Weidmueller VPU I 1+1 R LCF 280V/12,5KA

The VPU I 1+1 R LCF 280V/12.5KA is a voltage protection unit for AC systems. "I" likely refers to a specific protection class or type. "1+1" indicates protection for one phase plus neutral or a similar configuration. "R" denotes a reset function. "LCF" might refer to a specific feature such as "Low Current Failure" or another protective function. "280V" represents the voltage rating, and "12.5KA" signifies the surge current rating, meaning the unit can handle up to 12.5 kA of surge current. This unit is designed to protect electrical equipment from voltage surges and fluctuations in single-phase systems with neutral, commonly used in industrial or commercial applications that require high surge current protection and additional features like the LCF function.