","metaDescription":"Siemens SENTRON 5SY5125-6CC miniature circuit breaker, 1-pole, B-curve, 25A, 220V DC, 10kA breaking capacity. Current lifecycle stage. Sourced to order against RFQ.","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":"5SY5125-6CC","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 35 mm²","description":"Miniature circuit-breaker 220 V DC 10kA, 1-pole, B, 25A","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting type":"Quick assembly system","During Storage":"-40 ... +75 °C","Number of poles":"1","Type of voltage":"DC","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 DC / rated value":"220 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":"5SY5CC","Suitability for operation":"Mechanical engineering / industry","Tripping characteristic class":"B","at DC / rated value / maximum":"250 V","Position / of power supply cord":"Consider polarity","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 DC / acc. to IEC 60947-2 / rated value":"10 kA","Tightening torque / with screw-type terminals":"2.5 ... 3.5 N·m","Product function / neutral conductor switching":"No","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/0c8f1f60941ea29d58f1682a16aa7329.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=426899&mlfb=5SY5125-6CC"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SY5125-6CC at 220 V DC?","answer":"The breaking capacity is 10 kA at 220 V DC per IEC 60947-2, with a maximum rated voltage of 250 V DC."},{"question":"Where can I buy the 5SY5125-6CC and what is the price?","answer":"This part is sourced to order against an RFQ through independent distribution. Current pricing and availability are confirmed at quote time."},{"question":"What conductor sizes does the 5SY5125-6CC accept?","answer":"It accepts solid and stranded conductors from 0.75 mm² up to 35 mm² at both top and bottom terminals."},{"question":"Does the 5SY5125-6CC fit a standard DIN rail?","answer":"Yes, it mounts on a DIN rail via the quick assembly system, occupies 18 mm (1 width unit), and has a depth of 76 mm and height of 90 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY5125-6CC","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/5SY5125-6CC 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}}