Mercury Arc Rectifier Tube from Canada
Gas-filled tube using mercury vapor arc for high-voltage DC power conversion in industrial applications. HTS 8540.89.00.80 includes mercury arc rectifying tubes as specified in heading description.
Duty Rate — Canada → United States
13.7%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Hazardous material declaration mandatory due to mercury content; follow EPA/DOT regulations
• Prove vapor construction vs solid-state rectifiers (8541.10) with cutaway diagrams