Product classification
HS code for Power potentiometers: 8533.39
Electrical resistors, wirewound variable, including rheostats and potentiometers, for a power handling capacity exceeding 20W (excluding heating).
Classification of power potentiometers under HS 8533.39
Power potentiometers are classified under HS code 853339, which falls within Chapter 85 of the Harmonized System. This chapter covers electrical machinery and equipment. Specifically, heading 8533 is designated for electrical resistors, including rheostats and potentiometers, other than heating resistors. The classification process for these components depends on two primary factors: whether the resistor is fixed or variable, and its power handling capacity. Power potentiometers are variable resistors, and the "power" designation typically refers to those capable of handling significant electrical loads. Subheading 853339 is specifically reserved for wirewound variable resistors, which include rheostats and potentiometers, that possess a power handling capacity exceeding 20 watts. This classification is determined by the physical construction (wirewound) and the functional capacity (exceeding 20W), distinguishing them from lower-power electronic components used in signal processing or consumer electronics. The wirewound nature is a critical technical requirement for this specific code, as it allows the device to dissipate the heat generated by high-power applications without degrading the resistive element.
- Covers
- High-power industrial rheostats
- Wirewound potentiometers rated above 20W
- Motor speed control potentiometers for heavy machinery
- Heavy-duty dimming controls for stage lighting
- Variable load resistors for laboratory testing
- Also under 8533.39
- Ohmite RLS series rheostats
- Vishay Sfernice P11 series
- TE Connectivity CGS series
- Bourns 3500 series
Codes often confused with 8533.39
Common mistake. A frequent error in classification involves HS code 853331, which is for wirewound variable resistors with a power handling capacity of 20 watts or less. Importers often fail to verify the wattage rating on the technical datasheet. Another common mistake is using 853340, which covers other variable resistors that are not wirewound, such as carbon film or cermet potentiometers. Additionally, fixed power resistors are sometimes confused with this code, but they should be classified under 853329 if they exceed 20W and are not variable.
Top exporters and importers of HS 853339 (the code used for power potentiometers), 2025
In 2025, the largest exporter of HS 853339 (the code used for power potentiometers) in UN Comtrade data was the United States, with 17% of world exports; the largest importer in UN Comtrade data was Thailand, with 19% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 853339, not only power potentiometers.
Top exporters 2025 · share of world exports
- 1 United States $10M 17% of world exports
- 2 Taiwan* ~$6.4M 10% of world exports · partner records ↗
- 3 Germany $5.7M 9.3% of world exports
World total: $62M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Thailand $24M 19% of world imports
- 2 India $12M 9.3% of world imports
- 3 United States $11M 8.8% of world imports
World total: $127M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries marked * did not, so their figures add up what other countries recorded trading with them, and their exports are valued at buyers' CIF prices. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. UN Comtrade records Taiwan as "Other Asia, not elsewhere specified". Saudi Arabia's exports under that code are left out: they are far too large to be trade with Taiwan, so mostly undisclosed partners. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM codes for power potentiometers
Brazil splits HS 8533.39 into 2 NCM codes. Pick the one that matches your product:
- 8533.39.10Wirewound potentiometers, over 20 W
- 8533.39.90Other wirewound variable resistors, over 20 W
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about power potentiometers
What is the HS code for Power potentiometers?
The HS code for Power potentiometers is 853339 (Electrical resistors; wirewound variable, including rheostats and potentiometers, for a power handling capacity exceeding 20W (excluding heating)). The HS code for power potentiometers that are wirewound and have a power handling capacity exceeding 20W is 853339.
How do I classify Power potentiometers for customs?
Power potentiometers is classified under HS code 853339 — Electrical resistors; wirewound variable, including rheostats and potentiometers, for a power handling capacity exceeding 20W (excluding heating). This is a 6-digit subheading level code.
How do I distinguish between 853331 and 853339?
The distinction is based solely on the power rating; if the device is rated at 20W or less, it falls under 853331, whereas anything above 20W is classified under 853339.
Which countries are the top exporters of power potentiometers (HS 853339)?
In 2025, the top exporters of HS 853339 (the code used for power potentiometers) in UN Comtrade data were the United States ($10M, 17% of world exports), Taiwan (about $6.4M) and Germany ($5.7M). World exports came to about $62M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of power potentiometers (HS 853339)?
In 2025, the top importers of HS 853339 (the code used for power potentiometers) in UN Comtrade data were Thailand ($24M, 19% of world imports), India ($12M) and the United States ($11M). World imports came to about $127M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Power potentiometers the same in all countries?
The base HS code 853339 for Power potentiometers is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for power potentiometers in Brazil?
Brazil splits HS 853339 into 2 NCM codes, so the right one for power potentiometers depends on the product's details: 8533.39.10 (Wirewound potentiometers, over 20 W), 8533.39.90 (Other wirewound variable resistors, over 20 W).