Official data Source: US Census Bureau international trade data
Track this productLiquid dielectric transformers having a power handling capacity not exceeding 650 kva
In short
- The US imported $1.23B of this product over the 12 months to August 2026, down 16% on the year before.
- Mexico is the largest supplier, with 48.4% of US imports; Korea, South is next, with 18.3%.
- Mexico is the cheapest main supplier before and after freight and duty, landing at $2,664 each.
- Duty paid averaged 23.3% of the value of imports in August 2026, up 18.6 points on a year earlier.
- Mexico is gaining share: 44.6% over the last 12 months, up from 30.3%.
- US exports were $75.6M over the last 12 months; the largest market is Canada, with 35.2%.
US imports, Aug 2026
$82.4M
↓ −18% vs Aug 2025
Last 12 months
$1.23B
↓ −16% vs the 12 months before
Average duty paid
23.3%
↑ +18.6 pts vs Aug 2025
Top supplier
Mexico
48.4% of US imports
US imports by month
The last 13 months, so the same month a year ago is on the left. August 2026 is highlighted. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.
Show the numbers
| Month | US imports |
|---|---|
| August 2025 | $100.9M |
| September 2025 | $109.3M |
| October 2025 | $119.3M |
| November 2025 | $98.6M |
| December 2025 | $98.3M |
| January 2026 | $101.6M |
| February 2026 | $89.2M |
| March 2026 | $121.0M |
| April 2026 | $109.0M |
| May 2026 | $108.0M |
| June 2026 | $103.1M |
| July 2026 | $88.6M |
| August 2026 | $82.4M |
What changed
- US imports were $82.4M in August 2026, down 7.1% from July 2026 and down 18% from August 2025.
- Over the 12 months to August 2026 they totalled $1.23B, down 16% on the 12 months before.
- Biggest moves in market share since July 2026: Mexico up from 44.0% to 48.4%, Germany down from 5.3% to 1.7%.
- Average price from Canada fell 28% since July 2026, to $9,753 each.
- Duty paid on imports from Germany rose from 16.5% to 24.8% of their value since July 2026.
US trade by year
US imports were $1.23B in the 12 months to Aug 2026, up 406% on the 12 months to Aug 2017. US exports were $75.6M, down 9.3%. In January 2022 the HS 2022 revision moved some goods between this code and 8524.11, 8524.12, 8524.19 and 12 more, so part of a change across the dashed line can be the revision. In January 2017 the HS 2017 revision moved some goods between this code and 8542.31, 8542.32, 8542.33 and 1 more, so part of a change across the dashed line can be the revision. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.
Show the numbers
| Period | US imports |
|---|---|
| 12 months to Aug 2017 | $242.5M |
| 12 months to Aug 2018 | $275.2M |
| 12 months to Aug 2019 | $295.5M |
| 12 months to Aug 2020 | $331.1M |
| 12 months to Aug 2021 | $348.9M |
| 12 months to Aug 2022 | $494.0M |
| 12 months to Aug 2023 | $825.8M |
| 12 months to Aug 2024 | $1.50B |
| 12 months to Aug 2025 | $1.46B |
| 12 months to Aug 2026 | $1.23B |
- Mexico
- Korea, South
- Canada
- Brazil
- All countries
Show the numbers
| Period | Mexico | Korea, South | Canada | Brazil |
|---|---|---|---|---|
| 12 months to Aug 2017 | 65.0% | 0.1% | 29.0% | 0.1% |
| 12 months to Aug 2018 | 67.1% | 0.2% | 26.3% | 0.0% |
| 12 months to Aug 2019 | 65.0% | 0.4% | 23.4% | 1.5% |
| 12 months to Aug 2020 | 66.9% | 1.4% | 23.4% | 0.0% |
| 12 months to Aug 2021 | 64.9% | 3.8% | 23.7% | 1.2% |
| 12 months to Aug 2022 | 72.7% | 3.7% | 19.0% | 0.6% |
| 12 months to Aug 2023 | 53.9% | 16.9% | 13.3% | 7.2% |
| 12 months to Aug 2024 | 32.8% | 28.6% | 8.3% | 12.3% |
| 12 months to Aug 2025 | 30.3% | 31.4% | 10.0% | 7.4% |
| 12 months to Aug 2026 | 44.6% | 18.6% | 16.1% | 4.8% |
Show the numbers
| Period | Mexico | Korea, South | Canada | Brazil | All countries |
|---|---|---|---|---|---|
| 12 months to Aug 2017 | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% |
| 12 months to Aug 2018 | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% |
| 12 months to Aug 2019 | 0.0% | 0.0% | 0.0% | 0.0% | 0.2% |
| 12 months to Aug 2020 | 0.0% | 0.0% | 0.0% | 0.0% | 0.1% |
| 12 months to Aug 2021 | 0.0% | 0.0% | 0.0% | 0.0% | 0.1% |
| 12 months to Aug 2022 | 0.0% | 0.0% | 0.0% | 0.0% | 0.2% |
| 12 months to Aug 2023 | 0.0% | 0.0% | 0.0% | 0.0% | 0.2% |
| 12 months to Aug 2024 | 0.0% | 0.0% | 0.0% | 0.0% | 0.7% |
| 12 months to Aug 2025 | 0.1% | 2.3% | 0.9% | 2.3% | 2.3% |
| 12 months to Aug 2026 | 10.0% | 15.6% | 6.5% | 31.4% | 12.6% |
| Period | US imports | Duty paid | US exports |
|---|---|---|---|
| 12 months to Aug 2026 | $1.23B−16% | 12.6%+10.3 pts | $75.6M−9.8% |
| 12 months to Aug 2025 | $1.46B−3.0% | 2.3%+1.7 pts | $83.8M−8.1% |
| 12 months to Aug 2024 | $1.50B+82% | 0.7%+0.4 pts | $91.2M+11% |
| 12 months to Aug 2023 | $825.8M+67% | 0.2%0.0 pts | $82.0M+7.7% |
| 12 months to Aug 2022HS 2022 revision | $494.0M+42% | 0.2%+0.1 pts | $76.2M+6.5% |
| 12 months to Aug 2021 | $348.9M+5.4% | 0.1%0.0 pts | $71.5M−13% |
| 12 months to Aug 2020 | $331.1M+12% | 0.1%−0.1 pts | $82.1M−4.7% |
| 12 months to Aug 2019 | $295.5M+7.4% | 0.2%+0.1 pts | $86.2M−3.2% |
| 12 months to Aug 2018 | $275.2M+13% | 0.0%0.0 pts | $89.1M+6.9% |
| 12 months to Aug 2017HS 2017 revision | $242.5M | 0.0% | $83.3M |
Who supplies the US
August 2026. Small figures under each value are the change from August 2025. Landed cost by origin, below, adds freight and duty to the price.
| Country | US imports | Share | Average price | Duty paid | Last 13 months |
|---|---|---|---|---|---|
| Mexico | $39.9M | 48.4%+7.0 pts | $1,973 each−12% | 24.8%+24.4 pts | |
| Korea, South | $15.0M | 18.3%−5.8 pts | $3,947 each−42% | 25.0%+18.3 pts | |
| Canada | $12.6M | 15.3%+4.0 pts | $9,753 each−19% | 15.3%+12.0 pts | |
| Taiwan | $3.1M | 3.8%new | $12,981 each | 25.0% | |
| Brazil | $3.1M | 3.7%+2.2 pts | $14,019 each+25% | 24.6%+0.5 pts | |
| Colombia | $2.2M | 2.6%−8.2 pts | $4,384 each−28% | 25.0%+16.7 pts | |
| Germany | $1.4M | 1.7%+0.2 pts | $43,392 each+2641% | 24.8%+24.5 pts | |
| Sweden | $1.0M | 1.2%+1.2 pts | $114,168 each+1349% | 4.8%−10.2 pts | |
| Other countries (15) | $4.0M | 4.9%−3.5 pts | $6,784 each+6.5% | 29.0%+14.4 pts | |
| All countries | $82.4M | 100.0% | $3,061 each−16% | 23.3%+18.6 pts |
The 3 largest suppliers had 79.3% of US imports over the last 12 months.
Landed cost by origin
What importers paid to land this product at a US port from each main supplier, June–August 2026: the price, freight and insurance to the first US port, and duty, per unit. Suppliers with 3% or more of these imports, cheapest landed first. Small figures under landed cost are the change from the same months a year earlier.
- Price
- Freight and insurance
- Duty
| Country | Price | Freight and insurance | Duty | Landed cost | Make-up |
|---|---|---|---|---|---|
| Mexico | $2,125 each | $12.44 each0.6% of price | $526.62 each24.8% of price | $2,664 each+12% | |
| Korea, South | $3,904 each | $187.55 each4.8% of price | $968.31 each24.8% of price | $5,060 each−29% | |
| Colombia | $4,968 each | $215.22 each4.3% of price | $1,219 each24.5% of price | $6,402 each−5.8% | |
| Canada | $12,031 each | $57.14 each0.5% of price | $1,907 each15.9% of price | $13,995 each+15% | |
| Brazil | $15,612 each | $329.53 each2.1% of price | $3,570 each22.9% of price | $19,512 each+23% | |
| Germany | $72,810 each | $214.54 each0.3% of price | $12,288 each16.9% of price | $85,312 each+4968% | |
| All countries | $3,385 each | $70.36 each2.1% of price | $779.15 each23.0% of price | $4,234 each−4.8% |
Landed at a US port, Mexico was cheapest, at $2,664 each: 47.3% below Korea, South.
Landed cost from Germany rose 4968% on a year earlier, to $85,312 each, mostly on price: $1,660 each then, $72,810 each now.
How the market is shifting
Mexico gained the most share: 44.6% of US imports over the last 12 months, up from 30.3% in the 12 months before. Korea, South lost the most: 18.6%, down from 31.4%. The charts show September 2024 to August 2026 for the 4 largest suppliers over the last 12 months. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.
- Mexico
- Korea, South
- Canada
- Brazil
- All countries
Show the numbers
| Month | Mexico | Korea, South | Canada | Brazil |
|---|---|---|---|---|
| September 2024 | 30.5% | 33.5% | 8.0% | 8.4% |
| October 2024 | 39.4% | 30.0% | 7.2% | 4.3% |
| November 2024 | 30.0% | 30.7% | 8.6% | 5.8% |
| December 2024 | 24.1% | 35.1% | 8.6% | 9.5% |
| January 2025 | 25.3% | 37.1% | 9.4% | 11.9% |
| February 2025 | 33.1% | 29.0% | 8.2% | 12.2% |
| March 2025 | 28.7% | 32.3% | 13.9% | 5.4% |
| April 2025 | 21.8% | 39.9% | 11.3% | 8.1% |
| May 2025 | 27.7% | 27.2% | 12.7% | 10.9% |
| June 2025 | 26.3% | 27.5% | 12.6% | 6.4% |
| July 2025 | 36.5% | 27.7% | 10.0% | 4.1% |
| August 2025 | 41.5% | 24.1% | 11.3% | 1.5% |
| September 2025 | 40.7% | 19.3% | 15.9% | 3.7% |
| October 2025 | 46.9% | 20.9% | 17.2% | 2.4% |
| November 2025 | 43.9% | 19.8% | 19.1% | 3.5% |
| December 2025 | 37.3% | 29.0% | 14.7% | 5.5% |
| January 2026 | 42.0% | 20.9% | 14.6% | 6.9% |
| February 2026 | 40.4% | 17.0% | 19.9% | 2.3% |
| March 2026 | 47.5% | 15.9% | 14.7% | 5.0% |
| April 2026 | 53.9% | 14.6% | 13.0% | 4.5% |
| May 2026 | 44.6% | 13.8% | 18.7% | 6.6% |
| June 2026 | 44.4% | 17.5% | 14.9% | 7.3% |
| July 2026 | 44.0% | 17.0% | 15.4% | 5.5% |
| August 2026 | 48.4% | 18.3% | 15.3% | 3.7% |
Show the numbers
| Month | Mexico | Korea, South | Canada | Brazil | All countries |
|---|---|---|---|---|---|
| September 2024 | 0.0% | 0.0% | 0.0% | 0.0% | 0.5% |
| October 2024 | 0.0% | 0.0% | 0.0% | 0.0% | 1.5% |
| November 2024 | 0.0% | 0.0% | 0.0% | 0.0% | 0.7% |
| December 2024 | 0.0% | 0.0% | 0.0% | 0.0% | 0.8% |
| January 2025 | 0.0% | 0.0% | 0.0% | 0.0% | 0.5% |
| February 2025 | 0.0% | 0.0% | 0.0% | 0.0% | 0.7% |
| March 2025 | 0.0% | 0.0% | 2.8% | 0.0% | 1.6% |
| April 2025 | 0.0% | 0.5% | 0.5% | 0.7% | 1.7% |
| May 2025 | 0.0% | 9.7% | 0.4% | 7.7% | 5.4% |
| June 2025 | 0.0% | 10.0% | 1.0% | 9.7% | 6.3% |
| July 2025 | 0.1% | 7.4% | 1.8% | 10.0% | 4.9% |
| August 2025 | 0.4% | 6.7% | 3.3% | 24.1% | 4.8% |
| September 2025 | 0.5% | 14.2% | 1.3% | 48.5% | 8.3% |
| October 2025 | 0.2% | 15.0% | 1.8% | 50.0% | 7.1% |
| November 2025 | 0.4% | 9.6% | 0.0% | 50.0% | 6.1% |
| December 2025 | 0.4% | 3.9% | 0.1% | 46.2% | 5.4% |
| January 2026 | 0.6% | 15.0% | 0.0% | 50.0% | 9.5% |
| February 2026 | 0.3% | 11.5% | 0.0% | 33.6% | 5.2% |
| March 2026 | 0.1% | 10.0% | 0.0% | 9.4% | 3.5% |
| April 2026 | 18.2% | 22.2% | 14.8% | 18.7% | 18.3% |
| May 2026 | 24.9% | 25.0% | 17.9% | 20.7% | 22.7% |
| June 2026 | 25.0% | 24.5% | 16.6% | 22.1% | 22.9% |
| July 2026 | 24.5% | 25.0% | 15.6% | 22.9% | 22.9% |
| August 2026 | 24.8% | 25.0% | 15.3% | 24.6% | 23.3% |
Tariff actions touching this product
When the duty paid on this product changed and stayed changed, for its main suppliers and all countries, newest first, with the Federal Register notices that named the product in the 3 months before. Rates are medians of the 4 months either side, less any usual seasonal swing. A change shows what happened to duty paid, not why; read each notice for what it did.
- February–May 2026 · Duty paid: Mexico 0.5% → 24.8%, Korea, South 10.8% → 24.7%, Canada 0.0% → 16.1%, Brazil 50.0% → 19.7%, all countries 5.3% → 22.8%.
- August 2025 · Duty paid: Brazil 8.7% → 49.3%.
- May 2025 · Duty paid: Korea, South 0.0% → 8.5%.
Where it enters the US
Main ports of entry over the 12 months to August 2026: US imports and share.
Where US exports go
US exports were $5.7M in August 2026, down 3.4% from August 2025, and $75.6M over the last 12 months, down 9.8% on the 12 months before. Fastest-growing market with 3% or more of US exports: China, up 18%.
| Market | Last 12 months | Share | vs 12 months before |
|---|---|---|---|
| Canada | $26.6M | 35.2% | −18% |
| China | $8.9M | 11.7% | +18% |
| Mexico | $7.5M | 9.9% | −38% |
| Korea, South | $7.3M | 9.6% | −12% |
| Saudi Arabia | $2.2M | 2.9% | +118% |
| South Africa | $1.5M | 2.0% | +1135% |
| India | $1.2M | 1.6% | −20% |
| Libya | $993K | 1.3% | +202% |
| Other countries (90) | $19.4M | 25.6% | +7.2% |
| All countries | $75.6M | 100.0% | −9.8% |
Markets abroad
Each country's own import figures for this product, from UN Comtrade: the 8 biggest importers outside the US in the latest year each has reported, what they bought from the US, and the change from the year before. Values usually include freight and insurance to the importer's border, so they run a little above US export figures. Countries report a year or more late; 122 have reported 2025 so far.
| Market | Imports | vs year before | From the US | US share |
|---|---|---|---|---|
| Germany | $280.6Min 2025 | +21% | $306K | 0.1% |
| France | $149.7Min 2025 | +0.8% | $182K | 0.1% |
| United Kingdom | $144.0Min 2025 | −32% | $572K | 0.4% |
| Mexico | $104.5Min 2025 | +60% | $9.5M | 9.1% |
| Greece | $93.4Min 2025 | +62% | $266K | 0.3% |
| Italy | $90.1Min 2025 | +104% | $384K | 0.4% |
| Netherlands | $83.6Min 2025 | +58% | $29K | 0.0% |
| Spain | $76.5Min 2025 | +178% | $48K | 0.1% |
The biggest market outside the US is Germany, which imported $280.6M of this product in 2025, 0.1% of that from the US.
Of these, imports into Spain grew fastest: up 178% from 2024 to 2025.
Related products
Other products under heading 8504: electrical transformers, static converters or inductors; power supplies for adp machines or units; parts thereof. US trade over the 12 months to August 2026.
| Product | US imports | US exports |
|---|---|---|
| Electrical static converters; power supplies for adp machines or units of 8471HS 8504.40 | $19.10B | $6.64B |
| Parts for electrical transformers, static converters and inductorsHS 8504.90 | $4.23B | $1.06B |
| Liquid dielectric transformers having a power handling capacity exceeding 10,000 kvaHS 8504.23 | $4.32B | $47.2M |
| Electrical inductors not elsewhere specifiedHS 8504.50 | $2.79B | $496.2M |
| Liquid dielectric transformers having a power handling capacity exceeding 650 kva but not exceeding 10,000 kvaHS 8504.22 | $2.10B | $64.2M |
| Electrical transformers not elsewhere specified, having a power handing capacity not exceeding 1 kvaHS 8504.31 | $678.2M | $422.6M |
| Electrical transformers not elsewhere specified, having a power handling capacity exceeding 500 kvaHS 8504.34 | $909.3M | $54.3M |
| Electrical transformers not elsewhere specified, having a power handing capacity exceeding 16 kva but not exceeding 500 kvaHS 8504.33 | $658.3M | $218.6M |
About these figures
- Source: US Census Bureau international trade data, not seasonally adjusted, in US dollars. Retrieved November 3, 2026.
- US imports are general imports at customs value, which excludes freight and insurance. Exports are at free-alongside-ship value.
- Average price is customs value divided by quantity (number of items), across all of the product's 10-digit lines.
- Duty paid is the duty Census calculates on each country's imports for consumption, as a share of their value. It moves with tariff changes, exemptions and the mix of goods within the product.
- Landed cost adds Census's import charges (freight, insurance and other costs of bringing the goods to the first US port) and calculated duty to the customs value, per unit, across the product's 10-digit lines. It leaves out antidumping and countervailing duties, customs fees and transport inland. Prices are averages across the goods within the code, so a lower one can mean cheaper goods, not the same goods for less.
- Markets abroad are each country's imports as it reports them to UN Comtrade, in US dollars, usually including freight and insurance. Countries report a year or more late and in their own edition of the HS codes, so one still on an older edition is missing for codes that changed in 2022.
- Census revises recent months, so figures can change slightly. These are estimates for research and planning, not customs or legal advice.