Product classification
HS code for Rotary converter: 8502.40
Electric rotary converters.
Classification of rotary converter under HS 8502.40
A rotary converter is classified under HS code 8502.40. This classification is found in Chapter 85, which covers electrical machinery and equipment. Heading 8502 specifically includes electric generating sets and rotary converters. A rotary converter is a type of electrical machine which acts as a mechanical rectifier, inverter, or frequency converter. It combines the functions of an electric motor and a generator in a single unit with a common armature and a single magnetic field. The classification is determined by the mechanical nature of the conversion process; because the device uses rotating parts to transform electrical energy from one form to another (e.g., AC to DC), it is distinct from static conversion equipment.
- Covers
- AC to DC rotary converters
- DC to AC rotary converters
- Rotary phase converters
- Rotary frequency changers
- Combined motor-generator sets for power conversion
- Also under 8502.40
- Siemens motor-generator sets
- GE rotary converters
- ABB frequency changers
- Kato Engineering rotary converters
- Marathon Electric motor-generator
Codes often confused with 8502.40
Common mistake. The most common misclassification for rotary converters is HS code 8504.40, which covers static converters such as rectifiers, inverters, and UPS systems. The primary difference is that 8504.40 applies to solid-state or electronic devices with no moving parts, whereas 8502.40 is strictly for machines that utilize physical rotation. Another error is classifying them as standard electric motors under 8501, but since the primary function is the conversion of current or frequency rather than providing mechanical power, 8502.40 is the correct and more specific code.
Top exporters and importers of HS 850240 (the code used for rotary converter), 2025
In 2025, the largest exporter of HS 850240 (the code used for rotary converter) in UN Comtrade data was Germany, with 42% of world exports; the largest importer in UN Comtrade data was India, with 14% 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 850240, not only rotary converter.
Top exporters 2025 · share of world exports
- 1 Germany $74M 42% of world exports
- 2 United States $25M 14% of world exports
- 3 United Kingdom $17M 9.6% of world exports
World total: $177M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 India $24M 14% of world imports
- 2 Germany $21M 12% of world imports
- 3 United States $21M 12% of world imports
World total: $174M 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 that did not report are estimated from what other countries recorded trading with them. 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. 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 rotary converter
Brazil splits HS 8502.40 into 2 NCM codes. Pick the one that matches your product:
- 8502.40.10Rotary frequency converters
- 8502.40.90Other rotary converters
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about rotary converter
What is the HS code for Rotary converter?
The HS code for Rotary converter is 850240 (Electric rotary converters). The HS code for electric rotary converters is 8502.40.
How do I classify Rotary converter for customs?
Rotary converter is classified under HS code 850240 — Electric rotary converters. This is a 6-digit subheading level code.
Can a static inverter be classified under this code?
No, static inverters do not have rotating components and must be classified under HS code 8504.40.
Which countries are the top exporters of rotary converter (HS 850240)?
In 2025, the top exporters of HS 850240 (the code used for rotary converter) in UN Comtrade data were Germany ($74M, 42% of world exports), the United States ($25M) and the United Kingdom ($17M). World exports came to about $177M, 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 rotary converter (HS 850240)?
In 2025, the top importers of HS 850240 (the code used for rotary converter) in UN Comtrade data were India ($24M, 14% of world imports), Germany ($21M) and the United States ($21M). World imports came to about $174M, 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 Rotary converter the same in all countries?
The base HS code 850240 for Rotary converter 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 rotary converter in Brazil?
Brazil splits HS 850240 into 2 NCM codes, so the right one for rotary converter depends on the product's details: 8502.40.10 (Rotary frequency converters), 8502.40.90 (Other rotary converters).