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HS Code 8504.40 : Static converters

The 6-digit Harmonized System (HS) code for static converters is 8504.40. Under the 2026 United States (USITC HTS), the representative MFN general duty rate is Free [USITC HTS Tariff Schedule 2026].

Chapter

Ch 85

Heading

8504

Subheading

8504.40

US MFN Duty

Free

MODULE 3: SIGNATURE A: HS DECODE VISUAL HIERARCHY

Chapter 85

Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof

Heading 8504

8504

Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof

Subheading .40

.40

Static converters

MODULE 4: SIGNATURE B: TARIFF MATRIX

Import Duty Rates by Destination

United States (USITC HTS 2026)

8504.40

Representative General Duty

Free

Verified July 2026 · USITC Source

MODULE 5: US IMPORT DUTY & FEE BREAKDOWN (LANDED COST STACK)

Base Customs Duty

Free

MFN Rate [USITC]

Merchandise Processing Fee (MPF)

0.3464%

Min $32.71 / Max $634.62 [19 CFR 24.23]

Harbor Maintenance Fee (HMF)

0.125%

Ocean Cargo [19 CFR 24.24]

Federal Import VAT / GST

0.00%

US Has NO Federal VAT

Notice: Duty rates and trade remedies change frequently (Section 301, Section 232, anti-dumping orders, de minimis thresholds). Duty calculations are estimates for informational purposes only. Always verify exact rates with U.S. Customs and Border Protection (CBP) or a licensed customs broker prior to import.

TRACK THIS HS CODE

Get Real-Time Tariff & Trade Remedy Change Alerts for HS 8504.40

Receive an automated email notification whenever USITC or CBP publishes duty rate adjustments or customs notices for 8504.40.

MODULE 6: Mandatory Customs Entry Document Matrix

Rule-Derived Customs Entry Package Checklist

UNIVERSAL DOCUMENT

Commercial Invoice

Itemized description, currency, Incoterms, seller/buyer details, and country of origin.

UNIVERSAL DOCUMENT

Packing List & Bill of Lading

Gross/net weight, container/seal numbers, piece count, and transport B/L or Air Waybill.

AGENCY-CONDITIONAL (PGA)

FDA Prior Notice / USDA Phytosanitary Cert

Rule-derived from verified PGA flag: Mandatory prior notice filing and health certificate.

MODULE 7: Regulatory Compliance & Partner Government Agency (PGA) Flags

ACE PGA Message-Set Flags: FCC (FCC): FCC Equipment Authorization Form 740 (RF Devices)

Official ACE program code: ACE/PGA [FDA 21 CFR 1.276].

MODULE 8: Trade Remedies (Section 301, Section 232, AD/CVD)

China Section 301 Tariff Status

7.5% – 25% Additional Duty (China Origin)

Section 232 Steel/Aluminum Status

Exempt (Non-Metal Commodity)

EU CBAM Carbon Alert

Not in Scope

MODULE 9: Free Trade Agreements (FTA) & Rules of Origin (RoO)

Browse all preferential trade calculators & compliance tools in our Customs Tools Hub ↗.

Agreement Code	Trade Agreement / Program	Preferential Rate	Rules of Origin (RoO) Requirement
P	United States-Mexico-Canada Agreement (USMCA)	Free	Must meet USMCA Regional Value Content (RVC) or tariff shift rules.
KR	U.S.-Korea Free Trade Agreement (KORUS)	Free	Direct shipment from South Korea with KORUS Certificate of Origin.
AU	U.S.-Australia Free Trade Agreement	Free	Wholly obtained or tariff shift rule under US-Australia FTA.
A / D	GSP / African Growth & Opportunity Act (AGOA)	Free	35% local value-add requirement for beneficiary country origin.

MODULE 10: Logistics, Freight & Transport Specifications

Standard 20ft Container

~28 CBM / 28,000 kg Payload

Standard 40ft High-Cube

~68 CBM / 28,600 kg Payload

Stowage Factor & Handling

Standard commercial packaging for Static converters

MODULE 11: Official CBP CROSS Binding Classification Rulings

Ruling #	Subject / Product Description	HTS Code	Ruling Date	Precedent Link
K81516	The tariff classification of a Digital Camera Accessory Kit from China	8504.40.9550	2003-12-16	View Precedent K81516 →
H287055	Application for Further Review of Protest No. 3901-16-100021; Tariff classification of motor control boards and electronic speed controllers for remote-controlled vehicles	8504.40.40	2023-04-05	View Precedent H287055 →
N164097	The tariff classification of a portable power pack with lithium-ion rechargeable battery from Germany	8504.40.9580	2011-06-02	View Precedent N164097 →
N305640	The tariff classification of battery chargers from China	8504.40.9550	2019-08-29	View Precedent N305640 →
N270843	The tariff classification of a power conditioning system from South Korea	8504.40.9580	2015-12-15	View Precedent N270843 →
L80190	The tariff classification of an emergency power backup device (Model JM-EP907) from Taiwan	8504.40.9550	2004-11-04	View Precedent L80190 →
B86544	The tariff classification of LET Power Supply Unit and a RST Power Supply Unit from China	8504.40.8500	1997-07-10	View Precedent B86544 →

US National HTS Tariff Lines (8504.40)

HTS Code	Description	General Rate	Special (FTA) Rate	Column 2 Rate	Unit
8504.40	Static converters	Free	Free	Rate on request	—
8504.40.40.00	Static converters, Speed drive controllers for electric motors	Free	Free	35%	No.
8504.40.60	Static converters, 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, Suitable for physical incorporation into automatic data processing machines or units thereof of heading 8471	Free	Free	35%	—
8504.40.60.01	Static converters, 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, Suitable for physical incorporation into automatic data processing machines or units thereof of heading 8471, With a power output not exceeding 50 W	Free	Free	Rate on request	No.
8504.40.60.07	Static converters, 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, Suitable for physical incorporation into automatic data processing machines or units thereof of heading 8471, With a power output exceeding 50 W but not exceeding 150 W	Free	Free	Rate on request	No.
8504.40.60.12	Static converters, 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, Suitable for physical incorporation into automatic data processing machines or units thereof of heading 8471, With a power output exceeding 150 W but not exceeding 500 W	Free	Free	Rate on request	No.
8504.40.60.18	Static converters, 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, Suitable for physical incorporation into automatic data processing machines or units thereof of heading 8471, Other	Free	Free	Rate on request	No.
8504.40.70	Static converters, 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, Other	Free	Free	35%	—
8504.40.70.01	Static converters, 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, Other, With a power output not exceeding 50 W	Free	Free	Rate on request	No.
8504.40.70.07	Static converters, 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, Other, With a power output exceeding 50 W but not exceeding 150 W	Free	Free	Rate on request	No.
8504.40.70.12	Static converters, 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, Other, With a power output exceeding 150 W but not exceeding 500 W	Free	Free	Rate on request	No.
8504.40.70.18	Static converters, 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, Other, Other	Free	Free	Rate on request	No.
8504.40.85.00	Static converters, For telecommunication apparatus	Free	Free	35%	No.
8504.40.95	Static converters, Other	Free	Free	35%	—
8504.40.95.10	Static converters, Other, Rectifiers and rectifying apparatus, Power supplies, With a power output not exceeding 50 W	Free	Free	Rate on request	No.
8504.40.95.20	Static converters, Other, Rectifiers and rectifying apparatus, Power supplies, With a power output exceeding 50 W but not exceeding 150 W	Free	Free	Rate on request	No.
8504.40.95.30	Static converters, Other, Rectifiers and rectifying apparatus, Power supplies, With a power output exceeding 150 W but not exceeding 500 W	Free	Free	Rate on request	No.
8504.40.95.40	Static converters, Other, Rectifiers and rectifying apparatus, Power supplies, Other	Free	Free	Rate on request	No.
8504.40.95.50	Static converters, Other, Rectifiers and rectifying apparatus, Other	Free	Free	Rate on request	No.
8504.40.95.71	Static converters, Other, Inverters, Of a capacity not exceeding 200 W	Free	Free	Rate on request	No.
8504.40.95.73	Static converters, Other, Inverters, Of a capacity exceeding 200 W but not exceeding 650 W	Free	Free	Rate on request	No.
8504.40.95.75	Static converters, Other, Inverters, Of a capacity exceeding 650 W but not exceeding 20,000 W	Free	Free	Rate on request	No.
8504.40.95.77	Static converters, Other, Inverters, Of a capacity exceeding 20,000 W but not exceeding 125,000 W	Free	Free	Rate on request	No.
8504.40.95.78	Static converters, Other, Inverters, Of a capacity exceeding 125,000 W but not exceeding 1,000,000 W	Free	Free	Rate on request	No.
8504.40.95.79	Static converters, Other, Inverters, Other	Free	Free	Rate on request	No.
8504.40.95.80	Static converters, Other, Other	Free	Free	Rate on request	No.

US 10-Digit Statistical HTS Breakout (8504.40)

23 Declarable Lines · USITC 2026

⚠️ Section 301 (China) Additional Tariff Alert Heading 9903.88.01, 9903.88.03, 9903.88.69

If imported from China, merchandise under this HTS line carries an additional Section 301 tariff (see HTS heading 9903.88.01, 9903.88.03, 9903.88.69). Applicable Section 301 rates depend on country of origin — verify exact rate and exemptions at hts.usitc.gov.

10-Digit HTS Code	Statistical Description	General MFN Rate	FTA / Special Rate	Unit
8504.40.40.00	Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: Speed drive controllers for electric motors	Free	Base MFN	No.
8504.40.60.01	Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: 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: Suitable for physical incorporation into automatic data processing machines or units thereof of heading 8471 With a power output not exceeding 50 W	Free	Base MFN	No.
8504.40.60.07	Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: 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: Suitable for physical incorporation into automatic data processing machines or units thereof of heading 8471 With a power output exceeding 50 W but not exceeding 150 W	Free	Base MFN	No.
8504.40.60.12	Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: 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: Suitable for physical incorporation into automatic data processing machines or units thereof of heading 8471 With a power output exceeding 150 W but not exceeding 500 W	Free	Base MFN	No.
8504.40.60.18	Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: 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: Suitable for physical incorporation into automatic data processing machines or units thereof of heading 8471 Other	Free	Base MFN	No.
8504.40.70.01	Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: 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: Other With a power output not exceeding 50 W	Free	Base MFN	No.
8504.40.70.07	Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: 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: Other With a power output exceeding 50 W but not exceeding 150 W	Free	Base MFN	No.
8504.40.70.12	Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: 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: Other With a power output exceeding 150 W but not exceeding 500 W	Free	Base MFN	No.
8504.40.70.18	Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: 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: Other Other	Free	Base MFN	No.
8504.40.85.00	Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: For telecommunication apparatus	Free	Base MFN	No.
8504.40.95	Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: Other	Free	Base MFN	—
8504.40.95.10	Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: Other Rectifiers and rectifying apparatus: Power supplies: With a power output not exceeding 50 W	Free	Base MFN	No.
8504.40.95.20	Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: Other Rectifiers and rectifying apparatus: Power supplies: With a power output exceeding 50 W but not exceeding 150 W	Free	Base MFN	No.
8504.40.95.30	Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: Other Rectifiers and rectifying apparatus: Power supplies: With a power output exceeding 150 W but not exceeding 500 W	Free	Base MFN	No.
8504.40.95.40	Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: Other Rectifiers and rectifying apparatus: Power supplies: Other	Free	Base MFN	No.
8504.40.95.50	Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: Other Rectifiers and rectifying apparatus: Other	Free	Base MFN	No.
8504.40.95.71	Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: Other Inverters: Of a capacity not exceeding 200 W	Free	Base MFN	No.
8504.40.95.73	Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: Other Inverters: Of a capacity exceeding 200 W but not exceeding 650 W	Free	Base MFN	No.
8504.40.95.75	Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: Other Inverters: Of a capacity exceeding 650 W but not exceeding 20,000 W	Free	Base MFN	No.
8504.40.95.77	Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: Other Inverters: Of a capacity exceeding 20,000 W but not exceeding 125,000 W	Free	Base MFN	No.
8504.40.95.78	Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: Other Inverters: Of a capacity exceeding 125,000 W but not exceeding 1,000,000 W	Free	Base MFN	No.
8504.40.95.79	Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: Other Inverters: Other	Free	Base MFN	No.
8504.40.95.80	Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Static converters: Other Other	Free	Base MFN	No.

MODULE 12: Candidate Subheadings & Related Codes

Related HS Code	Heading Category	Action
8504.10	Subheading under Heading 8504	HS 8504.10 undefined Duty & Entry Rules →
8504.21	Subheading under Heading 8504	HS 8504.21 undefined Duty & Entry Rules →
8504.22	Subheading under Heading 8504	HS 8504.22 undefined Duty & Entry Rules →
8504.23	Subheading under Heading 8504	HS 8504.23 undefined Duty & Entry Rules →

MODULE 13: Industry Classification & Crosswalk Mesh (NAICS & Schedule B)

U.S. Census NAICS Code

335314 : Electrical Equipment Manufacturing

U.S. Census Schedule B (Exports)

8504.40.4000 : SPEED DRIVE CONTROLLERS FOR ELECTRIC MOTORS

Official Primary Sources & Authority References

USITC HTS Chapter 85 Tariff Schedule (2026) ↗

Official U.S. 10-digit tariff lines and general duty rates for Static converters.

CBP CROSS Ruling Database (8504.40) ↗

Binding customs classification precedents for Heading 8504.

MODULE 14: Frequently Asked Questions (FAQ) & Operational Guide

What is the 6-digit WCO tariff classification and United States (USITC HTS) general duty for Static converters?

Under WCO Harmonized System 2022 and United States (USITC HTS), Static converters is classified under HS 8504.40 (Heading 8504, Chapter 85). The representative US MFN general duty rate is Free.

How is HS 8504.40 distinguished within Heading 8504 (Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof)?

Heading 8504 covers Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof. Subheading 8504.40 specifically isolates Static converters. Importers must verify whether physical characteristics, processing state, or composition require alternative subheadings under Heading 8504.

What are the primary candidate subheadings related to HS 8504.40?

Related subheadings under Heading 8504 include 8504.10, 8504.21, 8504.22, 8504.23, 8504.31, 8504.32, 8504.33, 8504.34. Classification depends on processing stage, decaffeination, purity, or material form.

What mandatory commercial entry documents are required to import Static converters?

Commercial Invoice (detailing Incoterms, currency, and origin), Packing List, Bill of Lading (or Air Waybill), CBP Form 7501 Entry Summary, and a continuous customs bond are required for formal entries.

Can goods under HS 8504.40 enter duty-free under USMCA or Free Trade Agreements?

Yes. Eligible goods originating in Mexico, Canada, South Korea, or Australia enter duty-free under preference SPI codes (P, KR, AU) provided they satisfy Regional Value Content (RVC) or tariff-shift rules with a valid Certificate of Origin.

What is the US formal entry threshold for shipments of Static converters?

Commercial shipments of Static converters with a customs value exceeding $2,500 USD require formal customs entry (CBP Form 7501) and a continuous entry bond. Informal entry applies to lower values.

How can an importer obtain a binding CBP classification ruling for HS 8504.40?

Importers may submit an e-Ruling request under 19 CFR Part 177 to CBP National Commodity Specialist Division (NCSD) to obtain a legally binding tariff classification ruling prior to importation.

What U.S. Census NAICS industry code corresponds to HS 8504.40?

HS 8504.40 maps to NAICS code 335314 (Electrical Equipment Manufacturing) under official U.S. Census Bureau trade concordance tables.

Does the United States assess federal VAT or GST on imports of HS 8504.40?

No. The United States does NOT charge a federal Value-Added Tax (VAT) or Goods and Services Tax (GST) on imports. Importers pay customs duty + MPF + HMF (if ocean freight).

How are Merchandise Processing Fee (MPF) and Harbor Maintenance Fee (HMF) calculated?

MPF is assessed at 0.3464% of entered value (min $32.71, max $634.62 per entry). HMF is assessed at 0.125% on ocean freight shipments entering US ports.

What is the Section 321 de minimis duty-free threshold for HS 8504.40?

Under Section 321 (19 U.S.C. 1321), eligible shipments valued at $800 USD or less imported by one person on one day enter duty-free and tax-free.

What U.S. Customs bond requirements apply to commercial entries under HS 8504.40?

Formal entries with customs value exceeding $2,500 USD require a continuous customs entry bond (CBP Form 301) to guarantee payment of duties, taxes, and fees.

What Importer Security Filing (ISF 10+2) rules apply to ocean imports of HS 8504.40?

Ocean container shipments bound for US ports require electronic ISF 10+2 submission via ACE at least 24 hours before loading at foreign ports.

How do USMCA preference rules apply to commercial imports under HS 8504.40?

Qualifying originating goods from Canada or Mexico meeting USMCA tariff-shift or Regional Value Content (RVC) rules enter duty-free under SPI code 'P'.

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