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HSChapter 85
U.S. imports of liquid dielectric transformers, power handling capacity exceeding 650 kva but not exceeding 10,000 kva (HS 850422) totaled $170.9M in July 2026, traded with 37 countries.
Importers of Liquid Dielectric Transformers, Power Handling Capacity Exceeding 650 KVA but Not Exceeding 10,000 KVA paid $45.0M in duties in July 2026 — an effective duty rate of 26% on $170.2M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataMedium-power oil-filled transformers in the 650 KVA to 10,000 KVA range serve substation and large industrial applications, and the US schedule divides them at 2,500 KVA — with 8504220040 covering units up to that threshold and 8504220080 covering those up to 10,000 KVA. Mexico and South Korea are the leading US suppliers in this segment, and China is also a notable source, making Section 301 tariff exposure a live issue for Chinese-origin units. As with smaller liquid dielectric transformers, antidumping and countervailing duty orders may apply depending on origin and scope, requiring pre-entry due diligence.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
1.4K shipments/mo
The nameplate rated capacity of the transformer, expressed in KVA, is the controlling figure. Importers should ensure the commercial invoice and technical documentation clearly state the rated KVA, as CBP will use this to assign the correct 10-digit line. Transformers with multiple tap settings should be classified based on the maximum rated capacity shown on the nameplate.
Beyond standard entry documents, CBP typically expects a commercial invoice with the rated KVA, country of manufacture, and unit value; a packing list; and technical specifications or a nameplate data sheet. If the shipment is subject to an AD/CVD order, a scope ruling or certification of origin may also be required. Large transformers often move as project cargo, so advance coordination with a customs broker on entry timing and examination procedures is advisable.
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8504220080 | Liquid Dlctc Transform Gt 2500kva But Lt=10000 Kva | $111.5M | 26.98% | 99.61% | $30.1M |
| 8504220040 | Liquid Dlctc Transform Gt 650kva But Lt= 2500 Kva | $59.4M | 25.05% | 99.63% | $14.9M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8504220080 | Liquid Dlctc Transform Gt 2500kva But Lt=10000 Kva | $2.7M |
| 8504220040 | Liquid Dlctc Transform Gt 650kva But Lt= 2500 Kva | $481K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
ImportsExports
Imports
$170.9MYoY · Pro
Exports
$3.2MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
Mexico and Korea, South together supply 60% of it.
customs district
destination
entry
rate provision · imports
0.4% enters free of duty; the effective duty rate is 26.31%.