8546.20.00 - Of ceramics

This HTS category, 8546.20.00, specifically covers electrical insulators that are manufactured from ceramic materials. These insulators are designed to prevent the flow of electricity and are essential components in a wide range of electrical systems, from household wiring to industrial power transmission. The use of ceramic as the primary constituent material is the defining characteristic for classification under this code.

Distinguishing this category from its siblings is straightforward. 8546.10.00.00 covers electrical insulators made of glass. Therefore, if an insulator is made of glass, it will be classified under that heading, not this one. The "Other" category, 8546.90.00.00, serves as a residual for electrical insulators made from materials not otherwise specified, such as rubber, plastic, or porcelain that might not be strictly considered "ceramics" by HTS interpretation, or composite materials where ceramics are not the dominant component.

Within this classification, a further subdivision exists. The subcategory 8546.20.00.90 addresses ceramic electrical insulators that are "Other." This implies that there are specific types or applications of ceramic insulators that fall into a more granular classification, likely based on their intended use or electrical characteristics (e.g., high-voltage applications), which are detailed in the subsequent subheadings.