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SITCSection 7
U.S. imports of static converters (e.g., rectifiers) (SITC 77121) totaled $1.8B in July 2026, traded with 104 countries.
Importers of Static Converters (e.g., Rectifiers) paid $179.2M in duties in July 2026 — an effective duty rate of 13% on $1.4B in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataRectifiers, inverters, converters, and regulated power supplies — collectively classified as static converters — are foundational components in renewable energy systems, industrial motor drives, data center power infrastructure, and consumer electronics. Unlike rotating machinery, static converters have no moving parts, relying on semiconductor devices to transform voltage, frequency, or current type. China-origin static converters across a wide range of HTS subheadings are subject to Section 301 tariffs, and solar inverters have drawn additional trade-remedy scrutiny, making origin and product-type documentation critical for importers serving the energy and electronics sectors.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
45.8K shipments/mo
Basic heading 14 of 642 in section 7
Basic heading 77121 · $1.8B of $175.6B
Grid-tied and off-grid solar inverters are generally classified as static converters, though the specific HTS subheading depends on output characteristics such as single-phase versus three-phase and kVA rating. Solar inverters from certain origins have also been subject to antidumping and countervailing duty proceedings separate from Section 301 measures, so importers should verify the full trade-remedy landscape for their specific product and origin before entry.
The primary classification factors are the converter's function (rectifier, inverter, frequency converter, regulated power supply), its output power rating in kVA or watts, and whether it is single-phase or polyphase. Secondary factors such as input/output voltage range and intended application (e.g., telecommunications, industrial, consumer) may further determine the applicable HTS subheading. Manufacturer datasheets and technical drawings should accompany the entry documentation.
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Imports · July 2026
origin
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$1.8BYoY · Pro
Exports
$596.9MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.