💾 Data Updated: Latest version • Last updated: December 09, 2025

8504.40 - Static converters:

Sub-classifications

Commodity Code
Description

Overview

This HTS category, 8504.40, encompasses static converters, which are electrical devices that change direct current (DC) to alternating current (AC) or vice versa, or change the voltage of AC power without the use of moving parts. This specifically includes rectifiers, which convert AC to DC. These devices are crucial in a wide range of electronic and electrical systems to ensure appropriate power is supplied to various components.

It is important to distinguish this category from its siblings. Unlike ballasts (8504.10) used for discharge lamps, static converters are primarily concerned with changing the form or voltage of electrical power itself, rather than initiating or sustaining an electrical discharge. Similarly, while transformers (also within 8504) alter AC voltage, this category focuses on static conversion processes. Inductors (8504.50) store electrical energy in a magnetic field and do not perform voltage conversion or rectification. Parts of these items are classified under 8504.90.

Within 8504.40, further distinctions are made to refine classification based on the application of the static converter. Subheadings exist for specialized power supplies, such as those designed for automatic data processing machines (heading 8471) or specific printing equipment (subheadings 8443.31 or 8443.32). Additionally, converters for telecommunication apparatus are separately identified. The "Other" subcategory captures static converters not specifically enumerated elsewhere, requiring careful examination of their primary function and intended use.

Frequently Asked Questions

›What is HTS code 8504.40?
HTS code 8504.40 covers Static converters: under the US Harmonized Tariff Schedule. It falls under Chapter 85: Electrical machinery and equipment and parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles.
›What products are classified under 8504.40?
This classification covers Static converters:. It is a subcategory of Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: (8504).
›How many HTS codes are under 8504.40?
There are 4 direct subcategories under this classification.
›What are the subcategories under 8504.40?
This category contains 4 subcategories: Speed drive controllers for electric motors, Power supplies for automatic data processing machines or units thereof of heading 8471; power supplies for goods of subheading 8443.31 or 8443.32; power supplies for monitors of subheading 8528.42 or 8528.52 or projectors of subheading 8528.62:, For telecommunication apparatus, Other.

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