9902.16.91 - Printed circuit assemblies suitable for use solely with ground fault circuit interrupters (GFCIs) and arc fault circuit interrupters (AFCIs) of subheading 8536.30.80 (provided for in subheading 8538.90.30)

This HTS category, 9902.16.91, encompasses specialized printed circuit assemblies designed exclusively for integration into ground fault circuit interrupters (GFCIs) and arc fault circuit interrupters (AFCIs). These components are crucial for the functionality of safety devices that protect against electrical hazards. The classification is specifically linked to GFCIs and AFCIs that fall under subheading 8536.30.80, and the assemblies themselves are provided for within subheading 8538.90.30, highlighting their role as parts or accessories for electrical apparatus.

Unlike the broader categories found at the HTS Database Root, which cover a vast array of goods such as live animals or manufactured products, this node is highly specific. Its purpose is to address a particular type of component within a specialized subset of electrical safety equipment. The inclusion under Chapter 99 signifies a temporary legislation or modification, indicating that this classification may be subject to changes or specific import conditions related to trade agreements or other regulatory measures.

As a leaf node, there are no further subdivisions within HTS code 9902.16.91. Therefore, the classification is definitive for printed circuit assemblies meeting all the stipulated criteria. Importers must ensure that the assemblies are indeed manufactured for sole use with GFCIs and AFCIs that correspond to the referenced subheadings to correctly utilize this classification. The specific nature of this code underscores the detailed and precise requirements of the Harmonized Tariff Schedule for accurate duty assessment and trade facilitation.