Heading 8504: Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof
In chapter 85, Electrical machinery and equipment and parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles. 22 rate lines, laid out as HTS Revision 20 (2026) prints them.
| HTS number | Description | Units | General | Special | Column 2 |
|---|---|---|---|---|---|
| 8504 | Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: | ||||
| 8504.10.00.00 | Ballasts for discharge lamps or tubes | No. | 3% | Free (A*,AU,B,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 35% |
| Liquid dielectric transformers: | |||||
| 8504.21.00 | Having a power handling capacity not exceeding 650 kVA | Free | 35% | ||
| 8504.21.00.20 | Having a power handling capacity not exceeding 50 kVA | No., kg | |||
| 8504.21.00.40 | Having a power handling capacity exceeding 50 kVA but not exceeding 100 kVA | No., kg | |||
| 8504.21.00.60 | Having a power handling capacity exceeding 100 kVA but not exceeding 500 kVA | No., kg | |||
| 8504.21.00.80 | Having a power handling capacity exceeding 500 kVA but not exceeding 650 kVA | No., kg | |||
| 8504.22.00 | Having a power handling capacity exceeding 650 kVA but not exceeding 10,000 kVA | Free | 35% | ||
| 8504.22.00.40 | Having a power handling capacity exceeding 650 kVA but not exceeding 2,500 kVA | No., kg | |||
| 8504.22.00.80 | Having a power handling capacity exceeding 2,500 kVA but not exceeding 10,000 kVA | No., kg | |||
| 8504.23.00 | Having a power handling capacity exceeding 10,000 kVA | 1.6% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 35% | |
| 8504.23.00.41 | Having a power handling capacity exceeding 10,000 kVA but not exceeding 59,999 kVA | No., kg | |||
| 8504.23.00.45 | Having a power handling capacity exceeding 59,999 kVA but not exceeding 100,000 kVA | No., kg | |||
| 8504.23.00.80 | Having a power handling capacity exceeding 100,000 kVA | No., kg | |||
| Other transformers: | |||||
| 8504.31 | Having a power handling capacity not exceeding 1 kVA: | ||||
| 8504.31.20.00 | Unrated | No. | Free | 35% | |
| Other: | |||||
| 8504.31.40 | Having a power handling capacity less than 1 kVA | 6.6% | Free (A,AU,B,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 35% | |
| 8504.31.40.35 | Having a power handling capacity less than 40 VA | No. | |||
| 8504.31.40.65 | Having a power handling capacity 40 VA or greater | No. | |||
| 8504.31.60.00 | Having a power handling capacity of 1 kVA | No. | 1.6% | Free (A,AU,B,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 35% |
| 8504.32.00.00 | Having a power handling capacity exceeding 1 kVA but not exceeding 16 kVA | No., kg | 2.4% | Free (A,AU,B,BH,C,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 35% |
| 8504.33.00 | Having a power handling capacity exceeding 16 kVA but not exceeding 500 kVA | 1.6% | Free (A,AU,B,BH,C,CL,CO,D,E,IL,JO,JP,KR,MA,OM,P,PA,PE,S,SG) | 35% | |
| 8504.33.00.20 | Having a power handling capacity exceeding 16 kVA but not exceeding 50 kVA | No., kg | |||
| 8504.33.00.40 | Having a power handling capacity exceeding 50 kVA but not exceeding 500 kVA | No., kg | |||
| 8504.34.00.00 | Having a power handling capacity exceeding 500 kVA | No., kg | 1.6% | Free (A,AU,B,BH,CL,CO,D,E,IL,JO,JP,KR,MA,OM,P,PA,PE,S,SG) | 35% |
| 8504.40 | Static converters: | ||||
| 8504.40.40.00 | Speed drive controllers for electric motors | No. | Free | 35% | |
| Power supplies for automatic data processing machines or units thereof of heading 8471; power supplies for goods of subheading 8443.31 or 8443.32; power supplies for monitors of subheading 8528.42 or 8528.52 or projectors of subheading 8528.62: | |||||
| 8504.40.60 | Suitable for physical incorporation into automatic data processing machines or units thereof of heading 8471 | Free | 35% | ||
| 8504.40.60.01 | With a power output not exceeding 50 W | No. | |||
| 8504.40.60.07 | With a power output exceeding 50 W but not exceeding 150 W | No. | |||
| 8504.40.60.12 | With a power output exceeding 150 W but not exceeding 500 W | No. | |||
| 8504.40.60.18 | Other | No. | |||
| 8504.40.70 | Other | Free | 35% | ||
| 8504.40.70.01 | With a power output not exceeding 50 W | No. | |||
| 8504.40.70.07 | With a power output exceeding 50 W but not exceeding 150 W | No. | |||
| 8504.40.70.12 | With a power output exceeding 150 W but not exceeding 500 W | No. | |||
| 8504.40.70.18 | Other | No. | |||
| 8504.40.85.00 | For telecommunication apparatus | No. | Free | 35% | |
| 8504.40.95 | Other | Free | 35% | ||
| Rectifiers and rectifying apparatus: | |||||
| Power supplies: | |||||
| 8504.40.95.10 | With a power output not exceeding 50 W | No. | |||
| 8504.40.95.20 | With a power output exceeding 50 W but not exceeding 150 W | No. | |||
| 8504.40.95.30 | With a power output exceeding 150 W but not exceeding 500 W | No. | |||
| 8504.40.95.40 | Other | No. | |||
| 8504.40.95.50 | Other | No. | |||
| Inverters: | |||||
| 8504.40.95.71 | Of a capacity not exceeding 200 W | No. | |||
| 8504.40.95.73 | Of a capacity exceeding 200 W but not exceeding 650 W | No. | |||
| 8504.40.95.75 | Of a capacity exceeding 650 W but not exceeding 20,000 W | No. | |||
| 8504.40.95.77 | Of a capacity exceeding 20,000 W but not exceeding 125,000 W | No. | |||
| 8504.40.95.78 | Of a capacity exceeding 125,000 W but not exceeding 1,000,000 W | No. | |||
| 8504.40.95.79 | Other | No. | |||
| 8504.40.95.80 | Other | No. | |||
| 8504.50 | Other inductors: | ||||
| 8504.50.40.00 | For power supplies for automatic data processing machines or units thereof of heading 8471; power supplies for goods of subheading 8443.31 or 8443.32; power supplies for monitors of subheading 8528.42 or 8528.52 or projectors of subheading 8528.62; for telecommunication apparatus | No. | Free | 35% | |
| 8504.50.80.00 | Other | No. | Free | 35% | |
| 8504.90 | Parts: | ||||
| Of power supplies for automatic data processing machines or units thereof of heading 8471; of power supplies for goods of subheading 8443.31 or 8443.32; of power supplies for monitors of subheading 8528.42 or 8528.52 or projectors of subheading 8528.62: | |||||
| 8504.90.20.00 | Printed circuit assemblies | No. | Free | 35% | |
| 8504.90.41.00 | Other | No. | Free | 35% | |
| Other: | |||||
| Printed circuit assemblies: | |||||
| 8504.90.65.00 | Of the goods of subheading 8504.40 or 8504.50 for telecommunication apparatus | No. | Free | 35% | |
| 8504.90.75.00 | Other | No. | Free | 35% | |
| 8504.90.96 | Other | Free | 35% | ||
| Ferrites: | |||||
| 8504.90.96.10 | For transformers | No. | |||
| 8504.90.96.30 | Other | No. | |||
| Other parts: | |||||
| Of transformers: | |||||
| 8504.90.96.34 | Laminations for incorporation into stacked cores | No., kg | |||
| 8504.90.96.38 | Stacked cores for incorporation into transformers | No., kg | |||
| 8504.90.96.42 | Wound cores for incorporation into transformers | No., kg | |||
| 8504.90.96.46 | Other | No., kg | |||
| 8504.90.96.50 | Of static converters | No. | |||
| 8504.90.96.90 | Other | No. |
Rates are quoted as printed. Each 8-digit number opens its own page with footnotes and cited chapter 99 headings.
Watch lines in heading 8504
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What this page leaves to your broker
This page quotes the schedule. It does not add the rates together, and it does not say whether a chapter 99 heading applies to a shipment: that turns on the country of origin, the dates and the U.S. notes to chapter 99. Section 301, Section 232 and other chapter 99 measures list the goods they cover in those notes and in Federal Register notices, so a line can be covered by a heading its footnotes never cite. A licensed customs broker makes the determination.
Built September 29, 2026 from HTS Revision 20 (2026) (USITC release 2026HTSRev20, published September 23, 2026, current since September 28, 2026). The schedule changes often; USITC's own site always has the current text.