The USITC Harmonized Tariff Schedule lists these subheadings under heading 8504 (Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof:). Rates are the Column 1 general rates as served by hts.usitc.gov on 2026-10-02. Additional duties that depend on the country of origin sit in Chapter 99 and are not shown here.
| HTS no. | Description | General rate |
|---|---|---|
| 8504.10.00.00 | Ballasts for discharge lamps or tubes | 3% |
| 8504.21.00 | Having a power handling capacity not exceeding 650 kVA | Free |
| 8504.22.00 | Having a power handling capacity exceeding 650 kVA but not exceeding 10,000 kVA | Free |
| 8504.23.00 | Having a power handling capacity exceeding 10,000 kVA | 1.6% |
| 8504.31.20.00 | Unrated | Free |
| 8504.31.40 | Having a power handling capacity less than 1 kVA | 6.6% |
| 8504.31.60.00 | Having a power handling capacity of 1 kVA | 1.6% |
| 8504.32.00.00 | Having a power handling capacity exceeding 1 kVA but not exceeding 16 kVA | 2.4% |
| 8504.33.00 | Having a power handling capacity exceeding 16 kVA but not exceeding 500 kVA | 1.6% |
| 8504.34.00.00 | Having a power handling capacity exceeding 500 kVA | 1.6% |
| 8504.40.40.00 | Speed drive controllers for electric motors | Free |
| 8504.40.60 | Suitable for physical incorporation into automatic data processing machines or units thereof of heading 8471 | Free |
| 8504.40.70 | Other | Free |
| 8504.40.85.00 | For telecommunication apparatus | Free |
| 8504.40.95 | Other | Free |
Source: USITC Harmonized Tariff Schedule, retrieved 2026-10-02.
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