Having a power handling capacity exceeding 16 kVA but not exceeding 50 kVA
Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: > Other transformers: > Having a power handling capacity exceeding 16 kVA but not exceeding 500 kVA > Having a power handling capacity exceeding 16 kVA but not exceeding 50 kVA
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Products classified under HTS 8504.33.00.20
18 kVA Marine Step-Down Transformer
18 kVA dry-type step-down transformer for shipboard use, 440V to 230V, IP56 enclosure with epoxy coating for saltwater environments. Meets ABS/DNV standards, HTS 8504.33.0020 for power capacity.
22 kVA Data Center UPS Transformer
22 kVA isolation transformer for online UPS systems in data centers, 208V to 120V with <3% impedance for clean power. Epoxy-filled for quiet operation, under HTS 8504.33.0020.
30 kVA Single-Phase Pole-Mount Distribution Transformer
This oil-immersed, single-phase transformer is designed for pole mounting in residential and rural electrical distribution systems, with a power handling capacity of 30 kVA at 7.2/124.7 kV primary voltage. It steps down medium voltage to 120/240V secondary for homes and small loads, falling under HTS 8504.33.0020 due to its capacity exceeding 16 kVA but not 50 kVA. Features include lightning arrestors and temperature protection for outdoor reliability.
25 kVA Pad-Mount Three-Phase Transformer
A three-phase, pad-mounted transformer rated at 25 kVA for underground residential distribution (URD), converting 12.47 kV to 208Y/120V. Enclosed in a tamper-resistant tank with radial bushings, it meets IEEE C57.12.34 standards and qualifies for HTS 8504.33.0020 based on its 16-50 kVA capacity. Ideal for apartment complexes and commercial pads.
40 kVA Dry-Type Ventilation Transformer
Dry-type transformer rated 40 kVA, 480V delta primary to 208Y/120V secondary, with NEMA 3R enclosure for HVAC and ventilation systems in commercial buildings. Lacks liquid insulation, using epoxy-resin windings for fire safety, classified in HTS 8504.33.0020 for its mid-range power capacity. Meets UL 1561 standards for indoor/outdoor use.
20 kVA Solar Inverter Transformer
Isolation transformer for grid-tie solar inverters, 20 kVA at 600V, galvanically isolating DC-AC conversion to prevent ground faults. Toroidal core design reduces harmonics, qualifying under HTS 8504.33.0020 for 16-50 kVA power handling in renewable energy systems.
35 kVA Industrial Furnace Transformer
Three-phase furnace transformer 35 kVA, 480V to 95V secondary for resistance heating elements in metal annealing furnaces. Copper windings with Class K insulation for high-temperature environments, under HTS 8504.33.0020 due to power rating.
45 kVA Buck-Boost Transformer
45 kVA buck-boost autotransformer for voltage correction in commercial lighting and motor circuits, adjustable taps from 208-240V to 120V. Single-unit design saves space, classified HTS 8504.33.0020 for capacity range.
50 kVA Amorphous Core Distribution Transformer
Three-phase 50 kVA pole-type transformer with amorphous metal core for 15-20% efficiency gains over traditional silicon steel. 13.2 kV primary, DOE 2016 compliant, exactly at HTS 8504.33.0020 upper capacity limit.
28 kVA Elevator Drive Transformer
28 kVA K13-rated transformer for VFD elevator drives, handling harmonic loads from 480V to multi-tap secondary. Dry-type with 220% overload capacity, HTS 8504.33.0020 classification.