Chapter 8504 — Customs Tariff Headings

8504.2Liquid dielectric transformers:

8504.3Other transformers:

8504.40Static converters

8504.50.00Other inductors

8504.90Parts

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Products classified under Tariff item 85.04

Advance Transformer IMH-120-240DM Electronic Metal Halide Ballast

An electronic ballast designed to regulate power for metal halide discharge lamps, commonly used in high-bay commercial lighting such as gymnasiums and parking lots. It provides precise voltage and current control to initiate and stabilize the gas discharge within the lamp, which is the defining function of a ballast for discharge lamps under tariff item 8504.10.00.

EarthTronics Electronic CFL Ballast for Compact Fluorescent Lamps

A compact electronic ballast specifically designed for compact fluorescent lamps (CFLs), managing the starting and operation of the gas discharge within the tube. This product falls under tariff item 8504.10.00 because its sole function is to regulate the electrical supply to a discharge lamp, even though the lamp itself may be self-ballasted.

GE Lighting Luxtrol Magnetic HID Ballast

A traditional magnetic ballast used to regulate current for high-pressure sodium lamps in outdoor and industrial lighting. It operates by providing the necessary starting voltage and current limiting to sustain the arc discharge in the lamp, which qualifies it as a ballast for discharge lamps under tariff item 8504.10.00.

Howard Lighting HPB-150 Magnetic High Pressure Sodium Ballast

A heavy-duty magnetic ballast for high-pressure sodium lamps, used in security and pathway lighting. It regulates the electrical current to maintain a stable arc in the discharge tube, fulfilling the definition of a ballast for discharge lamps under tariff item 8504.10.00. Its weatherproof design is suitable for outdoor fixtures.

Lithonia Lighting EB-232-120 Electronic Ballast

An electronic ballast designed to operate two fluorescent T8 lamps, providing the necessary starting voltage and current regulation for the gas discharge. This product is classified under tariff item 8504.10.00 as it is specifically engineered for discharge lamps, with features like instant start and anti-striation technology to enhance lamp performance.

Osram QTi DALI Electronic Ballast for T5 Fluorescent Tubes

An electronic ballast with a DALI dimming interface, designed for T5 fluorescent tubes in commercial settings. It regulates the high-voltage start and low-frequency operation of the gaseous discharge, making it a ballast for discharge lamps under tariff item 8504.10.00. The dimming capability does not alter its primary function.

Philips Advance Mark III Electronic HID Ballast

An electronic ballast designed for high-intensity discharge (HID) lamps, including metal halide and high-pressure sodium types, used in industrial and commercial lighting. It regulates voltage and current to ensure stable operation of the discharge lamp, which is the core function of a ballast under tariff item 8504.10.00.

Sylvania Quicktronic ProStart Magnetic Ballast

A magnetic ballast engineered for instant-start T8 fluorescent tubes, providing stable operation for the discharge lamp in commercial fixtures. It is classified under tariff item 8504.10.00 because its dedicated role is to control the starting and running of gaseous discharge lamps, despite being a magnetic rather than electronic type.

Universal Lighting Technologies E-Ballast-35-TP Electronic Ballast

An electronic ballast for T12 and T8 fluorescent tubes, featuring parallel lamp operation for use in schools and other institutional settings. It controls the starting and running of gaseous discharge lamps, which qualifies it under tariff item 8504.10.00. The end-of-life protection feature enhances safety and reliability.

100 kVA Three-Phase Submersible Liquid Transformer

A three-phase submersible transformer with silicone-based liquid dielectric, rated at 100 kVA for underground vault installations. It provides 480V delta to 208Y/120V wye conversion. Classified under 8504.21.00 as a liquid dielectric transformer with capacity not exceeding 650 kVA.

10 kVA Single-Phase Overhead Transformer

A compact 10 kVA single-phase transformer using silicone liquid dielectric, designed for pole-top installation in overhead distribution networks. Its high fire point makes it suitable for populated areas. It falls under tariff item 8504.21.00 as a liquid dielectric transformer with a power handling capacity not exceeding 650 kVA.

15 kVA Pad-Mounted Liquid-Filled Distribution Transformer

A 15 kVA pad-mounted distribution transformer using mineral oil as a liquid dielectric, designed for outdoor utility distribution in residential areas. It steps down voltage from primary distribution levels to utilization voltages. Classified under 8504.21.00 as a liquid dielectric transformer with capacity not exceeding 650 kVA.

20 kVA Vegetable Ester Fluid Transformer

An environmentally friendly 20 kVA transformer using vegetable ester dielectric fluid (FR3), suitable for indoor or outdoor padmount applications with high fire safety requirements. The biodegradable fluid offers an alternative to mineral oil. It is classified under 8504.21.00 as a liquid dielectric transformer with power handling capacity not exceeding 650 kVA.

25 kVA Pole-Mounted Mineral Oil Transformer

A single-phase pole-mounted transformer filled with mineral oil dielectric, rated at 25 kVA for rural and urban overhead distribution systems. It converts high-voltage distribution to lower utilization voltages. Classified under 8504.21.00 as a liquid dielectric transformer with capacity not exceeding 650 kVA.

25 kVA Silicone Fluid Fire-Safe Transformer

A high fire-point silicone dielectric fluid transformer rated 25 kVA for locations prohibiting mineral oil, such as hospitals and tunnels. It offers a less flammable alternative meeting NFPA standards. Classified under 8504.21.00 as a liquid dielectric transformer with capacity not exceeding 650 kVA.

30 kVA Three-Phase Padmount Transformer

A three-phase liquid-filled pad-mounted transformer with 30 kVA capacity using vegetable oil dielectric for underground residential distribution (URD). It provides balanced power to multi-unit buildings. Classified under 8504.21.00 as a liquid dielectric transformer with capacity not exceeding 650 kVA.

37.5 kVA Loop-Feed Padmount Transformer

A dual voltage 37.5 kVA pad-mounted transformer with mineral oil dielectric, featuring loop-feed design for radial distribution systems allowing service continuity. It is common in commercial complexes. Classified under 8504.21.00 as a liquid dielectric transformer with capacity not exceeding 650 kVA.

45 kVA Mineral Oil Distribution Transformer

A conventional 45 kVA liquid-filled distribution transformer using mineral oil, designed for substation or pole mounting in medium-density areas. It steps down 13.8 kV to 240/480V. Classified under 8504.21.00 as a liquid dielectric transformer with capacity not exceeding 650 kVA.

50 kVA Single-Phase Conventional Transformer

A maximum capacity 50 kVA single-phase mineral oil transformer for light commercial service drops, pole or pad mountable. It operates at standard distribution voltages of 7.2kV to 240V. Classified under 8504.21.00 as a liquid dielectric transformer with capacity not exceeding 650 kVA.

55 kVA Underground Residential Distribution Transformer

A URD transformer with ester fluid dielectric, 55 kVA for looped underground residential systems. It converts 15 kV to 240/480V. Classified under 8504.21.00 as a liquid dielectric transformer with capacity not exceeding 650 kVA.

5 kVA Control Transformer with Mineral Oil

A small 5 kVA liquid dielectric transformer for industrial control panels and motor starters, using mineral oil cooling. It provides stable voltage for PLC and relay systems. Classified under 8504.21.00 as a liquid dielectric transformer with capacity not exceeding 650 kVA.

60 kVA Single-Phase Pole-Mounted Oil Transformer

A single-phase pole-mounted transformer filled with mineral oil dielectric, rated at 60 kVA for rural power distribution. It converts overhead 7.2 kV to 120/240V single-phase service. Classified under 8504.21.00 as a liquid dielectric transformer with capacity not exceeding 650 kVA.

65 kVA FR3 Fluid-Filled Padmount Transformer

An environmentally friendly padmount transformer using FR3 vegetable oil dielectric, 65 kVA capacity for urban distribution networks. It steps down 34.5 kV to 600V. Classified under 8504.21.00 as a liquid dielectric transformer with capacity not exceeding 650 kVA.

70 kVA Silicone Liquid Power Transformer

A high-fire-point silicone liquid cooled power transformer, 70 kVA rating for indoor substation applications. It provides reliable voltage transformation with superior fire safety. Classified under 8504.21.00 as a liquid dielectric transformer with capacity not exceeding 650 kVA.

75 kVA Pad-Mounted Liquid Dielectric Transformer

A 75 kVA pad-mounted transformer using mineral oil as a liquid dielectric, designed for underground distribution in residential areas. It steps down voltage from 13.8 kV to 240/480V, making it essential for safe power delivery in neighbourhoods. This falls under tariff item 8504.21.00 as a liquid dielectric transformer with a power handling capacity not exceeding 650 kVA.

80 kVA Mineral Oil Distribution Transformer

An 80 kVA mineral oil-immersed distribution transformer with a 13.2 kV primary and 480V secondary, designed for padmount installation in commercial complexes. The liquid dielectric cooling system ensures efficient operation and longevity. It is classified under 8504.21.00 because it is a liquid dielectric transformer with a capacity under 650 kVA.

85 kVA Loop-Feed Pad-Mounted Transformer

An 85 kVA loop-feed pad-mounted transformer with mineral oil dielectric, featuring radial and loop switching for municipal street lighting circuits. Its dual voltage capability enhances grid flexibility. This product is classified under 8504.21.00 as a liquid dielectric transformer not exceeding 650 kVA.

90 kVA Delta-Wye Oil-Immersed Transformer

A three-phase oil-immersed transformer rated at 90 kVA with a delta primary and wye secondary configuration, suitable for commercial buildings. It uses liquid dielectric cooling for 12.47 kV to 480Y/277V conversion. This falls under 8504.21.00 due to its liquid dielectric and capacity under 650 kVA.

ABB TX 250 kVA Pad-Mounted Transformer

An ABB TX 250 kVA pad-mounted transformer with liquid dielectric oil, designed for underground distribution in residential and commercial areas. It steps down medium voltage to low voltage, ensuring reliable power supply. This product is classified under 8504.21.00 as a liquid dielectric transformer with a capacity not exceeding 650 kVA.

Acme Electric 125 kVA Enclosed Transformer

An Acme Electric 125 kVA enclosed transformer with NEMA 3R rating, oil-filled for commercial building service entrances. It provides reliable power distribution in outdoor environments. This is classified under 8504.21.00 as a liquid dielectric transformer with a capacity under 650 kVA.

Commercial Three-Phase Transformer 300 kVA

A 300 kVA three-phase liquid dielectric transformer, mineral oil filled, designed for light industrial use. It converts 480V delta input to 208Y/120V wye output, making it suitable for commercial and industrial power distribution. Its power handling capacity does not exceed 650 kVA, so it falls under tariff item 8504.21.00.

Conventional Pole Transformer 37.5 kVA

A 37.5 kVA conventional mineral oil pole transformer, a common utility size for residential and light commercial distribution. It operates with a 7200/12470V primary and steps down to standard secondary voltages. As a liquid dielectric transformer under 650 kVA, it is classified under tariff item 8504.21.00.

Dead-Front Transformer 50 kVA

A 50 kVA pad-mounted dead-front transformer using less-flammable dielectric fluid, designed for underground distribution systems. It features safer elbow connectors for underground service and meets utility safety standards. With a capacity under 650 kVA and liquid dielectric, it falls under tariff item 8504.21.00.

Distribution Class Transformer 45 kVA

A 45 kVA conventional mineral oil filled single-phase distribution transformer for pole mounting, standard utility-grade with lightning arrestors. It steps down distribution voltages for residential and rural electrification. As a liquid dielectric transformer under 650 kVA, it is classified under tariff item 8504.21.00.

Eaton Cooper Pearl 200 kVA Three-Phase Transformer

An Eaton Cooper Pearl 200 kVA three-phase liquid-filled transformer in a Pearl™ enclosure, using mineral oil dielectric for commercial power distribution. It ensures efficient and safe voltage transformation. This product falls under 8504.21.00 as a liquid dielectric transformer not exceeding 650 kVA.

Howard Industries 400 kVA Pole-Mounted Transformer

A Howard Industries 400 kVA single-phase pole-mounted transformer with oil dielectric for rural power distribution lines. It provides reliable voltage transformation in remote areas. This is classified under 8504.21.00 as a liquid dielectric transformer with a capacity under 650 kVA.

Loop-Feed Transformer 100 kVA

A 100 kVA dual-voltage single-phase transformer for loop-feed underground systems, oil-immersed, allowing radial or loop operation. It provides flexibility for underground distribution networks. With a capacity under 650 kVA and liquid dielectric, it falls under tariff item 8504.21.00.

MGM Transformer 450 kVA Industrial Rectifier Transformer

An MGM Transformer 450 kVA liquid-cooled transformer designed for electrolytic rectifier applications in industrial plants. It ensures stable power supply for demanding processes. This product falls under 8504.21.00 as a liquid dielectric transformer with a capacity not exceeding 650 kVA.

Mid-Range Padmount Transformer 500 kVA

A 500 kVA three-phase pad-mounted unit with natural ester dielectric fluid for underground commercial service, rated for 34.5 kV primary. It provides an eco-friendly alternative to mineral oil with a high fire point. Its capacity under 650 kVA places it under tariff item 8504.21.00.

Mineral Oil Distribution Transformer 75 kVA

A 75 kVA three-phase mineral oil transformer for neighborhood distribution, 13.2 kV class with conventional cooling. It steps down medium voltage for residential and light commercial use. As a liquid dielectric transformer under 650 kVA, it is classified under tariff item 8504.21.00.

Pad-Mounted Single-Phase Transformer 25 kVA

A liquid dielectric transformer designed for underground distribution systems, rated at 25 kVA for residential power delivery. It uses mineral oil as the dielectric and steps down medium voltage to 120/240V single-phase. With a capacity under 650 kVA, it falls under tariff item 8504.21.00.

Pole-Mounted Distribution Transformer 50 kVA

A single-phase pole-mount transformer with mineral oil dielectric for utility pole installation, rated 50 kVA. It converts 7.2 kV to 120/240V for rural electrification. As a liquid dielectric transformer under 650 kVA, it is classified under tariff item 8504.21.00.

Residential Oil-Filled Transformer 100 kVA

A single-phase 100 kVA transformer with mineral oil immersion for suburban power distribution, featuring a dead-front design for safety. It steps down medium voltage for residential and small commercial use. With a capacity under 650 kVA and liquid dielectric, it falls under tariff item 8504.21.00.

Schneider Electric 150 kVA Substation Transformer

A Schneider Electric 150 kVA oil-immersed transformer for indoor/outdoor substations, with liquid dielectric and customizable voltage ratios. It provides flexible power distribution solutions. This is classified under 8504.21.00 as a liquid dielectric transformer with a capacity under 650 kVA.

Self-Protected Transformer 25 kVA

A 25 kVA single-phase pole transformer with integrated bay-o-net fusing and mineral oil dielectric. The self-protected design reduces external protection needs, making it suitable for utility distribution. As a liquid dielectric transformer under 650 kVA, it is classified under tariff item 8504.21.00.

Silicone Fluid Transformer 150 kVA

A 150 kVA single-phase transformer with silicone dielectric fluid for extreme temperature operation (-50°C to 110°C), used in harsh environments. The silicone fluid provides high fire safety and thermal stability. With a capacity under 650 kVA, it falls under tariff item 8504.21.00.

Three-Phase Padmount Transformer 75 kVA

A 75 kVA three-phase liquid-filled transformer for commercial pad-mount applications, using vegetable oil dielectric. It steps down 12.47 kV to 208Y/120V for commercial use. As a liquid dielectric transformer under 650 kVA, it is classified under tariff item 8504.21.00.

Utility Single-Phase Transformer 167 kVA

A 167 kVA pole-top transformer using silicone-based liquid dielectric for overhead lines, handling 14.4 kV primary to secondary service voltage. The silicone fluid provides high fire safety for populated areas. With a capacity under 650 kVA, it falls under tariff item 8504.21.00.

Vegetable Oil Transformer 250 kVA

An eco-friendly 250 kVA three-phase transformer using vegetable-based dielectric oil, with a fire point exceeding 300°C for indoor use. It provides a sustainable alternative to mineral oil with enhanced fire safety. With a capacity under 650 kVA, it is classified under tariff item 8504.21.00.

ABB TX Panorama 1000 kVA Oil-Immersed Distribution Transformer

This liquid dielectric transformer uses mineral oil insulation and has a power handling capacity of 1000 kVA, ideal for utility substations and industrial power distribution. It falls under tariff item 8504.22.00 because it exceeds 650 kVA but does not exceed 10,000 kVA.

ABB TX Panorama 1500 kVA Oil-Immersed Distribution Transformer

This is a liquid dielectric transformer using mineral oil as insulation, with a power handling capacity of 1500 kVA. It falls under tariff item 8504.22.00 because it exceeds 650 kVA but does not exceed 10,000 kVA, and uses a liquid dielectric.

ABB TX Panorama 5MVA Oil-Immersed Power Transformer

A 5,000 kVA liquid dielectric transformer using mineral oil as insulation, suitable for substation step-up applications in utility grids. Its power handling capacity within the 650 kVA to 10,000 kVA range and liquid dielectric design classify it under tariff item 8504.22.00.

Eaton Cooper 7MVA Mineral Oil Power Transformer

A 7,000 kVA three-phase power transformer with forced-air cooling fans and mineral oil insulation for industrial applications. Its liquid dielectric construction and power handling capacity between 650 kVA and 10,000 kVA place it under tariff item 8504.22.00.

Eaton Cooper Pearl 2000 kVA Three-Phase Oil Transformer

This 2000 kVA three-phase transformer with mineral oil dielectric serves industrial facilities requiring reliable medium-voltage power stepping. It meets tariff item 8504.22.00 criteria for liquid-filled units with capacity exceeding 650 kVA but not exceeding 10,000 kVA.

Eaton Cooper Pearl 2500 kVA Three-Phase Substation Transformer

This three-phase oil-immersed transformer is rated at 2500 kVA and is used for primary substation applications, converting 69 kV to 13.2 kV. Its liquid dielectric design and capacity within the 650-10,000 kVA range place it under tariff item 8504.22.00.

GE 2200 kVA Oil Immersed Pole-Mounted Transformer

This large pole-mounted 2200 kVA oil transformer is designed for rural distribution lines with high overload capacity. Tariff item 8504.22.00 applies due to its liquid dielectric and 650-10,000 kVA rating.

General Electric PowerVac 6.3MVA Substation Transformer

A 6,300 kVA oil-immersed transformer for high-voltage substations, featuring a conservator tank and nitrogen blanketing system. Its liquid dielectric design and power handling capacity within the 650 kVA to 10,000 kVA range classify it under tariff item 8504.22.00.

GE Prolec 4000 kVA Power Transformer for Industrial Plants

This is a heavy-duty 4000 kVA oil-filled transformer designed for steel mills and manufacturing facilities, handling 230 kV primary voltage. It meets the criteria for tariff item 8504.22.00 as a liquid dielectric unit with power handling capacity between 650 and 10,000 kVA.

Hitachi 1600 kVA Industrial Rectifier Transformer

This specialized 1600 kVA oil transformer with DC ripple filtering is designed for electrolytic plant rectifiers. It falls under tariff item 8504.22.00 as a liquid-cooled power transformer in the specified kVA range of 650-10,000 kVA.