Siemens 6EP4437-7EB00-3CX0 SITOP PSU8200, Stabilized Power Supply, Input: 400–500 V AC 3-phase, Output: 24 V DC / 20 A, Wide-range input, High efficiency, Compact design, Suitable for demanding industrial applications, Reliable protection against overload, short-circuit and overvoltage, with signaling contacts for remote monitoring.