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Hollow Glass Core Insulator for Switchgear from Japan

A hollow cylindrical glass insulator used as housing for high-voltage bushings in electrical switchgear and transformers. Falls under HTS 8546.10.00.00 for its glass construction providing high dielectric insulation in substation equipment.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

Import Tips

Submit partial discharge and impulse withstand voltage test reports

Declare exact inner/outer dimensions for customs verification

Avoid reclassification by excluding any pre-installed conductive end fittings