Weidmueller VPU AC II US 1 R 240/50 Y

The VPU AC II US 1 R 240/50 Y is a voltage protection unit designed for AC systems. "II+III" indicates combined Class II and Class III surge protection, offering a high level of protection against surges and transient voltage. "4" refers to protection for four circuits or phases. "R" denotes a reset function. "440" signifies the voltage rating, and "20" represents the current rating. "S" may indicate a specific feature, such as monitoring or a particular protective configuration. This unit is designed for industrial and commercial applications where robust surge protection is required for multiple phases.