Mercury Relay Circuit Boards
Telecom equipment PCBs with mercury-wetted reed relays for signal switching. HTS 8549.31.00.00 applies to electronic assemblies containing mercury-switches. Legacy systems replaced by solid-state alternatives.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for functional mercury reed relays imported separately
Operational relays classify under relay headings, not waste assemblies
If boards contain only integrated circuits without discrete mercury switches
Memory-integrated circuits without hazardous discrete components use 8542
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Import Tips & Compliance
• Identify and quantify mercury relays per board; use secondary containment packaging; partner with certified mercury reclaimers
Related Products under HTS 8549.31.00.00
Lead-Acid Battery Scrap from UPS Systems
Scrap consisting of used lead-acid electric accumulators recovered from uninterruptible power supply units, containing lead plates and electrolyte. Classified under HTS 8549.31.00.00 due to the presence of lead-acid accumulators, explicitly listed in the subheading for electrical and electronic waste. These are non-functional units destined for recycling.
CRT Monitor E-Waste with Activated Glass
Discarded cathode-ray tube computer monitors containing phosphor-coated activated glass from the picture tube. Falls under HTS 8549.31.00.00 because of the 'glass from cathode-ray tubes or other activated glass' explicitly mentioned. These are complete end-of-life electronic assemblies for recycling.
Mercury-Containing Thermostat Switch Scrap
Electronic assemblies from old heating systems with embedded mercury-tilt switches for temperature control. Covered by HTS 8549.31.00.00 due to 'mercury-switches' in the legal description for hazardous electronic waste. These are non-functional units collected for mercury reclamation.
Cadmium-Contaminated PCB Assemblies
Printed circuit boards from industrial electronics with cadmium-plated connectors and components. HTS 8549.31.00.00 applies due to 'electrical or electronic components containing cadmium' in hazardous e-waste assemblies. These boards are obsolete and suitable only for metal recovery.
NiCad Rechargeable Battery Scrap
Scrap nickel-cadmium electric accumulators from cordless power tools, containing cadmium electrodes. Classified under HTS 8549.31.00.00 for electronic waste with cadmium-containing accumulators. Fully discharged and non-rechargeable units for hazardous recycling.
PCB-Contaminated Transformer Assemblies
End-of-life electrical transformers from industrial equipment leaking polychlorinated biphenyls (PCBs) in dielectric fluid. HTS 8549.31.00.00 covers 'electrical or electronic components containing PCBs' in waste assemblies. Units exceed 50 ppm PCB threshold for hazardous classification.