# United States tariff lines under HS 8533.40

> The United States tariff splits HS 8533.40 (other variable resistors, including rheostats and potentiometers) into 5 national lines: 8533.40.40.00 (metal oxide varistors), 8533.40.80.40 (rheostat and resistor type motor starters and controllers), 8533.40.80.50 (cermet), 8533.40.80.60 (metal glaze) and 1 other. Every United States line under 8533.40 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/853340
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) / [8533.40](https://border.bot/countries/united-states/hs-codes/853340)

## Key facts

- HS subheading: [8533.40](https://border.bot/hs-codes/853340)
- Duty (MFN): Free
- National lines: 5
- 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 8533.40

The United States tariff splits HS 8533.40 (other variable resistors, including rheostats and potentiometers) into 5 national lines: 8533.40.40.00 (metal oxide varistors), 8533.40.80.40 (rheostat and resistor type motor starters and controllers), 8533.40.80.50 (cermet), 8533.40.80.60 (metal glaze) and 1 other.

Every United States line under 8533.40 is free of general (MFN) duty.

- [8533.40.40.00](https://border.bot/countries/united-states/hs-codes/8533404000) Other variable resistors, including rheostats and potentiometers, Metal oxide varistors. Duty (MFN): free
- [8533.40.80.40](https://border.bot/countries/united-states/hs-codes/8533408040) Other variable resistors, including rheostats and potentiometers, Other, Rheostat and resistor type motor starters and controllers. Duty (MFN): free
- [8533.40.80.50](https://border.bot/countries/united-states/hs-codes/8533408050) Other variable resistors, including rheostats and potentiometers, Other, Other, Cermet. Duty (MFN): free
- [8533.40.80.60](https://border.bot/countries/united-states/hs-codes/8533408060) Other variable resistors, including rheostats and potentiometers, Other, Other, Metal glaze. Duty (MFN): free
- [8533.40.80.70](https://border.bot/countries/united-states/hs-codes/8533408070) Other variable resistors, including rheostats and potentiometers, Other, Other, Other. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 8533.40 yet.

- [The Harmonized System text for 8533.40](https://border.bot/hs-codes/853340)

- Previous subheading: [8533.39](https://border.bot/countries/united-states/hs-codes/853339) Electrical resistors (including rheostats and potentiometers), other than heating resistors; parts thereof
- Next subheading: [8533.90](https://border.bot/countries/united-states/hs-codes/853390) Parts

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 8533.40?

The United States tariff splits HS 8533.40 (other variable resistors, including rheostats and potentiometers) into 5 national lines: 8533.40.40.00 (metal oxide varistors), 8533.40.80.40 (rheostat and resistor type motor starters and controllers), 8533.40.80.50 (cermet), 8533.40.80.60 (metal glaze) and 1 other.

### What is the duty on HS 8533.40 in the United States?

Every United States line under 8533.40 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/853340.json