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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the part qualifies under additional U.S. note 11 to chapter 85
Certain specified electrical apparatus parts receive special tariff treatment under 8538.90.10
If for control panels containing similar electronic modules
If principally used in 8537 control boards rather than standalone breakers, classification shifts to heading 8537
If industrial assembly with data processing circuitry
Trip units with significant microprocessor functionality for data logging may be considered parts of ADP machines
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Obtain OEM compatibility certification from Siemens to substantiate classification under circuit breaker parts
• Declare exact model compatibility (e.g
• for 3VA/3VL breakers) on commercial invoice to prevent CBP scrutiny
• Watch for counterfeit risks; include holograms or serial verification in shipment docs
Related Products under HTS 8538.90.81.20
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.