1,CE,TUV,UL Certification & Test Report 2,Voltage Surge Protector,spd,Surge Protection 3,quick response; 4,In=40KA Imax=80KA MODELVB40/385/ ... . discharge current Imax (N-PE)80KA(8/20μs)Limit voltage Up2.3KV1.8KV surge protector(surge protection device,spd)