Electrical machines and apparatus — HTS 8543
Electrical machines and apparatus, having individual functions, not specified or included elsewhere in this chapter; parts thereof
Chapter 85 › Heading 8543
2026 HTS Rev 19 Synced Rules verified Operational
Written to help non-specialists understand this page. Rates, dates, and legal facts come from the official records above and on the linked source.
HTS heading 8543 covers electrical machines and apparatus that perform an individual function but are not described more specifically in another heading of Chapter 85. Examples can include certain specialized electrical devices, signal or control apparatus, and other equipment whose main function does not fit a more specific heading. The heading also includes parts of those machines and apparatus when the tariff structure provides for them.
Heading 8543 is only a 4-digit category, not the complete classification. To reach the correct 8-digit HTSUS code, first identify the product’s principal electrical function and confirm that no other heading describes it more specifically. Then compare the relevant 6-digit and 8-digit subheadings, which may distinguish the device by type, technology, intended function, or—where specified—material or other construction details. Use the product’s technical specifications, operating method, and whether it is a complete device or a part to support the selection.
What to check
- Describe the product’s actual electrical function, including what it does, how it operates, and what it is designed to control, measure, convert, transmit, or generate.
- Check other Chapter 85 headings before using 8543; this heading generally applies only when the product is not more specifically provided for elsewhere.
- Read every level of the HTSUS hierarchy from heading to subheading, and match the product to the exact type, function, technology, or construction description.
- Determine whether the shipment is a complete apparatus, an identifiable part, an accessory, or a set, and verify that the selected provision covers that form.
- Keep technical literature, schematics, photographs, model information, and composition details available; request a customs-broker review or binding classification decision when competing provisions remain plausible.
HTS heading 8543 summary
Electrical machines and apparatus is a 4-digit product category containing 3 published product-code lines in this snapshot. A heading does not carry one universal duty rate; classification must be narrowed to the line matching the product facts.
How to find your code in this category
A heading is a product category. To get the exact duty, narrow from this 4-digit heading to a sub-category (usually by material), then open the 8-digit code that matches your product.
Open any code in the tables below to see its exact duty rate, a duty calculator (enter your shipment value → estimated duty and landed cost), the rate-change history chart, and the country-by-country breakdown (including Section 301/232 add-on duties).
Why you have to click in: a single category can contain products with very different duties. The rate depends on the specific product — its material and construction — and on the country of origin, and those only get pinned down at the 8-digit code level. That is why this page points you to codes instead of showing one rate for the whole category.
Sub-categories
| Code | Description |
|---|---|
| 8543.30 | Machines and apparatus for electroplating, electrolysis or electrophoresis |
| 8543.70 | Other machines and apparatus |
| 8543.90 | Parts |
Product codes & duty rates
👇 Each row is a specific product code — click a blue code to open its full page with exact duty rates by country, the rate-history chart, and a duty calculator. 👉
| Code | Description | General (MFN) | Special | Column 2 |
|---|---|---|---|---|
| 8543.10.00.00 👉 | Particle accelerators | 1.9% | Free | 35% |
| 8543.20.00.00 👉 | Signal generators | Free | — | 35% |
| 8543.40.00 👉 | Electronic cigarettes and similar personal electric vaporizing devices | 2.6% | Free | 35% |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 8543?
Electrical machines and apparatus, having individual functions, not specified or included elsewhere in this chapter; parts thereof. To classify a specific item you must pick the matching sub-category and 8-digit code above; the right choice usually depends on the material and construction of the product.
How do I choose the right code within this category?
Start from the sub-categories (typically divided by material—for example cotton versus man-made fibers), then open the active 8- or 10-digit code that matches the product. When unsure, a licensed customs broker or a CBP binding ruling can confirm the classification.
Reference information only, not customs, legal, or classification advice. Confirm the current code and rate against the official HTS before you import.