CURRENT SUPPLY (UNSCREENED); PHASES:3; PN(KW):0,75; UPRI(V):400+/-5%; USEC(V DC):30-27-24; ISEC(A DC):25; F(HZ):50...60; VECTOR GR./SHIELD WNG.:YNY6 /1; PROTECTION CL.:1; TA/ISOKL:50 /B; W(%):5; IP00; TYPE OF TERMINALS:SCREW/TAB CONNECTION; INSTALLATION:SCREW; EN 61558 >SAFETY ISOLATING TRANSFORMER The 4AV power supplies deliver a non-stabilized DC voltage of 24 V DC based on single-phase or three-phase safety transformers with downstream rectifiers and capacitor filtering according to EN61131-2.