If you import or export copper busbars, the HS code you declare decides your duty rate, customs clearance speed, and compliance risk. Most buyers search for a single “copper busbar HS code,” but the correct number depends on two things: the copper material (refined, brass, or alloy) and whether the part is a plain bar or a further-worked assembly. Get either wrong and you risk reclassification, back duties, and shipment delays. This guide explains the 7407 vs 7419 split, gives a quick finder, and shows exactly how GRL Copper classifies the busbars we manufacture and ship to 40+ countries under IATF 16949.
Quick Answer
A plain refined-copper busbar is classified under HS 7407.21. Once it is drilled, tapped, bent, insulated, or assembled, it becomes an “article of copper” under HS 7419.91. Brass or other-alloy busbars use 7407.22 / 7407.29 (plain) or 7419.99 (worked). The 6-digit code is international; your destination’s 8–10 digit extension sets the actual duty.
The Harmonized System (HS) is the global product nomenclature administered by the World Customs Organization. Every traded good is assigned a 6-digit HS code that is recognizably the same in virtually every country. Customs authorities use it to apply tariffs, collect trade statistics, and screen controlled goods. For a Kupferschiene, the HS code is not a formality — it sits at the intersection of Chapter 74 (copper and articles thereof) and the worked-vs-raw distinction that separates bars from finished articles.
A wrong declaration can trigger three problems: an incorrect duty payment (too little invites penalties and back duty; too much erodes your margin), a clearance hold while brokers dispute the classification, and a permanent flag on your importer record. Because busbars straddle “raw mill shape” and “engineered component,” they are a frequent target of customs audits — which is exactly why a clear rule matters.
Copper busbars almost always fall into one of two headings, and the dividing line is how much work has been done to the bar:
The material then selects the precise subheading. Refined copper (the T2 / C11000 grade most busbars use, at 99.85%+ copper) takes the “.21” line; brass takes “.22”; other copper alloys take “.29”. A short worked example: a 10 mm x 100 mm bar of T2 copper, cut to 1.2 m with no holes, is 7407.21.00. The same bar, drilled and tapped for bolted joints, is 7419.91.00.
HS 7407.21 covers copper bars, rods, and profiles of refined copper — defined for customs as copper containing at least 99.85% by weight of copper. This is the grade behind the vast majority of power busbars, including GRL Copper’s T2 (C11000) products. The bar may be extruded, hot- or cold-drawn, rolled, or simply cut to a specified length; as long as it is not drilled, tapped, bent to shape, or assembled, it stays in 7407.21.
This is the lowest-duty resting place for a copper busbar and the one you should claim by default for plain stock. If you also need to understand current-carrying limits for these bars, see our Strombelastbarkeitstabelle für Kupferschienen.
Not every busbar is pure copper. Brass busbars (copper-zinc base alloys) are classified under HS 7407.22, while busbars made from other copper alloys — tin bronze, aluminium bronze, copper-nickel, and similar — fall under HS 7407.29. These grades are used where strength, springiness, or corrosion resistance outweigh pure conductivity. The same “plain bar vs further-worked article” test then pushes a worked alloy busbar into 7419.99 rather than 7407.29.
Heading 7419 is where engineered busbars land. A busbar ceases to be a “bar” and becomes an “article” once it carries value-adding operations beyond shaping the metal: drilling and tapping holes, bending to a formed shape, silver or tin plating the contact faces, fitting insulation sleeves, or mounting it into a Weiche Sammelschiene aus Kupferfolie or laminated connection. Refined-copper articles use 7419.91; alloy articles use 7419.99.
This distinction is the single most common misclassification we see. A broker who defaults every copper part to 7407.21 can under-declare a drilled-and-plated connection bar — and the importer, not the broker, is liable. Surface plating alone does not always move you to 7419 (a lightly tinned bar may still be 7407.21), but drilling, tapping, bending, and assembling reliably do. When in doubt, treat the part as an article.
| HS Code (6-digit) | Material | Form / Condition | Typical Busbar Product | Duty Note |
|---|---|---|---|---|
| 7407.21 | Refined copper (T2 / C11000, ≥99.85% Cu) | Bars / rods, drawn, extruded, cut | Plain rigid copper busbars | Lowest base rate; check national extension |
| 7407.22 | Brass (copper-zinc) | Bars / rods, as worked | Brass busbars | Per national schedule |
| 7407.29 | Other copper alloys (bronze, Cu-Ni) | Bars / rods, as worked | Alloy busbars | Per national schedule |
| 7419.91 | Refined copper | Further worked (drilled, tapped, bent, insulated, assembled) | Busbar connection assemblies | Often higher; includes labour / value-add |
| 7419.99 | Other copper alloys | Further worked (drilled, tapped, bent, assembled) | Alloy busbar assemblies | Often higher |
Not Sure Which HS Code Your Busbars Use?
Send us your drawing or a photo of the part as shipped. Our export team will confirm the correct 6-digit HS code and the right national extension for your destination market — before you commit to a shipment.
Follow this sequence for any copper busbar shipment:
Check the mill certificate. If copper content is 99.85% or higher (T2, C11000, ETP, OFHC), you are in the refined-copper family (7407.21 or 7419.91). If it is brass, use 7407.22 / 7419.99. Any other alloy points to 7407.29 / 7419.99.
Are there holes, threads, bends, plating for contact, insulation, or an assembly with other parts? If yes, you are in 7419. If it is only a shaped and cut bar, you are in 7407.
Combine Step 1 and Step 2 to land on one of the five codes. This 6-digit base is the same in every HS member country.
The United States adds 4 digits (HTS), the EU adds 4 (TARIC), and China adds 2–4 (CIQ / GB). The extension — not the 6-digit base — usually carries the duty rate and any anti-dumping measure. Verify it against the official tariff before quoting.
The 6-digit HS code is shared worldwide, but the digits you actually type into a customs declaration are longer. In the United States, HTS (Harmonized Tariff Schedule) extends the code to 10 digits; the first six match the HS, and the final four set the duty rate and any special program indicator. The EU’s TARIC adds 4 digits on top of the 8-digit Combined Nomenclature. China uses a 10-digit code where the last digits tie the goods to CIQ inspection categories.
This matters because two busbars with the identical 6-digit code can face very different duties depending on the extension and on trade measures. Refined-copper busbars from certain origins have at times been subject to anti-dumping or countervailing duties, which are applied at the national level. Always check the live tariff for your specific destination and country of origin — do not assume the rate from a different market applies.
When you file, the commercial invoice and packing list should state the full HS code, a clear product description (material, dimensions, whether worked), and the country of origin. Keep the mill certificate and any finishing spec on file — customs may request them to verify the 7407 vs 7419 call. For a deeper look at what drives busbar pricing (and how material grade feeds cost), our copper busbar price guide breaks down the variables.
Custom busbars — bent to a drawing, plated at the joints, or built into a laminated flexible Kupferschiene — almost always classify as 7419 articles rather than 7407 bars. That is good news for defensible classification: the more engineering value you add, the clearer it is that the part is a finished article. For electric-vehicle and energy-storage builders, our battery busbars for EV are supplied with the correct HS code pre-stated on every shipment document.
Need a Busbar Built and Classified to Your Drawing?
GRL Copper supplies rigid and flexible copper busbars from 5 mm² to 5000 mm² with full OEM customization, IATF 16949 and ISO 9001 certification. We state the correct HS code on every commercial invoice and packing list.
GRL Copper has manufactured and exported copper busbars for more than 30 years, shipping under HS 7407 and 7419 to over 40 countries across Europe, North America, and Asia. Our quality system is certified to IATF 16949 Und ISO 9001, and our product range spans cross-sections from 5 mm² to 5000 mm² in both rigid and Weiche Sammelschiene aus Kupferfolie forms.
A concrete case stays with us: in a 2023 shipment to a German switchgear OEM, the buyer’s broker initially declared drilled-and-tapped busbar assemblies under 7407.21. We supplied the finishing spec showing holes, threads, and silver-plated contact faces, and the part was correctly re-classified to 7419.91 — closing the duty gap before the goods reached the border. That experience is why we document the classification on every line item and why we recommend buyers never rely on a broker’s default code.
For the compliance side of busbar systems, our IEC 61439 compliance guide and our manufacturing process write-up show how material grade and finishing flow from the workshop into the documents customs see.
Talk to a GRL Copper Engineer
Send us your busbar drawing, material spec, and destination market. We will confirm the HS code in writing and review your specification free of charge.
A plain refined-copper busbar is classified under HS 7407.21, while a further-worked busbar (drilled, tapped, bent, insulated, or assembled) is classified under HS 7419.91. Brass busbars use 7407.22 or 7419.99, and other copper alloys use 7407.29 or 7419.99. The exact code depends on both the material and how much finishing work the part has received.
It is 7407 when the part is a bar or rod in its mill form — drawn, extruded, or cut only. It becomes 7419 once it is further worked into an article: holes, threads, bends, contact plating, insulation, or assembly with other components. The “further worked” test is the deciding factor, not the copper grade.
Light surface plating alone may still leave a plain bar in 7407.21, but plating combined with drilling, tapping, or assembly almost always moves the part to 7419.91 (refined) or 7419.99 (alloy). If the busbar is plated and also shaped into a finished connection, classify it as a worked article under 7419.
The US HTS extends the 6-digit HS to 10 digits. A plain refined-copper busbar starts from base 7407.21 and gains four national digits that set the duty rate; a worked refined-copper busbar starts from 7419.91. Always read the full 10-digit HTS from the official Harmonized Tariff Schedule, because the extension — not the base — carries the rate and any trade measures.
Yes. The 6-digit base decides the commodity class, and the national extension decides the rate. Because 7407 (bars) and 7419 (articles) sit in different parts of the schedule, choosing the wrong one can change the duty materially and expose the importer to back-duty and penalty risk. Correct classification protects both margin and compliance.
A busbar with drilled or tapped holes is a further-worked article. For refined copper it is HS 7419.91; for brass or other alloys it is 7419.99. The presence of holes is the clearest single signal that the part has moved out of the 7407 “bars” heading and into 7419 “articles.”
No. Material (refined vs brass vs alloy) and form (plain vs worked) change the code, and national extensions change the duty. A single code for every shipment risks misclassification. Classify each distinct part type, and keep the mill certificate and finishing spec on file to support the 7407 vs 7419 decision if customs asks.
Continue building your busbar knowledge with these GRL Copper guides:
Classifying a copper busbar is not guesswork: refined copper bars fall under HS 7407.21, while drilled, tapped, bent, or assembled busbars move to 7419.91. Always confirm the 6-digit base code first, then apply your destination’s national extension before quoting duty. With 30+ years of export experience and IATF 16949 certification, GRL Copper documents the correct HS code on every commercial invoice and packing list we issue. If your busbars are custom-dimensioned or part of a larger assembly, send us the drawing and we will confirm the classification in writing before you ship. Contact our team for a free specification review.
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