Electrical transformers, static converters and inductors: South Korea exports and imports
HS 8504 · 변압기ㆍ정지형 변환기(예: 정류기)와 유도자 · latest month: October 2026
Exports, October 2026
$513.6M
+6.7% vs previous month
vs same month a year earlier
+75.4%
export value
Exports, last 12 months
$4.79B
+8.0% vs 12 months before
Imports, October 2026
$392.0M
Export value per kg
$17.76
net weight, October 2026
In October 2026, South Korea exported $513.6 million of electrical transformers, static converters and inductors (HS 8504), up 6.7% from September 2026 and up 75.4% from October 2025.
Over the 12 months to October 2026, exports of electrical transformers, static converters and inductors (HS 8504) totalled $4.79 billion, up 8.0% from the 12 months before ($4.44 billion).
The largest destination over the 12 months to October 2026 was the United States ($2.47 billion, 51.5% of the total), followed by Vietnam and China.
That was 1.0% of South Korea's exports under HS chapter 85 (electrical machinery and electronics) over the same 12 months.
Imports in October 2026 were $392.0 million (up 16.5% from October 2025), leaving a surplus of $121.6 million for the month.
Official description of HS 8504: Electrical transformers, static converters(for example, rectifiers) and inductors.
Last 24 months
Subheadings under HS 8504
| Code | Product | Exports, 12 months | Share | vs 12 months before | October 2026 |
|---|---|---|---|---|---|
| 8504.10 | Ballasts for discharge lamps or tubes | $8.2M | 0.2% | +10.6% | $402K |
| 8504.10.1010 | Rated at not more than 1 A | $1.0M | 12.5% | +30.7% | $1,841 |
| 8504.10.1020 | Rated at more than 1 A but not more than 20 A | $5.0M | 60.6% | +49.2% | $163K |
| 8504.10.2000 | Rated at more than 20 A but not more than 60 A | $403K | 4.9% | -68.1% | $11K |
| 8504.10.3000 | Rated at more than 60 A | $1.8M | 21.9% | -11.5% | $226K |
| 8504.21 | Having a power handling capacity not exceeding 650 kVA | $232.8M | 4.9% | -42.9% | $16.8M |
| 8504.21.1000 | Instrument transformers | $1.3M | 0.6% | -0.1% | $159K |
| 8504.21.9010 | Having a power handling capacity not exceeding 100 kVA | $149.9M | 64.4% | -42.1% | $12.9M |
| 8504.21.9020 | Having a power handling capacity exceeding 100 kVA but not exceeding 650 kVA | $81.6M | 35.1% | -44.7% | $3.7M |
| 8504.22 | Having a power handling capacity exceeding 650 kVA but not exceeding 10,000 kVA | $629.2M | 13.1% | +7.5% | $81.2M |
| 8504.22.1000 | Instrument transformers | $370K | 0.1% | -93.4% | $20K |
| 8504.22.9010 | Having a power handling capacity exceeding 650 kVA but not exceeding 1,000 kVA | $50.3M | 8.0% | -40.0% | $1.1M |
| 8504.22.9020 | Having a power handling capacity exceeding 1,000 kVA but not exceeding 5,000 kVA | $376.9M | 59.9% | -12.1% | $62.4M |
| 8504.22.9030 | Having a power handling capacity exceeding 5,000 kVA but not exceeding 10,000 kVA | $201.7M | 32.1% | +201.9% | $17.7M |
| 8504.23 | Having a power handling capacity exceeding 10,000 kVA | $1.62B | 33.7% | +34.0% | $192.4M |
| 8504.31 | Having a power handling capacity not exceeding 1 kVA | $50.4M | 1.1% | -12.7% | $3.7M |
| 8504.31.1000 | Instrument transformers | $11.9M | 23.6% | +3.9% | $1.1M |
| 8504.31.2000 | Voltage regulators | $3.9M | 7.8% | -25.2% | $331K |
| 8504.31.9010 | Having a power handling capacity not exceeding 100 VA | $27.8M | 55.1% | -18.3% | $2.0M |
| 8504.31.9020 | Having a power handling capacity exceeding 100 VA but not exceeding 500 VA | $4.8M | 9.6% | +13.3% | $208K |
| 8504.31.9040 | Having a power handling capacity exceeding 500 VA but not exceeding 1 kVA | $2.0M | 3.9% | -29.2% | $53K |
| 8504.32 | Having a power handling capacity exceeding 1 kVA but not exceeding 16 kVA | $8.3M | 0.2% | -35.1% | $862K |
| 8504.32.1000 | Instrument transformers | $576K | 7.0% | -70.7% | $47K |
| 8504.32.2000 | Voltage regulators | $339K | 4.1% | +0.2% | $25K |
| 8504.32.9010 | Having a power handling capacity exceeding 1 kVA but not exceeding 5 kVA | $2.7M | 32.3% | -59.6% | $198K |
| 8504.32.9020 | Having a power handling capacity exceeding 5 kVA but not exceeding 16 kVA | $4.7M | 56.7% | +22.4% | $593K |
| 8504.33 | Having a power handling capacity exceeding 16 kVA but not exceeding 500 kVA | $23.5M | 0.5% | -35.2% | $3.0M |
| 8504.33.1000 | Instrument transformers | $4.3M | 18.4% | +2,258% | $1.4M |
| 8504.33.2000 | Voltage regulators | $721K | 3.1% | +94.1% | $2,255 |
| 8504.33.9010 | Having a power handling capacity exceeding 16 kVA but not exceeding 30 kVA | $3.5M | 14.7% | +11.7% | $384K |
| 8504.33.9020 | Having a power handling capacity exceeding 30 kVA but not exceeding 100 kVA | $8.9M | 38.0% | -46.6% | $574K |
| 8504.33.9040 | Having a power handling capacity exceeding 100 kVA but not exceeding 500 kVA | $6.1M | 25.8% | -61.8% | $631K |
| 8504.34 | Having a power handling capacity exceeding 500 kVA | $282.8M | 5.9% | +43.9% | $26.4M |
| 8504.34.1000 | Instrument transformers | $202K | 0.1% | +472.0% | $142K |
| 8504.34.2000 | Voltage regulators | $81K | 0.0% | +211.8% | $0 |
| 8504.34.9010 | Having a power handling capacity exceeding 500 kVA but not exceeding 2,000 kVA | $24.0M | 8.5% | -51.1% | $3.2M |
| 8504.34.9030 | Having a power handling capacity exceeding 2,000 kVA | $258.5M | 91.4% | +75.5% | $23.0M |
| 8504.40 | Static converters | $1.02B | 21.3% | +1.9% | $103.2M |
| 8504.40.1010 | For automatic data processing machines and units of heading 84.71 or of subheadings 8443.31, 8443.32, 8528.42, 8528.52 o | $4.3M | 0.4% | +57.0% | $803K |
| 8504.40.1090 | Other | $50.3M | 4.9% | -10.4% | $3.7M |
| 8504.40.2011 | For automatic data processing machines and units of heading 84.71 or of subheadings 8443.31, 8443.32, 8528.42, 8528.52 o | $1.4M | 0.1% | -45.4% | $141K |
| 8504.40.2019 | Other | $36.2M | 3.5% | +15.6% | $4.1M |
| 8504.40.2020 | For propulsion motor of electric vehicles (including hybrid types) | $6.9M | 0.7% | +12.2% | $638K |
| 8504.40.2091 | For automatic data processing machines and units of heading 84.71 or of subheadings 8443.31, 8443.32, 8528.42, 8528.52 o | $234K | 0.0% | +539.4% | $3,226 |
| 8504.40.2099 | Other | $106.3M | 10.4% | -16.7% | $18.0M |
| 8504.40.3010 | For automatic data processing machines and units of heading 84.71 or of subheadings 8443.31, 8443.32, 8528.42, 8528.52 o | $56.8M | 5.6% | +25.2% | $4.2M |
| 8504.40.3090 | Other | $40.6M | 4.0% | -0.4% | $4.0M |
| 8504.40.4010 | For automatic data processing machines and units of heading 84.71 or of subheadings 8443.31, 8443.32, 8528.42, 8528.52 o | $37K | 0.0% | +11.2% | $1,948 |
| 8504.40.4090 | Other | $3.2M | 0.3% | +31.9% | $237K |
| 8504.40.5010 | For automatic data processing machines and units of heading 84.71 or of subheadings 8443.31, 8443.32, 8528.42, 8528.52 o | $5.2M | 0.5% | +14.6% | $537K |
| 8504.40.5090 | Other | $11.5M | 1.1% | +54.7% | $764K |
| 8504.40.9011 | For automatic data processing machines | $3.8M | 0.4% | +152.4% | $212K |
| 8504.40.9019 | Other | $3.3M | 0.3% | +38.3% | $246K |
| 8504.40.9091 | For telecommunication apparatus | $20.2M | 2.0% | -5.2% | $1.6M |
| 8504.40.9099 | Other | $670.5M | 65.7% | +3.2% | $64.0M |
| 8504.50 | Other inductors | $534.8M | 11.2% | +3.5% | $44.9M |
| 8504.50.1010 | For automatic data processing machines and units of heading 84.71 or of subheadings 8443.31, 8443.32, 8528.42, 8528.52 o | $109K | 0.0% | +55.4% | $41K |
| 8504.50.1090 | Other | $116.7M | 21.8% | -5.6% | $14.1M |
| 8504.50.2010 | For automatic data processing machines and units of heading 84.71 or of subheadings 8443.31, 8443.32, 8528.42, 8528.52 o | $21.4M | 4.0% | -16.7% | $288K |
| 8504.50.2090 | Other | $354.4M | 66.3% | +8.4% | $27.8M |
| 8504.50.9010 | For automatic data processing machines and units of heading 84.71 or of subheadings 8443.31, 8443.32, 8528.42, 8528.52 o | $581K | 0.1% | +671.5% | $87K |
| 8504.50.9090 | Other | $41.6M | 7.8% | +3.3% | $2.6M |
| 8504.90 | Parts | $386.9M | 8.1% | -6.1% | $40.7M |
| 8504.90.1000 | PCA (printed circuit assemblies) of subheadings 8504.40, 8504.50 which consist of one or more printed circuits of headin | $4.6M | 1.2% | -7.4% | $396K |
| 8504.90.9000 | Other | $382.4M | 98.8% | -6.1% | $40.3M |
Six-digit codes are international; the indented ten-digit codes are South Korea's own subdivision. These rows are world totals; "Share" is the share of the row above.
Top destinations
Export value over the 12 months to October 2026. 179 countries received this product from South Korea in the last 24 months; the table shows the largest 20.
| Rank | Country | Exports, 12 months | Share | vs 12 months before | Rank before | October 2026 |
|---|---|---|---|---|---|---|
| 1 | United States | $2.47B | 51.5% | +15.4% | 1 | $310.2M |
| 2 | Vietnam | $368.2M | 7.7% | +1.1% | 2 | $26.3M |
| 3 | China | $265.9M | 5.5% | -11.9% | 3 | $22.1M |
| 4 | United Kingdom | $173.0M | 3.6% | +29.1% | 5 | $43.3M |
| 5 | India | $127.8M | 2.7% | +8.9% | 6 | $15.1M |
| 6 | Malaysia | $119.3M | 2.5% | +108.9% | 14 | $4.1M |
| 7 | Japan | $103.9M | 2.2% | +16.2% | 7 | $10.8M |
| 8 | Netherlands | $83.0M | 1.7% | +28.3% | 12 | $3.5M |
| 9 | Kuwait | $76.7M | 1.6% | +78.6% | 18 | $4,257 |
| 10 | Taiwan | $72.3M | 1.5% | +1.5% | 11 | $6.2M |
| 11 | Mexico | $70.1M | 1.5% | +15.2% | 13 | $7.9M |
| 12 | Philippines | $65.5M | 1.4% | +35.7% | 16 | $3.6M |
| 13 | Slovakia | $63.4M | 1.3% | -22.5% | 9 | $5.4M |
| 14 | Canada | $62.3M | 1.3% | -29.2% | 8 | $591K |
| 15 | Czechia | $60.1M | 1.3% | -17.6% | 10 | $4.6M |
| 16 | United Arab Emirates | $50.9M | 1.1% | +16.1% | 17 | $4.1M |
| 17 | Saudi Arabia | $50.2M | 1.0% | -70.5% | 4 | $8.8M |
| 18 | Norway | $48.6M | 1.0% | +345.1% | 33 | $814 |
| 19 | Indonesia | $47.8M | 1.0% | +16.8% | 19 | $4.6M |
| 20 | Poland | $45.2M | 0.9% | +75.5% | 25 | $4.7M |
Countries are linked when exports of this product to them reached $5,000,000 over 24 months.
Monthly figures
| Month | Exports | vs year earlier | Export weight | Export $/kg | Imports | Import weight |
|---|---|---|---|---|---|---|
| October 2026 | $513.6M | +75.4% | 28,921 t | $17.76 | $392.0M | 12,611 t |
| September 2026 | $481.2M | +26.8% | 29,502 t | $16.31 | $378.7M | 11,585 t |
| August 2026 | $415.5M | +19.3% | 22,422 t | $18.53 | $355.0M | 10,906 t |
| July 2026 | $399.1M | -0.7% | 23,026 t | $17.33 | $343.6M | 10,759 t |
| June 2026 | $340.6M | -29.4% | 20,552 t | $16.57 | $368.2M | 12,582 t |
| May 2026 | $356.8M | -6.9% | 19,004 t | $18.78 | $334.6M | 10,147 t |
| April 2026 | $405.5M | -0.9% | 23,686 t | $17.12 | $368.7M | 10,536 t |
| March 2026 | $405.9M | +15.1% | 21,894 t | $18.54 | $353.1M | 10,042 t |
| February 2026 | $319.5M | -15.4% | 17,532 t | $18.22 | $325.0M | 8,587 t |
| January 2026 | $366.7M | +17.1% | 20,219 t | $18.14 | $324.4M | 9,389 t |
| December 2025 | $408.1M | -2.0% | 27,108 t | $15.05 | $405.1M | 11,386 t |
| November 2025 | $382.4M | +34.5% | 22,991 t | $16.63 | $356.9M | 9,404 t |
| October 2025 | $292.8M | -18.5% | 16,172 t | $18.10 | $336.4M | 8,313 t |
| September 2025 | $379.4M | +7.0% | 23,028 t | $16.48 | $363.2M | 10,120 t |
| August 2025 | $348.4M | +14.1% | 19,138 t | $18.20 | $337.9M | 9,608 t |
| July 2025 | $402.0M | +29.1% | 25,295 t | $15.89 | $344.9M | 9,745 t |
| June 2025 | $482.5M | +35.9% | 27,076 t | $17.82 | $320.3M | 9,498 t |
| May 2025 | $383.4M | +21.1% | 22,371 t | $17.14 | $301.0M | 10,150 t |
| April 2025 | $409.2M | +24.3% | 24,208 t | $16.90 | $334.0M | 10,239 t |
| March 2025 | $352.5M | -2.9% | 19,691 t | $17.90 | $317.5M | 9,949 t |
| February 2025 | $377.5M | +4.5% | 21,951 t | $17.20 | $260.1M | 7,669 t |
| January 2025 | $313.2M | -0.9% | 17,239 t | $18.17 | $337.7M | 9,416 t |
| December 2024 | $416.5M | +17.8% | 25,584 t | $16.28 | $344.3M | 9,895 t |
| November 2024 | $284.4M | -4.7% | 17,000 t | $16.73 | $277.5M | 8,101 t |
Exports FOB, imports CIF, US dollars. Weight is net weight. "vs year earlier" compares export value with the same month one year before and is left blank when that month was under $10,000. Source: Korea Customs Service, via data.go.kr.