Multi-Strand Wound Core for Medical Isolation Transformers from China
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 — China → United States
35%
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
9903.88.0125%Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
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