9902.16.90 - Assemblies each comprising a chassis or shelving of subheading 8517.70 combined with a backplane (panel/distribution board) equipped with two or more apparatus of heading 8535 or 8536, for electric control or the distribution of electricity, for a voltage not exceeding 1,000 V (provided for in subheading 8537.10.91)

This HTS classification, 9902.16.90, covers specialized assemblies for electrical control and distribution, specifically designed for voltages not exceeding 1,000 V. These assemblies are distinguished by their composition, which includes a chassis or shelving unit, typically originating from subheading 8517.70, integrated with a backplane or distribution board. This backplane is further equipped with at least two distinct apparatus classified under heading 8535 or 8536, facilitating electrical control or distribution functions. The essential characteristic is the combination of structural support with functional electrical components, all intended for low-voltage applications.

As this node is a leaf node within Chapter 99, it does not have further subcategories to detail. Its purpose is to provide a specific tariff provision for these complex assemblies, distinct from the individual components that might be classified elsewhere. The inclusion of this provision within Chapter 99 indicates it is subject to temporary legislation or special import conditions, as outlined by the parent context. Therefore, when classifying goods, users should verify the specific conditions and applicability of this 9902 code, ensuring the assembly precisely matches the described combination of components and voltage rating.