POWER SUPPLY, PHASES:3, PN(KW):0.72, UPRI(V):400+/-20, USEC(V DC):24, ISEC(A DC):30/36 (60/40 CEL), F(HZ):50...60, SWITCHING SIZE/SHIELDING:YD1 /0, PROTECTION CLASS:I, TA/ISOCL:60 /B, W(%):4.2, IP00, CONNECTION:SCREW CONNECTION, MOUNTING:SCREW, EN 61558-2-6, EN61131-2 >SAFETY TRANSFORMER< The 4AV power supplies supply an unregulated direct voltage of 24 V DC based on single-phase or three-phase safety transformers with downstream rectifiers and capacitor filtering in accordance with EN61131-2.