HS Code for Medium Power Transformers
The HS Code for medium power transformers is 850432. The MFN duty rate for importing to the US is 2.4%.
| HS Code (6-digit) | 850432 |
|---|---|
| US Duty Rate (MFN) | 2.4% |
| EU Duty Rate (MFN) | 2.2% |
| Chapter | 85 |
| Heading | 8504 |
| Last Updated | 2026-05 |
Description
Transformers having a power handling capacity exceeding 1 kVA but not exceeding 16 kVA
HS Code 850432 covers medium power transformers with a capacity over 1 kVA but not exceeding 16 kVA and a US duty rate of 2.4%.
Frequently Asked Questions
Does importing a Medium Power Transformer (HTS 850432) into the United States require any specific regulatory approvals or import licenses?
Yes, for transformers falling under HTS 850432, the U.S. Department of Energy (DOE) requires importers to file a notice of importation under 10 CFR 431.203. This applies specifically to liquid-immersed, medium-power distribution transformers and requires submission of a certification of admissibility to U.S. Customs and Border Protection (CBP) at the port of entry.
What specific packaging and shipping requirements apply to medium power transformers (HTS 850432) to prevent damage during ocean freight?
Due to their weight, internal coils, and oil-filled components, medium power transformers (1-16 kVA) must be crated on skids with internal blocking and bracing to prevent movement. Shippers must comply with IMDG Code Special Provision 238, which often requires upright orientation markings and documentation confirming the transformer is non-flammable and free from PCBs.
Common Classification Mistakes: Medium Power Transformers
A frequent error is classifying medium power transformers under HTS 8504.33 (liquid dielectric transformers > 10,000 kVA) when their capacity is below that threshold, or misplacing them in 8504.31 (< 1 kVA) or 8504.32 (1-16 kVA). Ensure the rated power (kVA) is accurately confirmed against these brackets. Another mistake involves incorrectly classifying units with integrated rectifiers or controls; if these components are solely for the transformer's operation, they do not change the classification from 8504.32.
Source electronics directly from manufacturers
Compare Prices from Manufacturers →Sponsored by Alibaba
Related HS Codes
Ready to source Medium Power Transformers?
Compare prices from verified suppliers on Alibaba.
View Verified SuppliersAffiliate link — we may earn a commission at no extra cost to you.
Related Tools
Get tariff change alerts
We'll email you when duty rates change for products you care about. No spam.