| we can supply TKU2 Surge Protection DeviceTKU2 surge protection device SPD, with two thunderbolt protection chips, one normal chip and a spare chip in the module. When the normal chip comes across thunder stroke or aging deterioration, the spare chip will be put into service autom-atically, and meanwhile, send signal for alarm. Max.continuous working voltage(Uc): 275V/320V/385V/420V--50Hz/60HzMax.dischargecurrent(8/20)(max): 8KA 15KA 40KA 65KAVoltage protection level(Up): 1.0KV/1.2KV/1.5KV/1.8KV/2.0KV | 
