Standard International Trade Classification
U.S. imports of Lightning Arresters, Voltage Limiters & Surge Suppressors (Over 1,000 Volts) (SITC 77245) totaled $13.1M in August 2026, imported from 42 countries.
Importers of Lightning Arresters, Voltage Limiters & Surge Suppressors (Over 1,000 Volts) paid $1.6M in duties in August 2026, an average duty rate of 12.33% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Lightning Arresters, Voltage Limiters & Surge Suppressors (Over 1,000 Volts) imports of $13.1M in August 2026 ran 29% above the year-to-date monthly average of $10.2M.
Last updated: August 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.
710 import shipments a month
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.
Basic heading 388 of 642 in section 7
Basic heading 77245 · $13.1M of $172.0B
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Imports · August 2026
origin
China pays 40.2% duty; Mexico 3.3%.
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
$13.1MYoY · free account
Exports
$7.4MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $114.1M of Lightning Arresters, Voltage Limiters & Surge Suppressors (Over 1,000 Volts).
Through August 2026 · exports 10 of 12 months reported. Source: U.S. Census Bureau.