Harmonized System
U.S. exports of Instruments for Measuring Voltage, Current, Resistance, or Power — Without Recording Device, Excluding Multimeters (NESOI) (HS 903039) totaled $26.0M in August 2026.
Importers of Instruments for Measuring Voltage, Current, Resistance, or Power — Without Recording Device, Excluding Multimeters (NESOI) paid $1.9M in duties in August 2026, an average duty rate of 9.63% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Instruments for Measuring Voltage, Current, Resistance, or Power — Without Recording Device, Excluding Multimeters (NESOI) imports of $19.8M in August 2026 ran 12% below the year-to-date monthly average of $22.4M.
Last updated: August 2026 dataSpecialized single-function or application-specific instruments that measure electrical quantities without a recording device — but are not multimeters — land in this residual heading, which carries a single US tariff line (9030390100). Products such as dedicated clamp meters, insulation testers, and high-voltage probes designed for specific industrial or laboratory tasks are typical candidates. The United Kingdom and Germany are the leading suppliers, reflecting the strong European precision-instrument manufacturing base for niche electrical test equipment. Correct exclusion of multimeters and recording-capable devices is the key classification gatekeeping step for this heading.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
932 import shipments a month
Two exclusions define this heading: the instrument must lack an integrated recording device, and it must not be a multimeter. A clamp meter that reads only current with no data storage, or a dedicated insulation resistance tester, would qualify. Adding a memory or data-output function shifts classification to a recording-device subheading; combining multiple measurement functions in one handheld unit may make it a multimeter instead.
Yes. The boundary between a specialized single-function instrument and a multimeter is frequently litigated at CBP. If a device measures two or more electrical parameters — even without a recording function — importers should consider requesting a binding ruling to lock in the correct classification before shipment, avoiding potential reclassification and back-duty exposure.
Subheading 7 of 11 in heading 9030
Subheading 903039 · $26.0M of $560.2M
Trade Directory
List your company under HS 903039 — Instruments for Measuring Voltage, Current, Resistance, or Power — Without Recording Device, Excluding Multimeters (NESOI), so the companies trading it can find you. Be the first supplier listed.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 9030390100 | Inst to Check Volt/Current/Etc, W/Record Device Nes | $19.8M | 9.63% | 84.35% | $1.9M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 9030390100 | Inst to Check Volt/Current/Etc, W/Record Device Nes | $26.0M |
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
$19.8MYoY · free account
Exports
$26.0MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $271.6M of Instruments for Measuring Voltage, Current, Resistance, or Power — Without Recording Device, Excluding Multimeters (NESOI) and exported $261.7M.
Through August 2026. Source: U.S. Census Bureau.
Exports · August 2026
destination
customs district
origin
entry
rate provision · imports
14.8% enters free of duty; duty collected equals 9.63% of imports for consumption.