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HSChapter 85
U.S. imports of electrical transformers (other than liquid dielectric), power handling capacity exceeding 1 kva but not exceeding 16 kva (HS 850432) totaled $15.7M in April 2026, traded with 45 countries.
Importers of Electrical Transformers (Other Than Liquid Dielectric), Power Handling Capacity Exceeding 1 KVA but Not Exceeding 16 KVA paid $2.9M in duties in April 2026 — an effective duty rate of 23% on $12.8M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataDry-type transformers in the 1–16 KVA range are widely used in commercial HVAC controls, machine tools, and light industrial power conditioning, and the entire heading resolves to a single 10-digit line (8504320000), making classification administratively simple once the liquid-dielectric and sub-1 KVA provisions are ruled out. Mexico and Canada are the leading US suppliers in this segment, with Vietnam and China also significant sources. The straightforward single-line structure means the primary classification risk lies in correctly establishing the rated KVA and confirming the transformer is dry-type rather than oil-filled.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Heading 8504.32 covers transformers exceeding 1 KVA but not exceeding 16 KVA, so a unit rated at exactly 16 KVA falls within this heading. A transformer rated above 16 KVA — even at 16.1 KVA — moves to heading 8504.33. The nameplate rated capacity is controlling, and importers should ensure invoices and technical data sheets reflect the precise rating to avoid misclassification.
Proximity to US industrial customers, USMCA preferential tariff treatment, and established manufacturing infrastructure for electrical equipment all contribute to Mexico and Canada's leading positions. For buyers evaluating supply-chain resilience, Vietnam is an emerging alternative, though lead times and logistics costs differ materially from North American sources.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| MEXICO | $7.2M | $2.1M | -$5.1M |
| CANADA | $1.0M | $1.8M | +$765K |
| GERMANY | $819K | $704K | -$115K |
| JAPAN | $1.4M | $63K | -$1.3M |
| PHILIPPINES | $1.4M | $3K | -$1.4M |
Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 8504320000 | TRANSFORMERS, GT 1 KVA BUT LT=16 KVA, NESOI | $15.7M | 22.85% | $2.9M |
TRANSFORMERS, GT 1 KVA BUT LT=16 KVA, NESOI
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8504320000 | TRANSFORMERS, GT 1 KVA BUT LT=16 KVA, NESOI | $8.5M |
TRANSFORMERS, GT 1 KVA BUT LT=16 KVA, NESOI
10.3K no
MACH FOR RECP/CONVR/TRANS/REGN OF VOICE/IMAGE/DATA
HS 851762
SOLID-STATE NON-VOL SEMICONDUCTOR STORAGE DEVICES
HS 852351
SMARTPHONES
HS 851713
PROCESSORS AND CONTROLLERS, ELECTRONIC INTEG CIRCT
HS 854231
CONTROLS ETC W ELECT APPR F ELECT CONT NOV 1000 V
HS 853710
STATIC CONVERTERS; ADP POWER SUPPLIES
HS 850440
| State | Imports | Exports | Balance |
|---|---|---|---|
| Wisconsin | $3.6M | $456K | -$3.1M |
| Texas | $2.1M | $1.2M | -$881K |
| California | $1.1M | $1.4M | +$288K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LAREDO, TX | $4.3M | $1.7M | -$2.6M |
| CLEVELAND, OH | $1.3M | $390K | -$868K |
| HOUSTON, TX | $329K | $943K | +$614K |