Heading 8504 · Electrical transformers, static converters (for example, rectifiers) and…

8504.40

Electrical transformers, static converters (for example,… — Static converters:

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Official notices

Actions of the President, the USTR or U.S. Customs and Border Protection (CBP) that name this code.

Mentioned in Chapter 99

The parts of Chapter 99, in the 2026 HTS Revision 22, that list HTS 8504.40, a broader code that includes it, or a narrower code within it.

U.S. noteExcerptHeadings 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(b)(b) Heading 9903.88.01 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 9903.88.05…9903.88.01
U.S. note 20(ccc)(13)(13) Regenerative speed drive controllers for controlling speed of electric motors for elevators (described in statistical reporting number9903.88.50
U.S. note 20(ccc)(14)(14) Speed drive controllers for electric motors, each such controller measuring 100 mm or more but not over 130 mm in length, 40 mm or more but not over 125 mm in width and 24 mm or more but not over 85 mm in height (described in…9903.88.50
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)(175)(175) Power supplies suitable for physical incorporation into automatic data processing (ADP) machines or units thereof of heading 8471, each with a power output exceeding 500 W, measuring 148mm in length, 43 mm in width and 335 mm in…9903.88.56
U.S. note 20(iii)(176)(176) Power supplies for cable networks, that convert 120 V/60 Hz AC input to either 63 V AC or 87 V AC output, each measuring not more than 200 mm by 425 mm by 270 mm and weighing not more than 27.5 kg, containing printed circuit board…9903.88.56
U.S. note 20(iii)(177)(177) Static converters designed for wireless (inductive) charging of telecommunication apparatus (described in statistical reporting number9903.88.56
U.S. note 20(iii)(178)(178) Static converters of a kind used to charge telecommunication apparatus in cars or homes, valued not over $2 each (described in statistical reporting number9903.88.56
U.S. note 20(iii)(179)(179) Power adapters for a weather sensor or weather station display (described in statistical reporting number9903.88.56
U.S. note 20(m)(52)(52) Regenerative speed drive controllers for controlling speed of electric motors for elevators (described in statistical reporting number9903.88.10
U.S. note 20(m)(53)(53) Speed drive controllers for electric motors, each such controller measuring 100 mm or more but not over 130 mm in length, 40 mm or more but not over 125 mm in width and 24 mm or more but not over 85 mm in height (described in…9903.88.10
U.S. note 20(m)(54)(54) Speed drive controllers for electric motors, the foregoing operating at 250 A or more but not over 500 A (described in statistical reporting number9903.88.10
U.S. note 20(m)(55)(55) Variable frequency drive controllers for electric motors, each weighing more than 1 kg but not more than 11 kg (described in statistical reporting number9903.88.10
U.S. note 20(m)(56)(56) Printed circuit assemblies of the goods of subheading9903.88.10
U.S. note 20(m)(57)(57) Printed circuit assemblies of the goods of subheading9903.88.10
U.S. note 20(m)(58)(58) Printed circuit assemblies of the goods of subheading9903.88.10
U.S. note 20(m)(59)(59) Printed circuit assemblies of the goods of subheading9903.88.10
U.S. note 20(mm)(17)(17) Static converters designed for wireless (inductive) charging of telecommunication apparatus (described in statistical reporting number9903.88.34
U.S. note 20(mm)(32)(32) Static converters of a kind used to charge telecommunication apparatus in cars or homes, valued not over $2 each (described in statistical reporting number9903.88.34
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(pp)(44)(44) Wireless battery chargers for mobile phones, each in the form of a picture frame incorporating a wireless charger or a stand incorporating a wireless charger that permits the mobile phone to be charged while standing on end (described…9903.88.37
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 number9903.88.38
U.S. note 20(ss)(30)(30) 48 V rectifiers for telecommunications wireline and wireless apparatus, each with output of not less than 2,400 W but not more than 3,000 W, measuring not more than 45 mm by 105 mm by 330 mm, weighing not more than 2 kg (described in…9903.88.40
U.S. note 20(ss)(31)(31) 48 V rectifiers for telecommunications wireline and wireless apparatus, each with output of not less than 4,000 W but not more than 4,600 W, measuring not more than 165 mm by 95 mm by 305 mm, weighing not more than 4 kg (described in…9903.88.40
U.S. note 20(ss)(32)(32) 48 V rectifiers for telecommunications wireline and wireless apparatus, each with output of not more than 1,200 W output, measuring not more than 50 mm by 90 mm by 260 mm, weighing not more than 1 kg (described in statistical…9903.88.40
U.S. note 20(ss)(33)(33) Power supplies for cable networks, that convert 120 V/60 Hz AC input to either 63 V AC or 87 V AC output, each measuring not more than 200 mm by 425 mm by 270 mm and weighing not more than 27.5 kg, containing printed circuit board…9903.88.40
U.S. note 20(ss)(34)(34) Power supplies for cable networks, that converts 120 V/60 Hz AC or 230 V/50 Hz AC input to 63 V AC or 87 V AC output, each measuring not more than 220 mm by 244 mm by 200 mm and weighing not more than 12 kg (described in statistical…9903.88.40
U.S. note 20(ss)(35)(35) Power supplies for fiber optic communications equipment, that convert 120-240 V AC to 12 V DC, each measuring no more than 170 mm by 200 mm by 115 mm and having four LED indicators (described in statistical reporting number9903.88.40
U.S. note 20(ss)(36)(36) Quad output power modules with cut-outs on one side for air flow, each containing a printed circuit board and 4 LED indicators, with external dimensions measuring not more than 361 mm by 125 mm by 75 mm, each weighing not more than 1…9903.88.40
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 number9903.88.40
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)(59)(59) Regenerative speed drive controllers for controlling speed of electric motors for elevators (described in statistical reporting number9903.88.67
U.S. note 20(ttt)(60)(60) Speed drive controllers for electric motors, each such controller measuring 100 mm or more but not over 130 mm in length, 40 mm or more but not over 125 mm in width and 24 mm or more but not over 85 mm in height (described in…9903.88.67
U.S. note 20(ttt)(89)(ii)(34)(iii)(119)(119) Power supplies for cable networks, that convert 120 V/60 Hz AC input to either 63 V AC or 87 V AC output, each measuring not more than 200 mm by 425 mm by 270 mm and weighing not more than 27.5 kg, containing printed circuit board…9903.88.67
U.S. note 20(ttt)(89)(ii)(34)(iii)(120)(120) Static converters of a kind used to charge telecommunication apparatus in cars or homes, valued not over $2 each (described in statistical reporting number9903.88.67
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 number9903.88.67
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 number9903.88.43
U.S. note 20(vvv)(53)(53) Power adapters for a weather sensor or weather station display (described in statistical reporting number9903.88.69
U.S. note 20(w)(29)(29) Power supplies suitable for physical incorporation into automatic data processing (ADP) machines or units thereof of heading 8471, each with a power output exceeding 500 W, measuring 148mm in length, 43 mm in width and 335 mm in…9903.88.18
U.S. note 20(x)(55)(55) Speed drive controllers for electric motors, designed for use in vehicles using electric motors for propulsion, including but not limited to material handling equipment, golf carts, sweeper scrubbers and aerial lifts, with a value of…9903.88.19
U.S. note 20(xx)(59)(59) Power supplies for automatic data processing machines, each with a power output exceeding 50 W but not exceeding 150 W, weighing not more than 0.5 kg, measuring not more than 12.5 cm in length, not more than 5.6 cm in width and not…9903.88.45
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 number9903.88.45
U.S. note 20(yy)(91)(91) Inductive charging sleeves and base stations, put up for retail sale, containing electronic circuitry to inductively charge automatic data processing (“ADP”) machines when used together, with output power of at least 1.8 A but not…9903.88.46
U.S. note 20(yy)(92)(92) Modular power supplies for optical telecommunication apparatus, each in a rectangular metal enclosure measuring at least 96 mm but not more than 305 mm in width, and at least 40 mm but not more than 96 mm in height, weighing not more…9903.88.46
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 number9903.88.46
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 number9903.88.46
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

  1. 8504Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof
  2. 8504.40Static converters
  3. 8504.40.40.00Speed drive controllers for electric motorsFree
  4. 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
  5. 8504.40.60Suitable for physical incorporation into automatic data processing machines or units thereof of heading 8471Free
  6. 8504.40.60.01With a power output not exceeding 50 W
  7. 8504.40.60.07With a power output exceeding 50 W but not exceeding 150 W
  8. 8504.40.60.12With a power output exceeding 150 W but not exceeding 500 W
  9. 8504.40.60.18Other
  10. 8504.40.70OtherFree
  11. 8504.40.70.01With a power output not exceeding 50 W
  12. 8504.40.70.07With a power output exceeding 50 W but not exceeding 150 W
  13. 8504.40.70.12With a power output exceeding 150 W but not exceeding 500 W
  14. 8504.40.70.18Other
  15. 8504.40.85.00For telecommunication apparatusFree
  16. 8504.40.95OtherFree
  17. Rectifiers and rectifying apparatus
  18. Power supplies
  19. 8504.40.95.10With a power output not exceeding 50 W
  20. 8504.40.95.20With a power output exceeding 50 W but not exceeding 150 W
  21. 8504.40.95.30With a power output exceeding 150 W but not exceeding 500 W
  22. 8504.40.95.40Other
  23. 8504.40.95.50Other
  24. Inverters
  25. 8504.40.95.71Of a capacity not exceeding 200 W
  26. 8504.40.95.73Of a capacity exceeding 200 W but not exceeding 650 W
  27. 8504.40.95.75Of a capacity exceeding 650 W but not exceeding 20,000 W
  28. 8504.40.95.77Of a capacity exceeding 20,000 W but not exceeding 125,000 W
  29. 8504.40.95.78Of a capacity exceeding 125,000 W but not exceeding 1,000,000 W
  30. 8504.40.95.79Other
  31. 8504.40.95.80Other