U.S. imports of Static Converters & ADP Power Supplies (HS 850440) totaled $1.8B in August 2026, imported from 106 countries.
Importers of Static Converters & ADP Power Supplies paid $179.1M in duties in August 2026, an average duty rate of 10.33% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataStatic converters — including rectifiers, inverters, speed drive controllers, and power supplies for automatic data processing (ADP) machines — span one of the most granularly subdivided headings in Chapter 85, with 18 active 10-digit tariff lines differentiating by end-use (ADP-incorporated vs. standalone), output wattage (≤50 W through >500 W), and device type. Thailand leads US import supply for this heading, with China and Vietnam also prominent sources; goods of Chinese origin face Section 301 exposure across multiple lines. Speed drive controllers (8504404000) serve industrial motor applications, while the ADP power supply lines are essential inputs for server, desktop, and embedded computing hardware.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
45.0K import shipments a month
The distinction turns on whether the power supply is designed and dedicated for physical incorporation into an ADP machine or unit of heading 8471 (e.g., a server PSU sold as an OEM component) versus a standalone or general-purpose unit. Documentation such as OEM purchase orders, technical specifications, and end-use declarations can support the incorporated-use claim. Misclassification between these groups carries duty and penalty risk, so a binding ruling from CBP is advisable for high-volume importers.
Yes. Inverters under 8504409570 originating from China are generally subject to Section 301 tariffs. Importers should check the current Section 301 annexes and any product-specific exclusions, as the list and exclusion status can change. Working with a licensed customs broker to confirm current applicability is strongly recommended.
Subheading 1 of 11 in heading 8504
Subheading 850440 · $1.8B of $3.1B
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
ImportsExports
Imports
$1.8BYoY · free account
Exports
$647.5MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $19.1B of Static Converters & ADP Power Supplies and exported $6.6B.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
China pays 35.4% duty; Mexico 1.1%.
customs district
destination
entry
rate provision · imports
18.6% enters free of duty; duty collected equals 10.33% of imports for consumption.