E-I Laminated Wound Core for Distribution Transformers from Mexico
An E-I shaped silicon steel laminated core with precision windings, manufactured for integration into medium-voltage distribution transformers in electrical grids. Classified under HTS 8504.90.96.42 due to its wound construction specifically for transformer incorporation, optimizing flux density and efficiency.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Include engineering drawings showing E-I lamination stack and winding configuration to confirm transformer-specific design during customs review
• Test for core loss specifications and provide certification, as substandard materials may trigger quality-based rejections or higher duties
• Bundle with transformer assembly invoices if imported as part of production kits to qualify for potential duty relief programs