The metal zinc oxide trap is a high-tech product from the 1990s internationally. It uses zinc oxide resistors with excellent nonlinear volt ampere characteristics, which greatly improves the protection characteristics of lightning arresters under steep slopes, lightning waves, and operating waves compared to traditional silicon carbide lightning arresters. Especially zinc oxide resistors have good steep slope response characteristics, no delay in steep slope voltage, low residual voltage during operation, and no discharge dispersion. Thus, it overcomes the inherent disadvantages of high slope discharge voltage caused by steep slope discharge delay and high operation wave discharge voltage due to large dispersion of operation wave discharge in silicon carbide lightning arresters, greatly improving the protection margin under steep slopes and operation waves. Moreover, in terms of insulation coordination, it can achieve similar protection margins for steep slopes, lightning waves, and operation waves, providing optimal protection for power equipment and improving the reliability of protection. Zinc oxide lightning arrester has the ability to absorb lightning overvoltage, operational overvoltage, and power frequency transient overvoltage simultaneously. The composite jacket metal zinc oxide lightning arrester is a high-tech product from the 1990s internationally. It is molded with integral silicone rubber, which has good sealing performance and excellent explosion-proof performance. Pollution is free from cleaning, and can reduce the occurrence of wet flashes in foggy days. It is resistant to electrical corrosion and aging, small in size and light in weight, and collision resistant, which is convenient for installation and maintenance. It is an upgraded product of porcelain bushing lightning arrester.