8537.20.00 - For a voltage exceeding 1,000 V

This HTS category, 8537.20, specifically addresses boards, panels, consoles, desks, cabinets, and other bases that are equipped with two or more apparatuses for electric control or the distribution of electricity, where these apparatuses are designed to operate at a voltage exceeding 1,000 volts. This includes assemblies that incorporate instruments or apparatuses from Chapter 90, as well as numerical control apparatus, excluding switching apparatuses classified under heading 8517. The key distinguishing factor for this classification is the operational voltage being greater than 1,000 V.

In contrast to its sibling category, 8537.10, which covers similar electrical control and distribution assemblies for voltages *not exceeding* 1,000 V, this section is dedicated to higher voltage applications. This distinction is crucial for determining the correct tariff treatment, as equipment designed for higher voltages typically possesses different construction, safety features, and component ratings.

The subcategories under 8537.20 provide further refinement based on the specific nature of the equipment. 8537.20.00.20 is reserved for switchgear assemblies and switchboards, which are integrated systems of circuit breakers, switches, fuses, and related control mechanisms designed for high-voltage power systems. The residual category, 8537.20.00.40, encompasses all other types of electrical control and distribution bases and cabinets that fall within the scope of heading 8537 but are not specifically switchgear assemblies or switchboards.