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Chapter 85 · HTS 8504.34

HTS 8504.34 – Large Power Transformers >500 kVA (Grid-Scale)

HTS 8504.34 covers large power transformers over 500 kVA including substation and grid-scale transformers. Lead times of 1–2 years are common for these custom-built units. German (ABB, Siemens) and Austrian suppliers face 15%. Chinese large transformers face 40%. The US grid modernization program is straining global supply and driving reshoring interest.

Duty Rates by Country of Origin

🇨🇳
China
Section 301 (25%) + Section 122 (10%)
35%
🇩🇪
Germany
Section 122 only
10%
🇦🇹
Austria
Section 122 only
10%
🇮🇳
India
Section 122 only
10%

Common Part Numbers

ABB PowerTransformer 10MVASiemens GEAFOL 5MVASPX Transformer 30MVA

Key Manufacturers

ABBSiemensHitachi EnergyGE VernovaSPX TransformerWEG

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