HS Code for Power Supplies and Converters
The HS Code for power supplies and converters is 850440. The MFN duty rate for importing to the US is 1.5%.
| HS Code (6-digit) | 850440 |
|---|---|
| US HTS (10-digit) | 8504400000 |
| EU CN Code (8-digit) | 85044000 |
| US Duty Rate (MFN) | 1.5% |
| EU Duty Rate (MFN) | 2.2% |
| Chapter | 85 |
| Heading | 8504 |
| Last Updated | 2026-05 |
Description
Static converters
HS Code 850440 covers static converters including power supplies, with a US MFN duty rate of 1.5%.
Frequently Asked Questions
What are the critical packaging requirements for shipping static converters (HTS 850440) to prevent customs delays?
Static converters must be packaged to prevent physical damage and electrostatic discharge (ESD), using anti-static materials. The outer packaging must clearly display the harmonized system (HS) code, country of origin, and a detailed commercial invoice inside. Inadequate packaging that exposes circuits can lead to customs holds for inspection, as the components may be mistaken for restricted or sensitive electronics.
For the import of static converters (HTS 850440) into China, are there any specific certification requirements or restrictions on the type of power supply?
Yes, all static converters (AC-DC, DC-DC, etc.) imported into China require mandatory China Compulsory Certification (CCC Mark). Additionally, for telecommunications power supplies or converters embedded in IT equipment, they must comply with the network access license (NAL) requirements from the Ministry of Industry and Information Technology (MIIT).
How does the presence of an AC-to-DC conversion function affect the classification of a power supply under HTS 8504.40?
HTS 8504.40 specifically covers static converters, which are defined by their function of converting electrical current (e.g., AC to DC, DC to AC, or DC to DC). Therefore, a device primarily designed for AC-to-DC conversion, such as a common external power adapter for electronic equipment, is definitively classifiable here. The specific input and output voltage/current ratings do not change the classification, as long as the core function remains electrical conversion.
Key Country-Specific Regulations for Power Supplies
Importing power supplies under HTS 8504.40.xx is subject to varying national regulations. For the United States, certain external power supplies must meet the Department of Energy's (DOE) energy efficiency standards under 10 CFR 430.32. Shipments to the European Union require CE marking, demonstrating compliance with the Low Voltage Directive (2014/35/EU) and the Electromagnetic Compatibility Directive (2014/30/EU). China's CCC (China Compulsory Certification) mark is mandatory for many types of power supplies sold domestically, and imports may require pre-market certification. Always verify the specific model's compliance with the destination country's safety and energy regulations prior to shipment.
Common Classification Errors for Power Supplies
A frequent mistake is classifying standalone switch-mode power supplies (SMPS) for general use under 8504.40. They are correctly classified here. However, power supplies that are integral, inseparable parts of a machine (e.g., inside a computer or printer) must be classified with that machine. Another common error involves confusing AC-AC converters with voltage stabilizers; true voltage stabilizers and surge suppressors fall under heading 8504.30 or 8504.40, depending on their specific function and design. Always verify if the unit is a distinct, separate unit versus a component part.
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