Weidmueller VPU AC II 4 350/50

The VPU AC II 1 300/50 is a voltage protection unit designed for AC systems. "II" indicates two-phase protection, covering two phases of the electrical system. "1" likely refers to a specific configuration or protection mode. "300" represents the voltage capacity, and "50" refers to the current rating or another operational parameter. This unit is designed to protect electrical equipment from voltage surges, fluctuations, and faults, ensuring the stability and safety of electrical systems. It is commonly used in industrial or commercial settings where reliable surge protection is critical for the protection of sensitive equipment.