Weidmueller VPU AC I 3+1 440/25 LCF

The VPU AC I 3+1 440/25 LCF is a voltage protection unit for AC systems, providing three-phase plus neutral protection ("3+1"). "440" refers to the voltage capacity, and "25" represents the current rating or another operational parameter. "LCF" likely stands for low-frequency protection or load current filtering, which helps prevent issues related to voltage fluctuations and ensures a more stable electrical supply. This unit is designed to protect electrical equipment from voltage surges or fluctuations, commonly used in industrial and commercial applications to safeguard the integrity and reliability of electrical systems.