Eaton Cooper Pearl 550 kVA Pad-Mounted Transformer
Eaton's Pearl series 550 kVA pad-mounted oil-filled transformer for underground residential distribution, using vegetable-based dielectric fluid. Its 550 kVA rating places it squarely in HTS 8504.21.00.80 for liquid dielectric units not exceeding 650 kVA.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If power capacity under 500 kVA
Lower kVA ratings fall into the preceding subheading within the same liquid dielectric category.
If static converter rather than transformer
Units functioning primarily as rectifiers or converters shift to 8504.4x headings.
If only the liquid dielectric tank imported separately
Transformer tanks without windings are classified as specific parts.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Include ANSI/IEEE C57 standards compliance docs; U.S. utilities require proof of dead-front design
• Document dielectric fluid type (mineral vs
• FR3 vegetable oil) as it affects environmental permits
• Avoid common pitfall of misstating impedance values, which must match nameplate for valuation
Related Products under HTS 8504.21.00.80
ABB TXS 550/33 kV Oil-Immersed Power Transformer
This liquid dielectric transformer from ABB has a power handling capacity of 600 kVA, designed for distribution substations with 33 kV input voltage. It uses mineral oil as the dielectric coolant and is rated for exceeding 500 kVA but not over 650 kVA, fitting precisely under HTS 8504.21.00.80.
Siemens GEAFOL 630 kVA Distribution Transformer
Siemens GEAFOL series oil-immersed transformer rated at 630 kVA for medium-voltage distribution networks up to 20 kV. Its liquid dielectric design and power capacity between 500-650 kVA qualify it directly under HTS 8504.21.00.80 for power grid applications.
Schneider Electric 15T55A 600 kVA Pole-Mounted Transformer
Schneider's 15T55A series single-phase pole transformer with 600 kVA capacity, oil-immersed for rural distribution lines at 7.2-14.4 kV. Classified under HTS 8504.21.00.80 due to its liquid dielectric and mid-range power handling.
GE Prolec 525 kVA Three-Phase Substation Transformer
GE Prolec three-phase oil-immersed transformer with 525 kVA rating for compact substations, handling 12.5-34.5 kV systems. Its liquid-cooled design and capacity fit HTS 8504.21.00.80 specifications perfectly.
Hammond Power Solutions 580 kVA Mineral Oil Transformer
Hammond's custom 580 kVA padmount transformer using conventional mineral oil dielectric for commercial campus distribution. Rated within 500-650 kVA, it matches HTS 8504.21.00.80 for liquid dielectric power transformers.