8535.30.00.40 - Knife

This classification, HTS 8535.30.00.40, specifically covers knife switches and make-and-break switches designed for use in electrical circuits exceeding 1,000 volts. These devices are primarily used for isolating electrical equipment from a power source or for manually opening and closing circuits. The defining characteristic is their knife-blade configuration, where a conductive blade is inserted into or withdrawn from contacts to establish or break an electrical connection.

Within the broader heading of "Isolating switches and make-and-break switches," this subcategory is distinct from its sibling, 8535.30.00.80 ("Other"). The sibling category would encompass other types of isolating and make-and-break switches that do not utilize a knife-blade design, such as rotary switches or lever-operated switches with different contact mechanisms. Therefore, classification under 8535.30.00.40 hinges on the presence of the specific knife-type switching mechanism.

As this is a leaf node within the HTS database, there are no further subcategories to introduce. The classification is precise, meaning that items fitting the description of knife switches and make-and-break switches operating at voltages above 1,000 volts will fall directly into this category. When classifying, focus on the physical design of the switch mechanism and its intended voltage rating to ensure accurate application.