Weidmueller VPU AC II US 0 400/50

The VPU AC II US 0 400/50 is a voltage protection unit for AC systems. "II" indicates Class II surge protection, and "US" suggests that it is designed for use in the United States or complies with U.S. standards. "0" likely represents protection for a single circuit or a specific configuration. "400" denotes the voltage rating, and "50" signifies the current rating. This unit is intended to protect electrical equipment from voltage surges and fluctuations, making it suitable for various industrial and commercial applications where reliable surge protection is necessary.