Weidmueller VPU AC I 3+1 R 300/12.5 LH

The VPU AC I 3+1 R 300/12.5 LH is a voltage protection unit for AC systems, likely providing three-phase plus neutral protection. "R" may indicate a reset function, "300" refers to voltage capacity, and "12.5" denotes a key operational parameter like current rating. "LH" could suggest low-harmonic or low-voltage protection. It safeguards industrial and commercial equipment from surges or fluctuations.