U.S. imports of Electrical Insulators of Glass (HS 854610) totaled $4.3M in August 2026, imported from 16 countries.
Importers of Electrical Insulators of Glass paid $1.3M in duties in August 2026, an average duty rate of 30.36% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataGlass electrical insulators — used primarily on overhead power lines, railway catenary systems, and telecommunications infrastructure — are classified here based on their glass construction, distinguishing them from ceramic and other insulator types. China dominates US import supply for this heading, with Italy and Spain also notable sources reflecting European glassmaking heritage in utility-grade insulators. Importers should be aware that glass insulators from China are subject to Section 301 tariffs, which has prompted some utilities and EPC contractors to evaluate alternative sourcing from Italy, Spain, Japan, or India.
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52 import shipments a month
Material composition is the controlling criterion: glass insulators fall under heading 854610, while ceramic (porcelain) insulators are classified under 854620. The distinction is straightforward when the material is clear, but composite or coated insulators may require a binding ruling from CBP if the primary material is ambiguous.
In the US, glass insulators for transmission and distribution lines are typically specified to ANSI/IEEE standards (such as ANSI C29 series) or IEC standards for international procurement. Importers supplying utilities or EPC contractors should confirm that the product meets the applicable mechanical and electrical performance standard, as non-conforming insulators may be rejected at the project level regardless of customs clearance.
Subheading 3 of 3 in heading 8546
Subheading 854610 · $4.3M of $54.5M
ImportsExports
Imports
$4.3MYoY · free account
Exports
$490KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $57.9M of Electrical Insulators of Glass and exported $6.7M.
Through August 2026. Source: U.S. Census Bureau.
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 |
|---|---|---|---|---|---|
| 8546100000 | Electrical Insulators of Glass | $4.3M | 30.36% | 99.87% | $1.3M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8546100000 | Electrical Insulators of Glass | $490K |
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.
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Imports · August 2026
origin
China and Italy together supply 97% of it. China pays 40.4% duty; Italy 10.0%.
customs district
destination
entry
rate provision · imports
0.1% enters free of duty; duty collected equals 30.36% of imports for consumption.