Weidmueller VPU AC FB 16-3

The VPU AC FB 16-3 is a surge protection device designed for alternating current (AC) systems. The "FB" likely refers to a specific feature or design, such as a "fuse block" or "finger-safe" feature, providing additional safety or ease of installation. The "16-3" could indicate its voltage rating or specific configuration, potentially meaning it is suitable for systems with a 16A current capacity. This device protects sensitive equipment from transient overvoltages caused by lightning or electrical surges, ensuring system stability and preventing damage.