Ignitron Mercury Arc Rectifier Tube from Germany
Ignitrons are large mercury arc rectifier tubes used for high-current DC power conversion in industrial applications like aluminum smelting. HTS 8540.89.00 includes these mercury vapor-filled tubes operating via cathode-initiated arc discharge.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Mercury content declarations mandatory; special hazardous waste handling procedures
• Ozone-depleting substances certification required for mercury vapor tubes
• Legacy equipment replacement; verify if solid-state rectifiers under 8536 more appropriate