Siemens 9EP3323 Metal Oxide Surge Arrester from Mexico
This metal oxide varistor (MOV) based surge arrester is designed for high-voltage overhead power transmission lines exceeding 1,000V. It protects transformers and switchgear from lightning-induced overvoltages by clamping surge voltages. Classified under 8535.40.00.00 as it functions specifically as a lightning arrester for high-voltage applications.
Duty Rate — Mexico → United States
12.7%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Verify arrester voltage rating exceeds 1,000V with test certificates to confirm HTS 8535.40 classification
• Include manufacturer specs showing MOV technology and energy absorption capacity (kJ/kV)
• Avoid misclassification as low-voltage suppressors; provide proof of high-voltage design to prevent reclassification