Combination arrestor, protection set for TT, TN and IT system MOV, Pluggable,Modular design IEC61643-1 1pc/pkg ... Combination arrestor, protection set for TT, TN and IT system· DGM-type surge protector(hereinafter referred to as SPD ... 32AFloating monitoring YesFunction displayNormal : Green Failure: RedAdapt toTT,TN,IT systemMounting on35mm Din rail Combination arrestor, protection set for TT ...