Product classification
HS code for Current clamps: 9030.90
Instruments, apparatus for measuring, checking electrical quantities, not meters of heading no. 9028, parts and accessories, for measuring or detecting alpha, beta, gamma, x-ray, cosmic and other radiations.
Classification of current clamps under HS 9030.90
Current clamps, when classified under HS code 9030.90, are treated as parts or accessories for instruments and apparatus used for measuring or checking electrical quantities. Heading 9030 is dedicated to a wide range of electrical measuring tools, including oscilloscopes and spectrum analyzers. Subheading 9030.90 specifically captures the components that enhance or enable the functionality of these primary instruments. Current clamps act as transducers that allow for the measurement of current in a conductor without physical contact, converting the magnetic field around the wire into a measurable signal. Because they are often sold as attachments for multimeters or dedicated power analyzers, they fit the definition of "parts and accessories." The classification relies on the fact that the clamp itself is an auxiliary component designed to work in conjunction with a base measuring unit. If the clamp is integrated into a complete, standalone handheld meter with its own display, the classification might shift to 9030.31 or 9030.33, but as a modular accessory, 9030.90 is the standard designation.
- Covers
- Current clamp probes
- AC/DC current transducers
- Flexible current sensors (Rogowski coils)
- Clamp-on adapters for multimeters
- Split-core current transformers for testing
- Also under 9030.90
- Mirion Technologies RDS-30
- Ludlum Measurements Model 3
- Thermo Scientific FH 40 G
- Canberra Osprey Digital MCA
Codes often confused with 9030.90
Common mistake. Current clamps are often misclassified under 9030.31 (multimeters) or 9030.33 (other instruments for measuring voltage/current). This occurs when the clamp is a standalone meter rather than an accessory. Another common error is using 8544 for the cables attached to the clamps; however, as part of a measuring instrument, the entire assembly remains in Chapter 90. Some may also mistakenly use 8504.40 for static converters if they view the clamp solely as a transformer.
Top exporters and importers of HS 903090 (the code used for current clamps), 2025
In 2025, the largest exporter of HS 903090 (the code used for current clamps) in UN Comtrade data was Malaysia, with 21% of world exports; the largest importer in UN Comtrade data was Taiwan, with about 16% 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 903090, not only current clamps.
Top exporters 2025 · share of world exports
- 1 Malaysia $2.5B 21% of world exports
- 2 Japan $1.9B 16% of world exports
- 3 United States $1.5B 13% of world exports
World total: $11.8B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Taiwan* ~$1.8B 16% of world imports · partner records ↗
- 2 United States $1.2B 11% of world imports
- 3 South Korea $1.2B 11% of world imports
World total: $11.1B 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 current clamps
Brazil splits HS 9030.90 into 2 NCM codes. Pick the one that matches your product:
- 9030.90.10Parts and accessories, ionising radiation meters
- 9030.90.90Parts and accessories, electrical test instruments
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about current clamps
What is the HS code for Current clamps?
The HS code for Current clamps is 903090 (Instruments, apparatus for measuring, checking electrical quantities, not meters of heading no. 9028; parts and accessories, for measuring or detecting alpha, beta, gamma, x-ray, cosmic and other radiations). The HS code for current clamps as accessories is 9030.90.
How do I classify Current clamps for customs?
Current clamps is classified under HS code 903090 — Instruments, apparatus for measuring, checking electrical quantities, not meters of heading no. 9028; parts and accessories, for measuring or detecting alpha, beta, gamma, x-ray, cosmic and other radiations. This is a 6-digit subheading level code.
Is a standalone clamp meter classified here?
No, a standalone digital clamp meter that displays readings is typically classified under 9030.31 (if it is a multimeter) or 9030.33.
Which countries are the top exporters of current clamps (HS 903090)?
In 2025, the top exporters of HS 903090 (the code used for current clamps) in UN Comtrade data were Malaysia ($2.5B, 21% of world exports), Japan ($1.9B) and the United States ($1.5B). World exports came to about $11.8B, 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 current clamps (HS 903090)?
In 2025, the top importers of HS 903090 (the code used for current clamps) in UN Comtrade data were Taiwan (about $1.8B, 16% of world imports), the United States ($1.2B) and South Korea ($1.2B). World imports came to about $11.1B, 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 Current clamps the same in all countries?
The base HS code 903090 for Current clamps 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 current clamps in Brazil?
Brazil splits HS 903090 into 2 NCM codes, so the right one for current clamps depends on the product's details: 9030.90.10 (Parts and accessories, ionising radiation meters), 9030.90.90 (Parts and accessories, electrical test instruments).