Of automatic circuit breakers
Parts suitable for use solely or principally with the apparatus of heading 8535, 8536 or 8537: > Other: > Other: > Other > Of automatic circuit breakers
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 8538.90.81.20
Siemens ETU Electronic Trip Unit
Siemens ETU (Electronic Trip Unit) for Sentron power circuit breakers provides digital protection with LCD display for monitoring breaker status. Classified under HTS 8538.90.81.20 as it is principally designed for automatic circuit breakers of heading 8536. Features include ground fault protection and communication capabilities for industrial applications.
Square D Masterpact Micrologic 5.0 A Trip System
Square D Micrologic 5.0 A trip system for Masterpact NW circuit breakers features energy metering and waveform capture. Classified under HTS 8538.90.81.20 for exclusive use with 8536 automatic circuit breakers. Supports Modbus communication for SCADA integration.
GE Power Break II Digitrip 3100+ Module
GE Digitrip 3100+ module for Power Break II low-voltage breakers offers arcflash reduction and maintenance alerts. HTS 8538.90.81.20 applies as part principally for automatic circuit breakers. Features self-testing diagnostics and event recording.
Mitsubishi ABB Viguard VH Trip Device
Mitsubishi/ABB Viguard VH electronic trip device for LV508 breakers features adjustable pickup settings. HTS 8538.90.81.20 classification for parts of heading 8536 automatic circuit breakers. Compact design for OEM panelboard integration.
Terasaki TemZone-TZ Digital Trip Relay
Terasaki TemZone-TZ for air circuit breakers offers harmonic restraint and maintenance counters. Specifically designed for heading 8536 breakers, qualifying for HTS 8538.90.81.20. Marine-grade construction for shipboard applications.
LS Electric Susol TRIU Trip Unit
LS Electric Susol TRIU microprocessor trip unit for MCCB provides neutral and ground fault protection. HTS 8538.90.81.20 as part principally for Korean-made automatic circuit breakers. Features LED status indication.
Schneider Electric Micrologic Trip Unit
The Micrologic trip unit is an electronic module for Schneider Electric Masterpact circuit breakers that provides adjustable protection settings for overcurrent and short circuits. It falls under HTS 8538.90.81.20 as a specialized part designed solely for use with automatic circuit breakers in heading 8536. This component integrates microprocessor-based monitoring and tripping functions essential for modern breaker operation.
ABB PR223DS Micrologic Protection Relay
The ABB PR223DS is a microprocessor-based protection relay module for Tmax circuit breakers, offering thermal-magnetic and neutral protection settings. It qualifies for HTS 8538.90.81.20 as a part solely for automatic circuit breakers per heading 8536. Includes front-mounted test buttons and double IOS terminals for easy installation.
Eaton Digitrip RMS510 Trip Unit
Eaton Digitrip RMS510 is an advanced digital trip system for Power Breaker series with zone-selective interlocking capability. Falls under HTS 8538.90.81.20 as dedicated part for automatic circuit breakers of 8536. Provides true RMS sensing and front-accessible adjustments.
Cutler-Hammer Digitrip RMS 760 Trip Unit
Cutler-Hammer (Eaton) Digitrip RMS 760 for F-frame breakers provides selective coordination and wave shape recognition. Under HTS 8538.90.81.20 as dedicated automatic circuit breaker component. Includes dual microprocessor design for reliability.