ABB UniGear ZS1 Medium Voltage Switchgear Assembly
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If rated for voltage not exceeding 1,000 V
Voltage threshold determines subheading; low-voltage assemblies fall under 8537.10
If primarily for telecommunications switching
Switching apparatus of heading 8517 excludes general power distribution switchgear
If sold as individual control panels rather than complete assemblies
Separate boards/panels not forming complete switchgear bases classify under 8538
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Import Tips & Compliance
• 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
Related Products under HTS 8537.20.00.20
Schneider Electric Premset Air-Insulated Switchgear
Schneider Premset is an air-insulated withdrawable switchgear assembly rated above 1,000 V, featuring circuit breakers, earthing switches, and metering instruments from chapters 85 and 90. Designed for underground substations and industrial applications. Classified in 8537.20.00.20 for its complete switchboard configuration.
Toshiba TCS Switchboard Assembly
Toshiba TCS series switchboard combines air circuit breakers (8536), molded case switches (8535), and instrumentation for high-voltage distribution over 1,000 V. Used in power plants and heavy industry. Properly classified under 8537.20.00.20 as equipped base with multiple apparatus.
GE SecoGear SF6 Switchgear
GE SecoGear is a SF6-insulated switchgear assembly rated 12-24 kV, featuring load break switches, vacuum circuit breakers, and digital protection relays mounted on common base. For utility distribution networks. 8537.20.00.20 classification due to voltage and multi-apparatus integration.
Siemens NXPLUS C Gas-Insulated Switchgear Panel
Siemens NXPLUS C is a SF6 gas-insulated switchgear assembly for voltages over 1,000 V, incorporating vacuum circuit breakers (8536) and protective relays (8535) in a compact metal housing. Used in urban substations for reliable power distribution. Falls under 8537.20.00.20 as a complete switchboard with multiple control/distribution apparatus.
Eaton Power Xpert UX MV Switchgear Assembly
Eaton Power Xpert UX is a front-accessible metal-clad switchgear for voltages exceeding 1,000 V, integrating vacuum interrupters, relays, and busbars for electrical distribution. Suitable for commercial buildings and utilities. Meets 8537.20.00.20 criteria with multiple 8535/8536 components in switchboard form.
Mitsubishi Electric VCB Switchgear Panel
Mitsubishi vacuum circuit breaker switchgear panels for voltages >1,000 V integrate VCBs (8536), current transformers, and numerical relays (8535) in modular cubicles. Applied in manufacturing facilities. Classified 8537.20.00.20 for complete distribution assembly.