Self-Protected Transformer 25 kVA from Mexico
25 kVA single-phase pole transformer with integrated bay-o-net fusing and mineral oil dielectric. Self-protected design reduces external protection needs. Classifies in 8504.21.00.
Duty Rate — Mexico → United States
25%
Rate breakdown
9903.82.0925%Except as provided for in headings 9903.82.16, 9903.82.20–9903.82.26 and 9903.85.68, articles of copper and derivative aluminum and steel articles, as provided for in subdivisions (c)(vi)–(viii) and (xi) of U.S. note 16 to this subchapter
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Document fuse coordination curves for full assembly declaration
• Integrated protection doesn't change transformer HTS—principal function rules
• Test for partial discharge levels as required for high-voltage imports