Heading 8504 · Electrical transformers, static converters (for example, rectifiers) and…
8504.40.95
Electrical transformers, static converters (for example,… — Other
Duty rates
- General
- Free
- The base rate for goods from most countries.
- Special
- —
- Lower rates under trade agreements and programs, for goods that meet their rules of origin; each symbol names one.
- Column 2
- 35%
- The higher rate for the few countries without normal trade relations with the United States.
These are base rates, not what you pay. The country of origin can add extra duties (Sections 301, 232 and others), and customs fees come on top: the calculator adds up what applies to your goods, each with its source. Why the base rate is not enough
Calculate duties for this codeBase columns of the 2026 HTS Revision 22, in force from Oct. 30, 2026 (official source).
Official notices
Actions of the President, the USTR or U.S. Customs and Border Protection (CBP) that name this code.
- Aug 13, 2026 · The White House Adjusting Imports of Unmanned Aircraft Systems and Unmanned Aircraft Systems Components Into the United States
- Jul 23, 2026 · The White House Actions by the United States in the Investigations Under Section 301 of the Trade Act of 1974 of the Acts, Policies, and Practices of 60 Economies Related to the Failure of Each Economy To Impose and Effectively Enforce a Prohibition on the Importation of Goods Produced With Forced Labor
- Jul 20, 2026 · The White House Action by the United States in the Investigation Under Section 301 of the Trade Act of 1974 of Brazil's Acts, Policies, and Practices Related to Digital Trade and Electronic Payment Services; Unfair, Preferential Tariffs; Anti-Corruption Enforcement; Intellectual Property Protection; Ethanol Market Access; and Illegal Deforestation
- Jun 1, 2026 · The White House Further Adjusting the Tariff Regimes for Imports of Aluminum, Steel, and Copper Into the United States
- Apr 2, 2026 · The White House Strengthening Actions Taken To Adjust Imports of Aluminum, Steel, and Copper Into the United States
- Feb 20, 2026 · The White House Imposing a Temporary Import Surcharge To Address Fundamental International Payments Problems
- Dec 18, 2025 · USTR Implementing Certain Tariff-Related Elements of the Framework for a United States-Switzerland-Liechtenstein Agreement on Fair, Balanced, and Reciprocal Trade
- Dec 4, 2025 · USTR Implementing Certain Tariff-Related Elements of the U.S.-Korea Strategic Trade and Investment Deal
- Nov 20, 2025 · The White House Modifying the Scope of Tariffs on the Government of Brazil
- Nov 14, 2025 · The White House Modifying the Scope of the Reciprocal Tariffs With Respect to Certain Agricultural Products
Mentioned in Chapter 99
The parts of Chapter 99, in the 2026 HTS Revision 22, that list HTS 8504.40.95, a broader code that includes it, or a narrower code within it.
| U.S. note | Excerpt | Headings that refer to it |
|---|---|---|
| U.S. note 2(aa)(iv) | (iv) As provided in heading 9903.03.05, the additional duty imposed by heading 9903.03.01 shall not apply to articles the product of any country that are civil aircraft (all aircraft other than military aircraft); their engines, parts and… | 9903.03.01, 9903.03.05 |
| U.S. note 2(v)(xxii) | (xxii) As provided in heading 9903.02.76, the additional duties imposed by headings 9903.02.19, 9903.02.20, 9903.82.02 and 9903.82.04–9903.82.17 shall not apply to articles the product of the European Union that are civil aircraft (all… | 9903.01.25, 9903.01.43, 9903.01.44, 9903.01.45, 9903.01.46, 9903.01.47 and 106 more |
| U.S. note 2(v)(xxiv)(b) | (b) As provided in heading 9903.02.81, the additional duties imposed by headings 9903.02.79, 9903.02.80, 9903.82.02 and 9903.82.04–9903.82.17 shall not apply to articles the product of South Korea that are civil aircraft (all aircraft… | 9903.01.25, 9903.01.43, 9903.01.44, 9903.01.45, 9903.01.46, 9903.01.47 and 106 more |
| U.S. note 2(v)(xxv)(c) | (c) As provided in headings 9903.02.85 and 9903.02.90, the additional duties imposed by headings 9903.02.82–9903.02.83 and 9903.02.87–9903.02.88 shall not apply to articles the product of Switzerland or Liechtenstein, respectively, that… | 9903.01.25, 9903.01.43, 9903.01.44, 9903.01.45, 9903.01.46, 9903.01.47 and 107 more |
| U.S. note 2(x)(iv) | (iv) As provided in heading 9903.01.82, the additional duties imposed by heading 9903.01.77 shall not apply to articles of civil aircraft (all aircraft other than military aircraft); their engines, parts, and components; their other parts,… | 9903.01.77, 9903.01.82 |
| U.S. note 20(f) | (f) Heading 9903.88.03 applies to all products of China that are classified in the following 8-digit subheadings, except products of China granted an exclusion by the U.S. Trade Representative and provided for in (1) heading 9903.88.13 and… | 9903.88.03, 9903.88.09 |
| U.S. note 20(iii)(179) | (179) Power adapters for a weather sensor or weather station display (described in statistical reporting number | 9903.88.56 |
| U.S. note 20(m)(56) | (56) Printed circuit assemblies of the goods of subheading | 9903.88.10 |
| U.S. note 20(m)(57) | (57) Printed circuit assemblies of the goods of subheading | 9903.88.10 |
| U.S. note 20(m)(58) | (58) Printed circuit assemblies of the goods of subheading | 9903.88.10 |
| U.S. note 20(m)(59) | (59) Printed circuit assemblies of the goods of subheading | 9903.88.10 |
| U.S. note 20(oo)(33) | (33) Other static converters, rectifiers and rectifying apparatus, with ABS plastic damage resistant box, input and output voltage cables, weighing not more than 0.35 kg, measuring not more than 17 cm in length and 12 cm in width… | 9903.88.36 |
| U.S. note 20(qq)(74) | (74) Solar-powered battery chargers, each consisting of an ABS plastic housing, a solar panel charger and a 6 V or 12 V sealed lead acid battery (described in statistical reporting number | 9903.88.38 |
| U.S. note 20(ss)(37) | (37) Power supplies with a power output exceeding 150 W but not exceeding 180 W, 120 V, each measuring no more than 90 mm by 395 mm by 625 mm (described in statistical reporting number | 9903.88.40 |
| U.S. note 20(ss)(38) | (38) Power supplies, each with 120 V AC input and output, measuring not more than 485 mm by 385 mm by 260 mm, weighing not more than 15 kg, to provide not more than 660 W of power in an uninterruptible manner in the event that a normal… | 9903.88.40 |
| U.S. note 20(ss)(39) | (39) Power supplies, each with 120 V AC input and output, measuring not more than 530 mm by 355 mm by 205 mm, weighing not more than 20 kg, to provide not more than 2,000 W of power in an uninterruptible manner in the event that a normal… | 9903.88.40 |
| U.S. note 20(ss)(40) | (40) Electrical inverters (other than rectifiers, power supplies for automatic data processing equipment or for telecommunications apparatus), each measuring not more than 190 mm by 160 mm by 255 mm, weighing not more than 2.5 kg… | 9903.88.40 |
| U.S. note 20(ttt)(89)(ii)(34)(iii)(121) | (121) Power adapters for a weather sensor or weather station display (described in statistical reporting number | 9903.88.67 |
| U.S. note 20(vv)(117) | (117) Battery chargers designed to charge the batteries in electrically powered golf carts and similar utility vehicles for a voltage not exceeding 48 V, measuring no more than 20 cm in width, 30 cm in length, and 15 cm in height… | 9903.88.43 |
| U.S. note 20(vv)(118) | (118) Static converters, each with output voltage range of 10 V or more but not exceeding 26 V and a power output range of at least 5 A but not more than 240 A, weighing not more than 23 kg (described in statistical reporting number | 9903.88.43 |
| U.S. note 20(vvv)(53) | (53) Power adapters for a weather sensor or weather station display (described in statistical reporting number | 9903.88.69 |
| U.S. note 20(xx)(60) | (60) Rectifiers for charging of batteries, each measuring at least 275 mm but not more than 281 mm in length, at least 243 mm but not more than 249 mm in width and at least 102 mm but not more than 116 mm in height; weighing less than 5… | 9903.88.45 |
| U.S. note 20(xx)(61) | (61) Power adapters for a weather sensor or weather station display (described in statistical reporting number | 9903.88.45 |
| U.S. note 20(yy)(93) | (93) Power supplies capable of converting 230 V/460 W alternating current to 24 V/97 W direct current, each consisting of a printed circuit board, power supply and a heatsink, enclosed in a metal housing measuring not more than 355 mm by… | 9903.88.46 |
| U.S. note 20(yy)(94) | (94) Power supplies with a power output of at least 150 W but not more than 500 W, each measuring not more than 18 cm by 24 cm by 65 cm, weighing not more than 2.4 kg (described in statistical reporting number | 9903.88.46 |
| U.S. note 20(yy)(95) | (95) Battery chargers, operating on input voltage of at least 100 V but not more than 240 V, with power output of at least 650 W but not more than 1,425 W, with wireless control and communications (described in statistical reporting number | 9903.88.46 |
| U.S. note 35(a) | (a) As provided in heading 9903.96.01, the additional duties imposed by headings 9903.01.25, 9903.82.02 and 9903.82.04–9903.82.17 shall not apply to articles of civil aircraft (all aircraft other than military aircraft); their engines,… | 9903.96.01 |
| U.S. note 35(b) | (b) As provided in heading 9903.96.02, the additional duties imposed by headings 9903.02.72, 9903.02.73, 9903.82.02 and 9903.82.04–9903.82.17 shall not apply to articles of civil aircraft (all aircraft other than military aircraft and… | 9903.96.02 |
| U.S. note 43(c)(1) | (1) Unmanned aircraft, docking stations for unmanned aircraft or parts for such docking stations: | 9903.08.20, 9903.08.21, 9903.08.25, 9903.08.26 |
| U.S. note 50(a)(iv) | (iv) As provided in heading 9903.05.05, the additional duty imposed by heading 9903.05.01 shall not apply to articles the product of Brazil that are civil aircraft (all aircraft other than military aircraft); their engines, parts and… | 9903.05.01, 9903.05.05 |
| U.S. note 51(d) | (d) As provided in heading 9903.03.16, the additional duties imposed by headings 9903.03.12–9903.03.14 shall not apply to articles of civil aircraft (all aircraft other than military aircraft and unmanned aircraft); their engines, parts… | 9903.03.16 |
| U.S. note 52(d) | (d) As provided in heading 9903.05.88, the additional duties imposed by headings 9903.05.20–9903.05.84 shall not apply to articles that are civil aircraft (all aircraft other than military aircraft); their engines, parts and components;… | 9903.05.20, 9903.05.21, 9903.05.22, 9903.05.23, 9903.05.24, 9903.05.25 and 60 more |
Being listed is not owing a duty. A note may list goods that a measure leaves out; whether a heading applies depends on the origin, the date and the product; and the measures on all the goods of a country list no code at all. The calculator says what applies.
In the tariff
- 8504Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof
- 8504.40Static converters
- 8504.40.95OtherFree
- Rectifiers and rectifying apparatus
- Power supplies
- 8504.40.95.10With a power output not exceeding 50 W
- 8504.40.95.20With a power output exceeding 50 W but not exceeding 150 W
- 8504.40.95.30With a power output exceeding 150 W but not exceeding 500 W
- 8504.40.95.40Other
- 8504.40.95.50Other
- Inverters
- 8504.40.95.71Of a capacity not exceeding 200 W
- 8504.40.95.73Of a capacity exceeding 200 W but not exceeding 650 W
- 8504.40.95.75Of a capacity exceeding 650 W but not exceeding 20,000 W
- 8504.40.95.77Of a capacity exceeding 20,000 W but not exceeding 125,000 W
- 8504.40.95.78Of a capacity exceeding 125,000 W but not exceeding 1,000,000 W
- 8504.40.95.79Other
- 8504.40.95.80Other