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SITCSection 7
U.S. imports of lightning arresters, voltage limiters & surge suppressors (over 1,000 volts) (SITC 77245) totaled $8.5M in April 2026, traded with 38 countries.
Importers of Lightning Arresters, Voltage Limiters & Surge Suppressors (Over 1,000 Volts) paid $859K in duties in April 2026 — an effective duty rate of 15% on $5.7M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataRated for voltages exceeding 1,000 volts, these high-voltage protective devices — including lightning arresters, voltage limiters, and surge suppressors — are critical components in utility transmission infrastructure, industrial substations, and renewable energy installations. Classification at this voltage threshold separates them from low-voltage counterparts and carries distinct tariff treatment, including potential Section 301 exposure for China-origin goods. Importers should confirm that the device's rated voltage genuinely exceeds 1,000 V, as misclassification between high- and low-voltage protection apparatus is a common CBP audit trigger.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
CBP looks to the device's rated operating voltage as declared by the manufacturer. Equipment rated above 1,000 V falls under the high-voltage heading (77245), while functionally similar devices rated at or below 1,000 V classify elsewhere. Technical datasheets and test certifications are the primary documentation used to support the claimed voltage rating.
Many electrical apparatus in this category sourced from China are subject to Section 301 tariffs. Importers should verify the applicable list and product-specific exclusion status with a licensed customs broker before entry, as coverage and exclusion availability have changed over time.
| Country | Imports | Exports | Balance |
|---|---|---|---|
| MEXICO | $2.5M | $1.3M | -$1.2M |
| CANADA | $505K | $1.7M | +$1.2M |
| GERMANY | $1.4M | $62K | -$1.3M |
| KOREA, SOUTH | $4K | $1.2M | +$1.2M |
| SWITZERLAND | $1.2M | $54K | -$1.1M |
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Monthly import values over time