Product classification

HS code for Rectifier: 8504.40

Electrical static converters.

Classification of rectifier under HS 8504.40

Rectifiers are classified under HS code 8504.40 as electrical static converters. Heading 8504 covers electrical transformers, static converters (for example, rectifiers), and inductors. A rectifier is a device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction. This process is known as rectification. The term "static" in the HS description refers to the fact that the conversion is performed by electronic components (such as diodes, thyristors, or transistors) without moving parts, as opposed to rotary converters which use mechanical motion. This classification applies to individual rectifying units, bridge rectifiers, and power supply units that incorporate rectifying circuitry to provide DC power to electronic equipment. The classification is based on the function of the device as a converter of electrical energy. Under GRI 1, the specific mention of "static converters" in heading 8504 makes 8504.40 the primary code for these devices. This includes both industrial-scale rectifiers and small consumer electronics power adapters that perform AC-to-DC conversion.

Covers
  • Diode rectifiers
  • Bridge rectifiers
  • AC/DC adapters (power supplies)
  • Silicon Controlled Rectifiers (SCRs) when mounted in a module
  • Inverters (which are also static converters)
  • Battery chargers (classified as static converters)
Also under 8504.40
  • Victron Energy MultiPlus
  • Schneider Electric Conext
  • Delta Electronics power supplies
  • Tesla EV inverters
  • APC UPS systems

Codes often confused with 8504.40

Common mistake. Rectifiers are often misclassified under HS code 8541.10, which covers individual diodes. While a rectifier is made of diodes, a completed rectifying circuit or module is a static converter under 8504.40. Another common error is using HS code 8504.31 for transformers. While many rectifiers include a transformer to step down voltage, the conversion from AC to DC makes the entire unit a static converter. Additionally, voltage regulators are sometimes confused with rectifiers but are classified under 9032.89 or 8511.80 depending on their application.

8541.10Electrical apparatus; diodes, other than photosensitive or light-emitting diodes (LED)8504.31Electrical transformers; n.e.c. in item no. 8504.2, having a power handling capacity not exceeding 1kVA9032.89Regulating or controlling instruments and apparatus; automatic, other than hydraulic or pneumatic8511.80Ignition or starting equipment; n.e.c. in heading no. 8511, of a kind used for spark or compression-ignition internal combustion engines

Top exporters and importers of HS 850440 (the code used for rectifier), 2025

In 2025, the largest exporter of HS 850440 (the code used for rectifier) in UN Comtrade data was China, with 31% of world exports; the largest importer in UN Comtrade data was the United States, with 17% 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 850440, not only rectifier.

Top exporters 2025 · share of world exports

  1. 1 China $34.5B
  2. 2 Germany $9.3B
  3. 3 United States $6.2B

World total: $109.6B Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 United States $18.2B
  2. 2 Germany $9.7B
  3. 3 China $6.3B

World total: $105.1B 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 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 rectifier

Brazil splits HS 8504.40 into 9 NCM codes. Pick the one that matches your product:

Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.

Questions about rectifier

What is the HS code for Rectifier?

The HS code for Rectifier is 850440 (Electrical static converters). The HS code for a rectifier is 8504.40.

How do I classify Rectifier for customs?

Rectifier is classified under HS code 850440 — Electrical static converters. This is a 6-digit subheading level code.

Is a battery charger classified as a rectifier?

Yes, battery chargers are classified under HS code 8504.40 because they function as static converters, converting AC mains power into the DC power required to charge a battery.

Which countries are the top exporters of rectifier (HS 850440)?

In 2025, the top exporters of HS 850440 (the code used for rectifier) in UN Comtrade data were China ($34.5B, 31% of world exports), Germany ($9.3B) and the United States ($6.2B). World exports came to about $109.6B, 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 rectifier (HS 850440)?

In 2025, the top importers of HS 850440 (the code used for rectifier) in UN Comtrade data were the United States ($18.2B, 17% of world imports), Germany ($9.7B) and China ($6.3B). World imports came to about $105.1B, 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 Rectifier the same in all countries?

The base HS code 850440 for Rectifier 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 rectifier in Brazil?

Brazil splits HS 850440 into 9 NCM codes, so the right one for rectifier depends on the product's details: 8504.40.10 (Accumulator (battery) chargers), 8504.40.21 (Crystal (semiconductor) rectifiers), 8504.40.22 (Electrolytic rectifiers), 8504.40.29 (Other rectifiers), 8504.40.30 (Direct current (DC) converters), 8504.40.40 (Uninterruptible power supplies (UPS)), and more.