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SITCSection 7
U.S. exports of electric rotary converters (SITC 71640) totaled $2.9M in July 2026.
Importers of Electric Rotary Converters paid $84K in duties in July 2026 — an effective duty rate of 16% on $531K in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataRotary converters use rotating machinery to transform AC to DC (or vice versa) or to change voltage and frequency, distinguishing them from static inverters and transformers. Widely used in industrial power conditioning, traction systems, and legacy grid infrastructure, they occupy a distinct classification from static converters under SITC 71640. Importers should confirm whether a unit qualifies as a rotary converter versus a static converter or motor-generator set, as misclassification affects applicable duty treatment.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
40 shipments/mo
Basic heading 71640 · $589K of $175.6B
A rotary converter uses a rotating electromechanical assembly to convert electrical power, whereas a static converter (such as a rectifier or inverter) has no moving parts. This mechanical distinction is the key classification boundary — units with rotating components belong under the rotary converter heading, while solid-state devices fall elsewhere.
Rail traction systems, industrial process plants requiring precise frequency conversion, and older utility substations are the primary end-use sectors. Some specialized military and marine applications also rely on rotary converters where static alternatives cannot meet harmonic or isolation requirements.
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Exports · July 2026
destination
Japan and United Kingdom together take 67% of it.
customs district
Census does not publish district detail for this classification system.
origin
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$589KYoY · Pro
Exports
$2.9MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.