1、Surge Protection: When surge over voltage occurs in the system due to lightning stroke or other reasons, the protector will be quickly opened within nanoseconds, and the surge over voltage will be introduced to the ground to protecting the electrical equipment. 2、Reliable Working: With insulated terminals, the surge arrester ensures quick response and good bearing capacity for surge protection. 3、Clear in Display: Working status indication window, green indicates normal, red indicates fault, clearly showing the working status. 4、Premium Material: Adopting premium PC material that is flame retardant and very sturdy with corrosion, also very durable for long use. 5、Easy to Install: Comes with light weight and compact size as well, the 35mm electrical guide rail installation is simple to complete.