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HSChapter 85
U.S. imports of electrical insulators of glass (HS 854610) totaled $4.7M in June 2026, traded with 15 countries.
Importers of Electrical Insulators of Glass paid $1.3M in duties in June 2026 — an effective duty rate of 29% on $4.7M in dutiable value, based on actual customs collections rather than the published tariff schedule. Electrical Insulators of Glass imports of $4.7M in June 2026 ran 11% above the year-to-date monthly average of $4.2M.
Glass 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.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
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.
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CHINA | $3.0M | $110K | -$2.9M |
| SPAIN | $960K | -- | -$960K |
| ITALY | $533K | -- | -$533K |
| NETHERLANDS | -- | $120K | +$120K |
| INDIA | $24K | $62K | +$39K |
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Monthly import values over time
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8546100000 | ELECTRICAL INSULATORS OF GLASS | $4.7M | 28.76% | 99.40% | $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 | $679K |
MACH FOR RECP/CONVR/TRANS/REGN OF VOICE/IMAGE/DATA
HS 851762
SOLID-STATE NON-VOL SEMICONDUCTOR STORAGE DEVICES
HS 852351
SMARTPHONES
HS 851713
PROCESSORS AND CONTROLLERS, ELECTRONIC INTEG CIRCT
HS 854231
CONTROLS ETC W ELECT APPR F ELECT CONT NOV 1000 V
HS 853710
STATIC CONVERTERS; ADP POWER SUPPLIES
HS 850440
| State | Imports | Exports | Balance |
|---|---|---|---|
| Texas | $1.5M | -- | -$1.5M |
| Washington | $1.1M | -- | -$1.1M |
| Missouri | $955K | $32K | -$923K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| HOUSTON, TX | $1.3M | -- | -$1.3M |
| CHARLESTON, SC | $1.1M | $62K | -$1.1M |
| NORFOLK-NEWPORT NEWS, VA | $955K | -- | -$955K |