U.S. imports of AC Electric Motors with Output Exceeding 37.5 W (SITC 71631) totaled $524.1M in September 2026, imported from 87 countries.
Importers of AC Electric Motors with Output Exceeding 37.5 W paid $55.0M in duties in September 2026, an average duty rate of 10.51% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: September 2026 dataAlternating-current motors above 37.5 W — including single-phase, three-phase induction, and universal AC/DC types — are among the most widely traded electromechanical products globally, serving HVAC systems, industrial pumps, compressors, conveyors, and machine tools. Energy-efficiency regulations, including DOE minimum efficiency standards for general-purpose motors, influence which imported models are admissible for sale in the US market, adding a compliance layer beyond customs classification. Section 301 tariffs have reshaped sourcing patterns for Chinese-origin motors, accelerating qualification of suppliers in Mexico and other regions.
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33.0K import shipments a month
Yes. The US Department of Energy enforces minimum energy efficiency standards for covered motor categories under 10 CFR Part 431. Importers of general-purpose AC motors must ensure their products meet the applicable efficiency level (e.g., NEMA Premium or equivalent IE3) and that the required efficiency data is documented. Non-compliant motors cannot be legally sold or distributed in the US, regardless of their customs clearance status.
A universal motor uses a wound armature and series field windings that allow it to operate on either AC or DC supply, whereas a standard AC induction motor relies on electromagnetic induction and operates only on AC. Both types with output exceeding 37.5 W fall within SITC 71631, but the distinction matters for DOE efficiency program applicability and for matching the motor to its intended power supply in the end-use application.
Basic heading 44 of 642 in section 7
Basic heading 71631 · $524.1M of $172.0B
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ImportsExports
Imports
$524.1MYoY · free account
Exports
—YoY · free account
12-mo low · imports
Low · free accountOver the twelve months to September 2026, the U.S. imported $5.8B of AC Electric Motors with Output Exceeding 37.5 W.
Through September 2026 · exports 9 of 12 months reported. Source: U.S. Census Bureau.
Imports · September 2026
origin
Mexico and Japan together supply 54% of it. China pays 39.6% duty; Mexico 2.5%.
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.