Weidmueller VPU AC FB 16-4

The VPU AC FB 16-4 is a surge protection device for alternating current (AC) systems. The "FB" likely refers to a fuse block or specific safety feature, ensuring secure installation. The "16-4" may indicate a 16A current rating and a particular system configuration. This device protects electrical installations from transient overvoltages caused by lightning or electrical surges, ensuring the reliability and longevity of connected equipment in industrial and commercial applications.