ABB UniGear ZS1 Medium Voltage Switchgear Assembly from Japan

The ABB UniGear ZS1 is a metal-enclosed switchgear assembly rated for voltages exceeding 1,000 V, equipped with circuit breakers, disconnectors, and protective relays from headings 8536 and 8535. It is designed for power distribution in industrial plants and substations, providing control and protection functions. Classified under 8537.20.00.20 due to its voltage rating and integration of multiple switching/protective devices.

Duty Rate — Japan → United States

15%

Rate breakdown

9903.94.4315%Parts of passenger vehicles and light trucks that are products of Japan as provided for in subdivision (l) of U.S. note 33 to this subchapter, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 15 percent as provided for in subdivision (m) of U.S. note 33 to this subchapter.
9903.03.060%Articles of iron or steel, derivative articles of iron or steel, articles of aluminum, derivative articles of aluminum, passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks and parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks, semiconductor articles, semi-finished copper and intensive copper derivative products, wood products, or medium- and heavy-duty vehicles or medium- and heavy-duty vehicle parts, of any country, as provided in subdivision (aa)(v) of U.S. note 2 to this subchapter

Import Tips

Verify voltage rating exceeds 1,000 V and document integrated 8535/8536 apparatus to confirm 8537.20 classification

Obtain manufacturer's test certificates for arc resistance and short-circuit withstand to meet NEC/UL standards

Avoid misclassification as low-voltage panels (8537.10); check for proper IP rating documentation