8504.21.00.20
Having a power handling capacity not exceeding 50 kVA
Classification path
- Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof
- Liquid dielectric transformers
- Having a power handling capacity not exceeding 650 kVA
- Having a power handling capacity not exceeding 50 kVA
Rates of duty
- General (MFN)
- Free
- Column 2Cuba, North Korea, Russia, Belarus
- 35%
- Unit of quantity
- No., kg
Related lines in heading 8504
- 8504.10.00.00Ballasts for discharge lamps or tubes3%
- 8504.21.00.40Having a power handling capacity exceeding 50 kVA but not exceeding 100 kVAFree
- 8504.21.00.60Having a power handling capacity exceeding 100 kVA but not exceeding 500 kVAFree
- 8504.21.00.80Having a power handling capacity exceeding 500 kVA but not exceeding 650 kVAFree
- 8504.22.00.40Having a power handling capacity exceeding 650 kVA but not exceeding 2,500 kVAFree
- 8504.22.00.80Having a power handling capacity exceeding 2,500 kVA but not exceeding 10,000 kVAFree
- 8504.23.00.41Having a power handling capacity exceeding 10,000 kVA but not exceeding 59,999 kVA1.6%
- 8504.23.00.45Having a power handling capacity exceeding 59,999 kVA but not exceeding 100,000 kVA1.6%
- 8504.23.00.80Having a power handling capacity exceeding 100,000 kVA1.6%
- 8504.31.20.00Having a power handling capacity not exceeding 1 kVA / UnratedFree
- 8504.31.40.35Having a power handling capacity less than 40 VA6.6%
- 8504.31.40.65Having a power handling capacity 40 VA or greater6.6%
About heading 8504
Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof
Heading 8504 covers electrical transformers, static converters such as rectifiers, power supplies and inverters, inductors, and their parts. The heading splits first by article type: ballasts, liquid dielectric transformers, other transformers, static converters, other inductors, then parts. Within transformers and converters, the subheadings split further by power handling capacity or power output and by the end use of the goods.
Full guide to heading 8504Products in this heading
- Laptop and notebook power adapters
- USB phone chargers and AC-to-DC power supplies
- Fluorescent lamp ballasts for discharge lamps
- Pole-mounted and pad-mounted distribution transformers
- Solar or automotive power inverters
- Toroidal and ferrite core inductors
- Ferrite cores and transformer laminations sold as parts
- Speed drive controllers for electric motors
Frequently asked questions
What is the HTS code for a laptop power adapter?
A power supply suitable for physical incorporation into an automatic data processing machine is classified under 8504.40.60.01 when the power output does not exceed 50 W, at a general (MFN) rate of Free. Standalone external adapters that are not for incorporation fall under 8504.40.70.01, also at a general (MFN) rate of Free.
What is the duty on a small transformer rated under 40 VA?
Other transformers with a power handling capacity under 1 kVA and less than 40 VA are classified under 8504.31.40.35 at a general (MFN) rate of 6.6%. Units rated 40 VA or greater but under 1 kVA go to 8504.31.40.65, also at 6.6%.
How do I classify a power inverter?
Inverters fall in the residual static converter group and are split by capacity: 8504.40.95.71 covers inverters of a capacity not exceeding 200 W and 8504.40.95.75 covers those exceeding 650 W but not exceeding 20,000 W, both at a general (MFN) rate of Free. Larger units use 8504.40.95.77 or 8504.40.95.78, also Free.
Source: USITC Harmonized Tariff Schedule, retrieved October 21, 2026.