Multi-Strand Wound Core for Medical Isolation Transformers from Canada
Wound core using Litz wire multi-strand construction for patient-safe isolation transformers in medical equipment, preventing ground faults. Classified HTS 8504.90.96.42 for wound transformer cores, meeting IEC 60601 leakage current standards.
Duty Rate — Canada → 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
• Include IEC 60601-1 certification and dielectric test results mandatory for medical electrical parts
• Declare Litz wire strand count and skin effect mitigation data to justify medical-grade construction
• FDA import alerts common; pre-clear with device listing number before transformer core shipment