Weidmueller VPU AC I 4 R 300/12.5 LH

The VPU AC I 4 R 300/12.5 LH is a voltage protection unit for AC systems, likely offering four-phase protection, possibly including neutral. "R" suggests a reset function, "300" indicates the voltage capacity, and "12.5" refers to a key operational parameter like current rating. "LH" could point to low-harmonic or low-voltage protection. It provides protection against voltage surges or fluctuations in industrial and commercial equipment.