Base
HTS 8504Chapter 85

HTS 8504Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Duty Rate & Import Guide

Electrical Machinery and Equipment · 14 court cases · $2731.0M monthly imports · 100% from 1 countries · Updated daily from USITC

Duty Rates

General

Free

Special

Free

Column 2

Free

Trade Agreement Eligibility

CUSMAKORUS

Trade Intelligence

Monthly Imports

$2731.0M

2026-01

Trade Concentration

100%

from top 3 of 1 origins

Regulatory Pressure

HIGH

1 rulings — · 0 reg · 13 CIT, 1 CAFC (2 recent)

Global Rates

🇺🇸 Free

🇬🇧 United Kingdom: N/A · 🇪🇺 European Union: N/A · 🇨🇦 Canada: N/A · 🇧🇷 Brazil: N/A

Compare All →

Data compiled from USITC HTS, US Census Bureau, CBP CROSS Rulings, CourtListener, CPSC SaferProducts.gov · As of 2026-04-29 · Updates monthly

Active DisputesRecent court cases or pending regulations affect this code
Regulatory Pressure

This code has elevated regulatory activity — 1 CBP rulings (0 in last 2 years, trend: stable), 0 pending Federal Register actions, and 14 CIT/CAFC cases.

Supply Chain Risk

100% of US imports for this code come from just 1 countries. High origin concentration increases exposure to trade disruptions or tariff escalations.

High-Volume Code

This is a high-volume import code — $2731M in monthly US imports. Duty rate changes or trade remedy actions on this code have significant economic impact.

Trade Remedy

Additional Tariffs Apply

Section 301 — China Tariffs+25%

List 1 — ~$34B of Chinese goods (machinery, electronics, industrial components)

Active — 7.5%–25% additional duties on Chinese-origin goods across four tranches (Lists 1–4A), with higher 2024/2025 increases on targeted product categories.

Effective 2018-07-06

These additional tariffs apply on top of the general duty rate. View full trade remedy tracker →

Subheadings (62)

CodeDescriptionRate
8504.10.00.00Ballasts for discharge lamps or tubes3%
8504.21.00Having a power handling capacity not exceeding <il>650 kVA</il>Free
8504.21.00.20Having a power handling capacity not exceeding <il>50 kVA</il>
8504.21.00.40Having a power handling capacity exceeding <il>50 kVA</il> but not exceeding <il>100 kVA</il>
8504.21.00.60Having a power handling capacity exceeding <il>100 kVA</il> but not exceeding <il>500 kVA</il>
8504.21.00.80Having a power handling capacity exceeding <il>500 kVA</il> but not exceeding <il>650 kVA</il>
8504.22.00Having a power handling capacity exceeding <il>650 kVA</il> but not exceeding <il>10,000 kVA</il>Free
8504.22.00.40Having a power handling capacity exceeding <il>650 kVA</il> but not exceeding <il>2,500 kVA</il>
8504.22.00.80Having a power handling capacity exceeding <il>2,500 kVA</il> but not exceeding <il>10,000 kVA</il>
8504.23.00Having a power handling capacity exceeding <il>10,000 kVA</il>1.6%
8504.23.00.41Having a power handling capacity exceeding <il>10,000 kVA</il> but not exceeding <il>59,999 kVA</il>
8504.23.00.45Having a power handling capacity exceeding <il>59,999 kVA</il> but not exceeding <il>100,000 kVA</il>
8504.23.00.80Having a power handling capacity exceeding <il>100,000 kVA</il>
8504.31Having a power handling capacity not exceeding <il>1 kVA</il>:
8504.31.20.00UnratedFree
8504.31.40Having a power handling capacity less than <il>1 kVA</il>6.6%
8504.31.40.35Having a power handling capacity less than <il>40 VA</il>
8504.31.40.65Having a power handling capacity <il>40 VA</il> or greater
8504.31.60.00Having a power handling capacity of <il>1 kVA</il>1.6%
8504.32.00.00Having a power handling capacity exceeding <il>1 kVA</il> but not exceeding <il>16 kVA</il>2.4%
8504.33.00Having a power handling capacity exceeding <il>16 kVA</il> but not exceeding <il>500 kVA</il>1.6%
8504.33.00.20Having a power handling capacity exceeding <il>16 kVA</il> but not exceeding <il>50 kVA</il>
8504.33.00.40Having a power handling capacity exceeding <il>50 kVA</il> but not exceeding <il>500 kVA</il>
8504.34.00.00Having a power handling capacity exceeding <il>500 kVA</il>1.6%
8504.40Static converters:
8504.40.40.00Speed drive controllers for electric motorsFree
8504.40.60Suitable for physical incorporation into automatic data processing machines or units thereof of heading 8471Free
8504.40.60.01With a power output not exceeding <il>50 W</il>
8504.40.60.07With a power output exceeding <il>50 W</il> but not exceeding <il>150 W</il>
8504.40.60.12With a power output exceeding <il>150 W</il> but not exceeding <il>500 W</il>
8504.40.60.18Other
8504.40.70OtherFree
8504.40.70.01With a power output not exceeding <il>50 W</il>
8504.40.70.07With a power output exceeding <il>50 W</il> but not exceeding <il>150 W</il>
8504.40.70.12With a power output exceeding <il>150 W</il> but not exceeding <il>500 W</il>
8504.40.70.18Other
8504.40.85.00For telecommunication apparatusFree
8504.40.95OtherFree
8504.40.95.10With a power output not exceeding <il>50 W</il>
8504.40.95.20With a power output exceeding <il>50 W</il> but not exceeding <il>150 W</il>
8504.40.95.30With a power output exceeding <il>150 W</il> but not exceeding <il>500 W</il>
8504.40.95.40Other
8504.40.95.50Other
8504.40.95.70Inverters
8504.40.95.80Other
8504.50Other inductors:
8504.50.40.00For 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 apparatusFree
8504.50.80.00OtherFree
8504.90Parts:
8504.90.20.00Printed circuit assembliesFree
8504.90.41.00OtherFree
8504.90.65.00Of the goods of subheading 8504.40 or 8504.50 for telecommunication apparatusFree
8504.90.75.00OtherFree
8504.90.96OtherFree
8504.90.96.10For transformers
8504.90.96.30Other
8504.90.96.34Laminations for incorporation into stacked cores
8504.90.96.38Stacked cores for incorporation into transformers
8504.90.96.42Wound cores for incorporation into transformers
8504.90.96.46Other
8504.90.96.50Of static converters
8504.90.96.90Other

CBP Rulings (1)

N014005Classification

The tariff classification of a regulator & rectifier from an unspecified country

Court of International Trade & Federal Circuit (14)

View all 14+ cases on PACER →

Matching Export Code (Schedule B)

8504100000Schedule B

BALLASTS FOR DISCHARGE LAMPS OR TUBES

Census Bureau export classification matching this HTS import code.

8503.00.95.468504.10.00.00