Heading 8504: Electrical transformers, static converters (for example, rectifiers) and inductors; parts…
Every line of heading 8504 in the U.S. Harmonized Tariff Schedule, with its general (column 1) duty rate. Open a code for the landed cost calculator, trade agreement rates and email alerts if the rate changes.
Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof
Chapter 85: Electrical machinery and equipment; sound and TV equipment. Schedule checked on November 8, 2026.
Not always the total: additional chapter 99 duties (such as Section 232 or Section 301), antidumping or countervailing duties may apply depending on the country of origin. See recent chapter 99 changes →
Tariff lines
| HTS code | Official 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 |
| 8504.21.00.20 | Having a power handling capacity not exceeding 50 kVA | |
| 8504.21.00.40 | Having a power handling capacity exceeding 50 kVA but not exceeding 100 kVA | |
| 8504.21.00.60 | Having a power handling capacity exceeding 100 kVA but not exceeding 500 kVA | |
| 8504.21.00.80 | Having a power handling capacity exceeding 500 kVA but not exceeding 650 kVA | |
| 8504.22.00 | Having a power handling capacity exceeding 650 kVA but not exceeding 10,000 kVA | Free |
| 8504.22.00.40 | Having a power handling capacity exceeding 650 kVA but not exceeding 2,500 kVA | |
| 8504.22.00.80 | Having a power handling capacity exceeding 2,500 kVA but not exceeding 10,000 kVA | |
| 8504.23.00 | Having a power handling capacity exceeding 10,000 kVA | 1.6% |
| 8504.23.00.41 | Having a power handling capacity exceeding 10,000 kVA but not exceeding 59,999 kVA | |
| 8504.23.00.45 | Having a power handling capacity exceeding 59,999 kVA but not exceeding 100,000 kVA | |
| 8504.23.00.80 | Having a power handling capacity exceeding 100,000 kVA | |
| 8504.31 | Having a power handling capacity not exceeding 1 kVA: | |
| 8504.31.20.00 | Unrated | Free |
| 8504.31.40 | Having a power handling capacity less than 1 kVA | 6.6% |
| 8504.31.40.35 | Having a power handling capacity less than 40 VA | |
| 8504.31.40.65 | Having a power handling capacity 40 VA or greater | |
| 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% |
| 8504.33.00.20 | Having a power handling capacity exceeding 16 kVA but not exceeding 50 kVA | |
| 8504.33.00.40 | Having a power handling capacity exceeding 50 kVA but not exceeding 500 kVA | |
| 8504.34.00.00 | Having a power handling capacity exceeding 500 kVA | 1.6% |
| 8504.40 | Static converters: | |
| 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 |
| 8504.40.60.01 | With a power output not exceeding 50 W | |
| 8504.40.60.07 | With a power output exceeding 50 W but not exceeding 150 W | |
| 8504.40.60.12 | With a power output exceeding 150 W but not exceeding 500 W | |
| 8504.40.60.18 | Other | |
| 8504.40.70 | Other | Free |
| 8504.40.70.01 | With a power output not exceeding 50 W | |
| 8504.40.70.07 | With a power output exceeding 50 W but not exceeding 150 W | |
| 8504.40.70.12 | With a power output exceeding 150 W but not exceeding 500 W | |
| 8504.40.70.18 | Other | |
| 8504.40.85.00 | For telecommunication apparatus | Free |
| 8504.40.95 | Other | Free |
| 8504.40.95.10 | With a power output not exceeding 50 W | |
| 8504.40.95.20 | With a power output exceeding 50 W but not exceeding 150 W | |
| 8504.40.95.30 | With a power output exceeding 150 W but not exceeding 500 W | |
| 8504.40.95.40 | Other | |
| 8504.40.95.50 | Other | |
| 8504.40.95.71 | Of a capacity not exceeding 200 W | |
| 8504.40.95.73 | Of a capacity exceeding 200 W but not exceeding 650 W | |
| 8504.40.95.75 | Of a capacity exceeding 650 W but not exceeding 20,000 W | |
| 8504.40.95.77 | Of a capacity exceeding 20,000 W but not exceeding 125,000 W | |
| 8504.40.95.78 | Of a capacity exceeding 125,000 W but not exceeding 1,000,000 W | |
| 8504.40.95.79 | Other | |
| 8504.40.95.80 | Other | |
| 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 | Free |
| 8504.50.80.00 | Other | Free |
| 8504.90 | Parts: | |
| 8504.90.20.00 | Printed circuit assemblies | Free |
| 8504.90.41.00 | Other | Free |
| 8504.90.65.00 | Of the goods of subheading 8504.40 or 8504.50 for telecommunication apparatus | Free |
| 8504.90.75.00 | Other | Free |
| 8504.90.96 | Other | Free |
| 8504.90.96.10 | For transformers | |
| 8504.90.96.30 | Other | |
| 8504.90.96.34 | Laminations for incorporation into stacked cores | |
| 8504.90.96.38 | Stacked cores for incorporation into transformers | |
| 8504.90.96.42 | Wound cores for incorporation into transformers | |
| 8504.90.96.46 | Other | |
| 8504.90.96.50 | Of static converters | |
| 8504.90.96.90 | Other |
Public records · unclaimed listings
U.S. manufacturers in this industry, from public records
These companies are not Fromerica members and did not write these listings: Fromerica created them from public government records and has not verified what the records say. You cannot contact them from here. Open a listing to see what the record says.
- ADVANCED FUSION SYSTEMS, LLC
- AI-TEK INSTRUMENTS, LLC
- B S T SYSTEMS, INC.
- BICRON ELECTRONICS, LLC
- BIRK MANUFACTURING, INC.
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And 22 more in the public records. See all →
Exporting this product from the U.S.?
Exports are reported with Schedule B numbers. Heading 8504 has 41 of them; the first 12 are below. Schedule B lookup →
- 8504.10.0000BALLASTS FOR DISCHARGE LAMPS OR TUBES
- 8504.21.0020LIQUID DIELECTRIC TRANSFORMERS HAVING A POWER HANDLING CAPACITY NOT EXCEEDING 50 KVA
- 8504.21.0040LIQUID DIELECTRIC TRANSFORMERS HAVING A POWER HANDLING CAPACITY EXCEEDING 50 KVA BUT NOT EXCEEDING 100 KVA
- 8504.21.0060LIQUID DIELECTRIC TRANSFORMERS HAVING A POWER HANDLING CAPACITY EXCEEDING 100 KVA BUT NOT EXCEEDING 500 KVA
- 8504.21.0080LIQUID DIELECTRIC TRANSFORMERS HAVING A POWER HANDLING CAPACITY EXCEEDING 500 KVA BUT NOT EXCEEDING 650 KVA
- 8504.22.0040LIQUID DIELECTRIC TRANSFORMERS HAVING A POWER HANDLING CAPACITY EXCEEDING 650 KVA BUT NOT EXCEEDING 2,500 KVA
- 8504.22.0080LIQUID DIELECTRIC TRANSFORMER HAVING A POWER HANDLING CAPACITY EXCEEDING 2,500 KVA BUT NOT EXCEEDING 10,000 KVA
- 8504.23.0040LIQUID DIELECTRIC TRANSFORMERS HAVING A POWER HANDLING CAPACITY EXCEEDING 10,000 KVA BUT NOT EXCEEDING 100,000 KVA
- 8504.23.0080LIQUID DIELECTRIC TRANSFORMERS HAVING A POWER HANDLING CAPACITY EXCEEDING 100,000 KVA
- 8504.31.2000TRANSFORMERS, HAVING A POWER HANDLING CAPACITY NOT EXCEEDING 1 KVA, UNRATED, NESOI
- 8504.31.4035TRANSFORMERS, HAVING A POWER HANDLING CAPACITY LESS THAN 40 VA, NESOI
- 8504.31.4065TRANSFORMERS, HAVING A POWER HANDLING CAPACITY 40 VA OR GREATER BUT LESS THAN 1 KVA, NESOI
Source: U.S. International Trade Commission, Harmonized Tariff Schedule; Schedule B: U.S. Census Bureau. Information only, not legal or customs advice; U.S. Customs and Border Protection decides the classification and the duty. Confirm with a licensed customs broker before you ship.
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