{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7425-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7425-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SY7425-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7425-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7425-7CC, 4-pole miniature circuit breaker, C-curve, 25 A rated current, 25 kA breaking capacity at 400 V AC (IEC 60947-2), 72 mm wide, quick-assembly mounting.","salesMarkdown":"## What this 4-pole MCB delivers for the panel Its 25 kA breaking capacity per IEC 60947-2 gives you headroom on a 400 V distribution board with a high-fault utility transformer; the 5 kA rating per UL 1077 and CSA C22.2 No.235 covers North American panel builds where the available fault current is lower. Tightening torque is 2.5 to 3.5 N·m, typical for a 35 mm² clamp. The breaker is sealable (padlockable handle) for lockout/tagout, and touch-protected per IP20 with connected conductors. Rated for overvoltage category III, so it's suited for fixed-installation distribution boards downstream of the main incoming supply. ## What the C-curve and breaking capacity mean for selectivity C-curve (tripping characteristic class C) means the magnetic trip fires at 5 to 10 times rated current — so for a 25 A breaker, the instantaneous trip threshold is between 125 A and 250 A. That's high enough to pass the starting current of a 7.5 kW motor on a 25 A feeder but low enough to clear a bolted fault before upstream devices see it. The 25 kA rated short-circuit capacity at 400 V AC (IEC 60947-2) means this breaker can safely interrupt a fault up to that level without welding its contacts or cascading damage to downstream wiring — a key spec for coordination studies on a 400 V distribution board with a transformer larger than 630 kVA.","metaTitle":"Siemens 5SY7425-7CC SENTRON MCB, 4P C-Curve 25A, 25kA IEC","metaDescription":"Siemens 5SY7425-7CC SENTRON 4-pole MCB, C-curve, 25 A, 25 kA breaking capacity at 400 V AC per IEC 60947-2. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 35 mm²","Width":"72 mm","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 35 mm²","Rated Value":"50/60 Hz","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting type":"Quick assembly system","During Storage":"-40 ... +75 °C","Number of poles":"4","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":"4","Number of poles / Note":"4P","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":"C","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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/024813f4b39ff1d00f6de3f6cf68fffa.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=356051&mlfb=5SY7425-7CC","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY7425-7CC/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SY7425-7CC and what is the lead time?","answer":"We source the 5SY7425-7CC to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — send an RFQ for the current lead time and price."},{"question":"What is 5SY7425-7CC's breaking capacity at 400 V AC?","answer":"The 5SY7425-7CC has a rated short-circuit breaking capacity of 25 kA at 400 V AC per IEC 60947-2, and 5 kA per UL 1077 and CSA C22.2 No.235."},{"question":"What wire sizes does the 5SY7425-7CC accept?","answer":"The terminals accept solid or stranded conductors from 0.75 mm² up to 35 mm², with a tightening torque of 2.5 to 3.5 N·m."},{"question":"What compliance documentation does Siemens provide for 5SY7425-7CC?","answer":"The breaker is rated per IEC 60947-2 (25 kA) and UL 1077 / CSA C22.2 No.235 (5 kA). It is halogen-free and silicon-free. Standard Siemens documentation includes the CE declaration, RoHS/REACH compliance statements, and the datasheet with the full spec table."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7425-7CC","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/5SY7425-7CC 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}}