# United States tariff lines under HS 8504.40

> The United States tariff splits HS 8504.40 (static converters) into 22 national lines: 8504.40.40.00 (speed drive controllers for electric motors), 8504.40.60.01 (with a power output not exceeding 50 W), 8504.40.60.07 (with a power output exceeding 50 W but not exceeding 150 W), 8504.40.60.12 (with a power output exceeding 150 W but not exceeding 500 W) and 18 others. Every United States line under 8504.40 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/850440
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 85](https://border.bot/countries/united-states/hs-codes/85) / [8504.40](https://border.bot/countries/united-states/hs-codes/850440)

## Key facts

- HS subheading: [8504.40](https://border.bot/hs-codes/850440)
- Duty (MFN): Free
- National lines: 22
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 85: Electrical machinery and equipment and parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles

## United States lines under 8504.40

The United States tariff splits HS 8504.40 (static converters) into 22 national lines: 8504.40.40.00 (speed drive controllers for electric motors), 8504.40.60.01 (with a power output not exceeding 50 W), 8504.40.60.07 (with a power output exceeding 50 W but not exceeding 150 W), 8504.40.60.12 (with a power output exceeding 150 W but not exceeding 500 W) and 18 others.

Every United States line under 8504.40 is free of general (MFN) duty.

- [8504.40.40.00](https://border.bot/countries/united-states/hs-codes/8504404000) Static converters, Speed drive controllers for electric motors. Duty (MFN): free
- [8504.40.60.01](https://border.bot/countries/united-states/hs-codes/8504406001) 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. Duty (MFN): free
- [8504.40.60.07](https://border.bot/countries/united-states/hs-codes/8504406007) 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. Duty (MFN): free
- [8504.40.60.12](https://border.bot/countries/united-states/hs-codes/8504406012) 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. Duty (MFN): free
- [8504.40.60.18](https://border.bot/countries/united-states/hs-codes/8504406018) 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. Duty (MFN): free
- [8504.40.70.01](https://border.bot/countries/united-states/hs-codes/8504407001) 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. Duty (MFN): free
- [8504.40.70.07](https://border.bot/countries/united-states/hs-codes/8504407007) 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. Duty (MFN): free
- [8504.40.70.12](https://border.bot/countries/united-states/hs-codes/8504407012) 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. Duty (MFN): free
- [8504.40.70.18](https://border.bot/countries/united-states/hs-codes/8504407018) 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. Duty (MFN): free
- [8504.40.85.00](https://border.bot/countries/united-states/hs-codes/8504408500) Static converters, For telecommunication apparatus. Duty (MFN): free
- [8504.40.95.10](https://border.bot/countries/united-states/hs-codes/8504409510) Static converters, Other, Rectifiers and rectifying apparatus, Power supplies, With a power output not exceeding 50 W. Duty (MFN): free
- [8504.40.95.20](https://border.bot/countries/united-states/hs-codes/8504409520) Static converters, Other, Rectifiers and rectifying apparatus, Power supplies, With a power output exceeding 50 W but not exceeding 150 W. Duty (MFN): free
- [8504.40.95.30](https://border.bot/countries/united-states/hs-codes/8504409530) Static converters, Other, Rectifiers and rectifying apparatus, Power supplies, With a power output exceeding 150 W but not exceeding 500 W. Duty (MFN): free
- [8504.40.95.40](https://border.bot/countries/united-states/hs-codes/8504409540) Static converters, Other, Rectifiers and rectifying apparatus, Power supplies, Other. Duty (MFN): free
- [8504.40.95.50](https://border.bot/countries/united-states/hs-codes/8504409550) Static converters, Other, Rectifiers and rectifying apparatus, Other. Duty (MFN): free
- [8504.40.95.71](https://border.bot/countries/united-states/hs-codes/8504409571) Static converters, Other, Inverters, Of a capacity not exceeding 200 W. Duty (MFN): free
- [8504.40.95.73](https://border.bot/countries/united-states/hs-codes/8504409573) Static converters, Other, Inverters, Of a capacity exceeding 200 W but not exceeding 650 W. Duty (MFN): free
- [8504.40.95.75](https://border.bot/countries/united-states/hs-codes/8504409575) Static converters, Other, Inverters, Of a capacity exceeding 650 W but not exceeding 20,000 W. Duty (MFN): free
- [8504.40.95.77](https://border.bot/countries/united-states/hs-codes/8504409577) Static converters, Other, Inverters, Of a capacity exceeding 20,000 W but not exceeding 125,000 W. Duty (MFN): free
- [8504.40.95.78](https://border.bot/countries/united-states/hs-codes/8504409578) Static converters, Other, Inverters, Of a capacity exceeding 125,000 W but not exceeding 1,000,000 W. Duty (MFN): free
- [8504.40.95.79](https://border.bot/countries/united-states/hs-codes/8504409579) Static converters, Other, Inverters, Other. Duty (MFN): free
- [8504.40.95.80](https://border.bot/countries/united-states/hs-codes/8504409580) Static converters, Other, Other. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 8504.40 yet.

- [The Harmonized System text for 8504.40](https://border.bot/hs-codes/850440)

- Previous subheading: [8504.34](https://border.bot/countries/united-states/hs-codes/850434) Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof
- Next subheading: [8504.50](https://border.bot/countries/united-states/hs-codes/850450) Other inductors

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 8504.40?

The United States tariff splits HS 8504.40 (static converters) into 22 national lines: 8504.40.40.00 (speed drive controllers for electric motors), 8504.40.60.01 (with a power output not exceeding 50 W), 8504.40.60.07 (with a power output exceeding 50 W but not exceeding 150 W), 8504.40.60.12 (with a power output exceeding 150 W but not exceeding 500 W) and 18 others.

### What is the duty on HS 8504.40 in the United States?

Every United States line under 8504.40 is free of general (MFN) duty.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/850440.json