Weidmueller VPU AC I 3+1 300/12.5

The VPU AC I 3+1 300/12.5 is a voltage protection unit designed for AC systems. The "3+1" likely indicates a configuration with three primary protection stages and an additional backup or redundancy stage for extra security. "300" refers to the voltage or power capacity, while "12.5" could represent the current rating or another key operational parameter. This unit is used to protect electrical equipment from voltage surges or fluctuations, commonly in industrial settings.