1,CE,TUV,UL Certification & Test Report 2,spd,Surge Protector,surge arrester 3,quick response; MODELVC20/385/3PVC20/275/3POrder No. ... Protection LevelC or D LEVELMax. Continuous AC voltage Uc385V275VMax. Continuous DC ... -PE)40KA(8/20μs)Limit voltage Up1.8KV spd (surge arrester,surge protective device)