HS 850440 · Static converters (rectifiers, inverters)
Get the code right at quotation time, not at customs.
Misclassifying HS 850440 on the commercial invoice walks the cargo into the wrong duty rate, the wrong rebate column, and a customs hold that costs days of demurrage to clear. This page gives you the WCO heading, the product it most often covers, the China VAT export rebate rate, the US Section 301 status, the supplier provinces that ship it, and practitioner buying notes for first-time importers.
For an explanation of how the WCO Harmonized System is structured, what each digit means, and why misclassification is the most common landed-cost error first-time buyers make, see the HS code glossary entry.
Key facts
The numbers a buyer needs at the quotation stage. Verify each against the live source before invoicing; rates and rebate columns move.
| WCO heading | Static converters (rectifiers, inverters, etc.) |
|---|---|
| Chapter | 85, Electrical machinery and equipment |
| Industry segment | Switchgear and control |
| Chinese name | 静止式变流器（整流器等） |
| China VAT export rebate | 13% Source: China State Taxation Administration (国家税务总局), 2025 schedule. Subject to change. |
| US Section 301 | 25% Source: USTR Section 301 List 1 / 2 / 3 / 4. Verify against the current schedule. |
| Major Chinese supplier provinces | Guangdong, Jiangsu, Zhejiang |
Buying notes
Solar inverters, EV chargers (DC fast-charge converters), industrial UPS, motor-drive rectifiers, and welding-power-source rectifiers. Huawei, Sungrow, Goodwe, Solis dominate the solar-inverter export; BYD and Star Charge lead EV-charger export. Section 301 25%; FCC, UL 1741 / IEEE 1547 (US), VDE-AR-N 4105 / EN 50549 (EU), AS 4777 (Australia) grid-interconnection standards drive certification. Solar-inverter spec drift between datasheet and shipped unit (efficiency, MPPT range, anti-islanding response) is the most common warranty-rate trigger.
Common end uses
The applications that drive most of the global tonnage under this code.
- Solar PV inverters (string, central, microinverter)
- EV charging stations (AC and DC)
- Industrial UPS and backup power
- Motor drives (variable-frequency drives, VFDs)
- Welding power supplies and induction-heating
Where to read next
For the structure of the HS / Harmonized System, what each digit means, and why misclassification costs landed-cost margin, see the HS code glossary entry.
Need a quote on this code? Send us the HS code, the destination port, and the tonnage and we will quote FOB China and CIF / DDP landed including the current Section 301 and rebate position.
Read next
Other codes in the same chapter and the references behind them
HS Code
HS 854141 Solar cells (PV modules and panels)
Chapter 85, Solar cells (PV modules and panels). China VAT rebate 13%.
HS Code
HS 854110 Diodes (other than photosensitive or LED)
Chapter 85, Diodes (other than photosensitive or LED). China VAT rebate 13%.
HS Code
HS 854121 Transistors with dissipation rate <1W
Chapter 85, Transistors with dissipation rate <1W. China VAT rebate 13%.
HS Code
HS 853650 Switches (≤1000V)
Chapter 85, Switches (≤1000V). China VAT rebate 13%.
HS Code
HS 853669 Plugs and sockets (≤1000V)
Chapter 85, Plugs and sockets (≤1000V). China VAT rebate 13%.
Glossary
HS Code, Harmonized System Code
A six-digit international product classification code used by customs authorities worldwide to identify goods, assess duties, and apply trade controls. Countries extend the six-digit base with additional digits for tariff and statistical purposes (10-digit HTS in the US, 8-digit CN code in the EU, 10-digit AHECC in Australia).
Free download
Free PDF: thirty-point factory audit checklist used on every chemical-park site visit, mapped against the HS-code-leading Chinese producers.