Weidmueller VPU I 0 400V/25KA

The VPU I 0 400V/25KA is a voltage protection unit for AC systems. "I" likely refers to a specific protection class or type. "0" may indicate protection for a single circuit or a specialized configuration, potentially without a neutral connection. "400V" represents the voltage rating, and "25KA" indicates the surge current rating, meaning the unit can withstand up to 25 kA of surge current. This unit is designed to protect electrical equipment from voltage surges, offering reliable protection in systems where higher surge current handling is required, typically used in industrial or commercial applications.