8546.10.00.00
Electrical insulators of any material / Of glass
Classification path
- Electrical insulators of any material
- Of glass
Rates of duty
- General (MFN)
- 2.9%
- Column 2Cuba, North Korea, Russia, Belarus
- 50%
- Unit of quantity
- No.
Trade agreement rates
Related lines in heading 8546
About heading 8546
Electrical insulators of any material
Heading 8546 covers electrical insulators of any material, meaning parts that support or separate conductors in electrical equipment. It is split first by material: glass, ceramics, or other materials. Ceramic insulators are then split between those used in high-voltage, low-frequency systems (with a further split for suspension, pin-type and line post types) and all other ceramic insulators.
Full guide to heading 8546Products in this heading
- Glass insulator bells and discs for power transmission lines
- Ceramic suspension insulators hung on high-voltage lines
- Ceramic pin-type insulators for overhead distribution lines
- Ceramic line post insulators
- Ceramic insulators used in high-voltage switchgear and transformers
- Plastic or resin insulators for electrical apparatus
- Porcelain bushing insulators for high-voltage equipment
Frequently asked questions
What is the HTS code for glass electrical insulators?
Glass insulators are classified under 8546.10.00.00, which carries a general (MFN) rate of 2.9%.
What is the duty on ceramic suspension insulators?
Ceramic suspension insulators for high-voltage, low-frequency systems fall under 8546.20.00.30 and pay a general (MFN) rate of 3%.
How do I classify a plastic insulator?
Insulators of materials other than glass or ceramics go under 8546.90.00.00, which is general (MFN) Free.
Source: USITC Harmonized Tariff Schedule, retrieved October 21, 2026.