Weidmueller VPU AC I 1 300/12.5 LH

The VPU AC I 1 300/12.5 LH is a voltage protection unit designed for AC systems. The "1" likely indicates a single protection stage, while "LH" could refer to a specific variant or feature, such as low-harmonic or low-voltage protection, depending on the product. "300" refers to the voltage or power capacity, and "12.5" may denote the current rating or another operational specification. This unit is used to protect electrical equipment from voltage surges or fluctuations in industrial or commercial environments.