8504.21.00.20 - Having a power handling capacity not exceeding 50 kVA

This HTS classification, 8504.21.00.20, pertains to liquid dielectric transformers with a power handling capacity specifically not exceeding 50 kVA. These transformers utilize a liquid insulating medium, such as oil, to cool and insulate their windings. They are designed for applications where a lower power output is required, making them suitable for smaller electrical systems, control circuits, or specialized equipment.

The defining characteristic of this category is its upper limit of 50 kVA. It is distinguished from its sibling categories by this precise power handling threshold. For instance, 8504.21.00.40 covers transformers with a higher capacity, ranging from over 50 kVA up to 100 kVA, while 8504.21.00.60 and 8504.21.00.80 address even greater power ranges. Therefore, the selection of this specific code hinges entirely on the transformer's rated power output.

As this is a leaf node within the HTS structure, there are no further subcategories. Classification into 8504.21.00.20 is final once the transformer is identified as a liquid dielectric type and confirmed to have a power handling capacity of 50 kVA or less. This ensures precise categorization for import and export purposes, facilitating accurate duty assessment and statistical tracking.