Chapter 8535 — Customs Tariff Headings

8535.2Automatic circuit breakers:

8535.30.00Isolating switches and make-and-break switches

8535.40.00Lightning arresters, voltage limiters and surge suppressors

8535.90Other

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Products classified under Tariff item 85.35

ABB CEF22-22 Medium Voltage Fuse

A medium voltage fuse rated for 12kV systems, designed to protect transformers and switchgear by interrupting fault currents exceeding 1,000V. It is classified under tariff item 8535.10.00 as a fuse for electrical circuits operating at voltages over 1,000 volts.

Bussmann Series 170M6010 High-Speed Fuse

A high-speed stud-mount fuse rated for 1.5kV DC traction systems, designed for rapid interruption of fault currents. This fuse operates at voltages exceeding 1,000 volts and is classified under tariff item 8535.10.00 as a fuse for high-voltage electrical circuits.

Eaton Cooper Power Series Current-Limiting Fuse

A current-limiting fuse designed for 15.5kV distribution systems, protecting underground cables and pad-mounted transformers from overloads. It is classified under tariff item 8535.10.00 as a fuse for electrical circuits operating at voltages exceeding 1,000 volts.

Ferraz Shawmut Tri-Onic 12.5kV Fuse

A backup fuse for 12.5kV motor circuits, featuring dual-element time-delay construction for coordinated protection. This fuse operates at voltages exceeding 1,000 volts and is classified under tariff item 8535.10.00 as a fuse for high-voltage electrical circuits.

GE Grid Solutions 38kV Fuse

A 38kV distribution class fuse designed for utility pole-mounted equipment, capable of interrupting high fault currents. This fuse operates at voltages exceeding 1,000 volts and is classified under tariff item 8535.10.00 as a fuse for high-voltage electrical circuits.

Hubbell Elastimold 8.7kV Fuse

A polymeric fuse for 8.7kV underground distribution systems, featuring a weather-resistant design for reliable operation. This fuse operates at voltages exceeding 1,000 volts and is classified under tariff item 8535.10.00 as a fuse for high-voltage electrical circuits.

Littelfuse Medium Voltage Semiconductor Fuse

A square-body fuse protecting variable frequency drives at 6.6kV, designed for semiconductor protection in high-voltage applications. This fuse operates at voltages exceeding 1,000 volts and is classified under tariff item 8535.10.00 as a fuse for high-voltage electrical circuits.

Mersen 24kV Power Fuse

A 24kV rated full-range fuse for protecting motors and capacitors in substations, designed for high-voltage circuit protection. This fuse operates at voltages exceeding 1,000 volts and is classified under tariff item 8535.10.00 as a fuse for high-voltage electrical circuits.

Mitsubishi Electric MV Fuse

A 24kV fuse series designed for Japanese switchgear standards, JIS certified for high-voltage circuit protection. This fuse operates at voltages exceeding 1,000 volts and is classified under tariff item 8535.10.00 as a fuse for high-voltage electrical circuits.

Parker Hannifin Hydraulic Circuit Fuse 3.6kV

A 3.6kV fuse designed for electro-hydraulic servo systems in industrial presses, providing overcurrent protection in high-voltage applications. This fuse operates at voltages exceeding 1,000 volts and is classified under tariff item 8535.10.00 as a fuse for high-voltage electrical circuits.

S&C Electric SM-4 Fuse

A 34.5kV fuse series for padmount switchgear, offering superior current limitation for high-voltage distribution systems. This fuse operates at voltages exceeding 1,000 volts and is classified under tariff item 8535.10.00 as a fuse for high-voltage electrical circuits.

Schneider Electric Masterpact HV Fuse

A withdrawable fuse for 12kV air-insulated panels, designed for high-voltage circuit protection in switchgear applications. This fuse operates at voltages exceeding 1,000 volts and is classified under tariff item 8535.10.00 as a fuse for high-voltage electrical circuits.

Siemens 15kV Expulsion Fuse Link

An expulsion-type fuse link for overhead distribution lines rated at 15kV, expelling gases to interrupt faults. This fuse operates at voltages exceeding 1,000 volts and is classified under tariff item 8535.10.00 as a fuse for high-voltage electrical circuits.

Thomas & Betts 5kV Distribution Fuse

A 5kV cutout fuse for rural utility distribution, designed for pole mounting and overcurrent protection. This fuse operates at voltages exceeding 1,000 volts and is classified under tariff item 8535.10.00 as a fuse for high-voltage electrical circuits.

Toshiba High-Voltage Blade Fuse

A clip-type blade fuse for 7.2kV switchgear, providing fast-acting protection for high-voltage electrical circuits. This fuse operates at voltages exceeding 1,000 volts and is classified under tariff item 8535.10.00 as a fuse for high-voltage electrical circuits.

ABB Emax 2 Air Circuit Breaker 1600A

The ABB Emax 2 is an automatic air circuit breaker designed for industrial power distribution systems, rated for voltages up to 72.5 kV and currents up to 1600A. It provides protection against overloads and short circuits, making it suitable for use in electrical circuits exceeding 1,000 volts. This product falls under tariff item 8535.21.00 as an automatic circuit breaker for voltages less than 72.5 kV.

ABB VD4 24kV Vacuum Circuit Breaker

The ABB VD4 is a withdrawable vacuum circuit breaker rated at 24 kV, designed for indoor metal-clad switchgear applications. It uses pole-mounted vacuum bottles for arc quenching and includes an electronic control cubicle. As an automatic circuit breaker for voltages less than 72.5 kV, it falls under tariff item 8535.21.00.

Cutler-Hammer Series C Medium Voltage Breaker

The Cutler-Hammer Series C is a medium voltage automatic circuit breaker rated up to 38 kV, featuring flux transfer trip units and designed for draw-out metal-clad switchgear. It provides circuit protection for voltages exceeding 1,000 volts. This product is classified under tariff item 8535.21.00 as an automatic circuit breaker for voltages less than 72.5 kV.

Eaton Magnum DS 2500A Molded Case Circuit Breaker

The Eaton Magnum DS is a molded case automatic circuit breaker rated at 2500A for voltages up to 72.5 kV, with adjustable electronic trip protection. It is used in industrial panels and motor control centers. As an automatic circuit breaker for voltages less than 72.5 kV, it falls under tariff item 8535.21.00.

GE Powerbreak II ML-1600 Vacuum Circuit Breaker

The GE Powerbreak II ML-1600 is a vacuum-type automatic circuit breaker for medium voltage distribution up to 72.5 kV, using vacuum interrupters for arc quenching in metal-clad switchgear. It provides reliable circuit protection for voltages exceeding 1,000 volts. This product is classified under tariff item 8535.21.00 for automatic circuit breakers under 72.5 kV.

G&W Viper-ST 15kV Solid Dielectric Switch

The G&W Viper-ST is a single tank automatic circuit interrupter rated at 15.2 kV with solid dielectric insulation and electronic recloser controls for underground vaults. It provides fault interruption and restoration for electrical circuits. As an automatic circuit breaker for voltages less than 72.5 kV, it falls under tariff item 8535.21.00.

Hyundai IAS ILM6 15kV Vacuum Breaker

The Hyundai IAS ILM6 is a vacuum circuit breaker rated at 15 kV, with a front-connected drawout design for switchgear and permanent magnet actuators. It provides automatic circuit protection for voltages exceeding 1,000 volts. This product is classified under tariff item 8535.21.00 for automatic circuit breakers under 72.5 kV.

Mitsubishi NF-LV4000 Low Voltage Air Breaker

The Mitsubishi NF-LV4000 is an air circuit breaker rated up to 72.5 kV with microprocessor trip units for selective coordination, used in commercial buildings and data centers. It provides automatic circuit protection for voltages exceeding 1,000 volts. As an automatic circuit breaker for voltages less than 72.5 kV, it falls under tariff item 8535.21.00.

NOJA Power OSM Recloser 15.5kV Automatic Breaker

The NOJA Power OSM is an automatic circuit recloser rated at 15.5 kV for overhead distribution lines, featuring vacuum interrupters and user-configurable protection logic. It combines breaker and recloser functionality for fault protection. This product is classified under tariff item 8535.21.00 as an automatic circuit breaker for voltages less than 72.5 kV.

S&C Custom Credit 27kV Vacuum Fault Interrupter

The S&C Custom Credit is a 27 kV automatic vacuum fault interrupter with microprocessor-based controls for underground distribution, providing three-phase tripping and fault detection. It offers circuit protection for voltages exceeding 1,000 volts. As an automatic circuit breaker for voltages less than 72.5 kV, it falls under tariff item 8535.21.00.

Schneider Electric MasterPact MTZ 4000A Breaker

The Schneider Electric MasterPact MTZ is an automatic circuit breaker rated at 4000A for voltages under 72.5 kV, featuring digital microprocessor-based protection relays. It is ideal for utility and commercial power systems. As an automatic circuit breaker for voltages less than 72.5 kV, it falls under tariff item 8535.21.00.

Siemens 3WL Air Circuit Breaker 3200A

The Siemens 3WL is an automatic circuit breaker for medium voltage applications up to 72.5 kV, handling 3200A continuous current with electronic trip units. It is used in substations and heavy industry for fault protection. This product is classified under tariff item 8535.21.00 for automatic circuit breakers under 72.5 kV.

Square D Masterpact NW 6300A Low Voltage Breaker

The Square D Masterpact NW is an automatic low voltage power circuit breaker rated at 6300A up to 72.5 kV, with PowerLogic control units for advanced metering and protection. It provides circuit protection for voltages exceeding 1,000 volts. This product is classified under tariff item 8535.21.00 for automatic circuit breakers under 72.5 kV.

Toshiba T-Fuji Vacuum Circuit Breaker 15kV 1200A

The Toshiba T-Fuji is a vacuum circuit breaker rated at 15 kV and 1200A continuous, providing automatic protection for distribution substations with magnetic actuator technology for fast operation. It is designed for voltages exceeding 1,000 volts. As an automatic circuit breaker for voltages less than 72.5 kV, it falls under tariff item 8535.21.00.

Westinghouse K-Line 2000A Medium Voltage Breaker

The Westinghouse K-Line is a legacy automatic circuit breaker rated at 2000A for 15 kV systems, featuring a stored energy mechanism for reliable operation. It is used in legacy industrial installations for circuit protection. This product is classified under tariff item 8535.21.00 for automatic circuit breakers under 72.5 kV.

ABB Emax 2 Power Circuit Breaker

The ABB Emax 2 is a withdrawable air circuit breaker rated for 3200A at up to 690V AC, designed for power distribution panels in commercial buildings. It falls under tariff item 8535.29.00 as an automatic circuit breaker for voltages exceeding 1,000 volts, meeting the 'other' category for such breakers.

ABB SF6 Gas-Insulated Circuit Breaker 420kV

The ABB SF6 Gas-Insulated Circuit Breaker is designed for 420kV transmission lines to protect against overcurrents and short circuits. It falls under 8535.29.00 as an automatic circuit breaker for voltages exceeding 1,000V, specifically for high-voltage transmission applications.

Alstom/Areva 525kV Tank Circuit Breaker

The Alstom/Areva 525kV Tank Circuit Breaker is an SF6 tank-type breaker for high-capacity transmission corridors. It meets 8535.29.00 as an automatic circuit breaker for voltages exceeding 1,000V, with a compact design for substation applications.

Cutler-Hammer CH Frame MCCB 1200A

The Cutler-Hammer CH Frame MCCB is a 1200A molded case circuit breaker rated at 690V, used for marine propulsion systems. It is classified under 8535.29.00 as an automatic circuit breaker for voltages exceeding 1,000V, despite the lower voltage rating, as the tariff item covers 'other' breakers in this category.

Eaton Power Defense MCCB 1600AF

The Eaton Power Defense MCCB is a 1600A frame molded case circuit breaker rated for 600V-690V, used in data center electrical distribution. It falls under 8535.29.00 as an automatic circuit breaker for voltages exceeding 1,000V, with zone-selective interlocking features for enhanced protection.

GE AKR-50S Air Circuit Breaker

The GE AKR-50S is a fixed-mount air circuit breaker rated at 2000A and 635V AC, used in utility substations. It is classified under 8535.29.00 as an automatic circuit breaker for voltages exceeding 1,000V, featuring a Digitrip RMS trip system for reliable protection.

GE Grid Solutions HVB-550kV Live Tank Circuit Breaker

The GE Grid Solutions HVB-550kV Live Tank Circuit Breaker operates at 550kV with a spring-hydraulic mechanism for ultra-high voltage transmission lines. It falls under 8535.29.00 as an automatic circuit breaker for voltages exceeding 1,000V, featuring fast interruption capabilities.

Hyundai IHGB-I High Voltage MCCB

The Hyundai IHGB-I series is a molded case circuit breaker rated at 3200A and 1000V DC, designed for electric vehicle charging stations. It falls under 8535.29.00 as an automatic circuit breaker for voltages exceeding 1,000V, providing critical protection for EV infrastructure.

LS Electric Susol SUS4000 ACB

The LS Electric Susol SUS4000 is an air circuit breaker rated at 4000A and 690V AC/DC, used in solar power inverters. It is classified under 8535.29.00 as an automatic circuit breaker for voltages exceeding 1,000V, suitable for high-voltage renewable energy applications.

Mitsubishi LVCB Low Voltage Circuit Breaker

The Mitsubishi LVCB is a 2500AF frame circuit breaker rated at 6600V and 2000A, used in power plants. It falls under 8535.29.00 as an automatic circuit breaker for voltages exceeding 1,000V, featuring vacuum interrupters for reliable high-voltage protection.

Schneider Electric Masterpact MTZ Air Circuit Breaker

The Schneider Electric Masterpact MTZ is a high-performance air circuit breaker rated at 6300A and 1000V DC/690V AC, used in heavy industrial applications like mining. It qualifies under 8535.29.00 as an automatic circuit breaker for voltages exceeding 1,000V, offering advanced protection features.

Siemens Sentron 3VA2 Molded Case Circuit Breaker

The Siemens Sentron 3VA2 is a three-pole molded case automatic circuit breaker rated for 1600A at 690V AC, designed for industrial motor control centers. It falls under 8535.29.00 as an automatic circuit breaker for voltages exceeding 1,000V, providing reliable overload and short-circuit protection.

Square D QO Frame High Voltage Breaker

The Square D QO Frame High Voltage Breaker is a molded case breaker with an 800A rating at 600V-690V, used for commercial HVAC systems. It is classified under 8535.29.00 as an automatic circuit breaker for voltages exceeding 1,000V, designed for high-voltage applications.

Terasaki Temple High Voltage ACB

The Terasaki Temple air circuit breaker is rated at 4000A and 6600V, used in heavy industry rolling mills. It falls under 8535.29.00 as an automatic circuit breaker for voltages exceeding 1,000V, featuring advanced arc chute technology for high-voltage protection.

Toshiba TQB High Voltage Breaker

The Toshiba TQB series is an air circuit breaker rated at 6300A and 7200V, used for railway electrification systems. It is classified under 8535.29.00 as an automatic circuit breaker for voltages exceeding 1,000V, providing reliable protection for rail transit applications.

12kV Oil-Immersed Knife Switch

The 12kV oil-immersed knife switch is designed for immersion in transformer oil, providing superior arc quenching for high-voltage applications. Its blade mechanism ensures reliable make-and-break above 1,000V in oil-filled enclosures, classifying it under tariff item 8535.30.00.

15kV Gang-Operated Air Break Knife Switch

The 15kV gang-operated air break knife switch is used in overhead power distribution lines to isolate sections of the circuit. It features multiple blades that open and close simultaneously for safe make-and-break operations above 1,000V, falling under tariff item 8535.30.00.

24kV Hook-Operated Distribution Knife Switch

The 24kV hook-operated knife switch is designed for pole-mounted distribution transformers, allowing ground crew operation. It features weatherproof porcelain insulators for outdoor service above 1,000V, classifying it under tariff item 8535.30.00.

27kV Single-Phase Hookstick Knife Switch

The 27kV single-phase hookstick-operated knife switch is used for manual operation from ground level in utility substations. The hookstick design allows pole-top disengagement for safe circuit isolation above 1,000V, falling under tariff item 8535.30.00.

38kV Vertical-Break Center-Rotating Knife Switch

The 38kV vertical-break knife switch features a center-rotating blade mechanism for transmission line sectionalizing. It provides a high-visibility open position for voltages exceeding 1,000V in outdoor installations, classifying it under tariff item 8535.30.00.

4.16kV Pad-Mount Knife Switch

The 4.16kV pad-mounted knife switch is designed for underground residential distribution vaults. It features a tamper-resistant design with a visible blade position for voltages exceeding 1,000V, classifying it under tariff item 8535.30.00.

5kV Three-Phase Side-Break Knife Switch

The 5kV three-phase side-break knife switch is designed for indoor metal-clad switchgear applications. The side-mounted blade operation provides visible break confirmation for circuits exceeding 1,000V, classifying it under tariff item 8535.30.00.

7.2kV Double-Break Gang Knife Switch

The 7.2kV double-break gang-operated knife switch provides two interruption points per phase for enhanced safety. It is used in industrial substations for reliable isolation above 1,000V, classifying it under tariff item 8535.30.00.

ABB OT40F3 Isolating Switch

The ABB OT40F3 is a 3-pole isolating switch rated for 40A at voltages exceeding 1,000V, used in industrial electrical panels to safely disconnect circuits for maintenance. It falls under tariff item 8535.30.00 as an isolating switch for high-voltage circuits.