Weidmuller VPU series lightning and surge protection

Weidmuller’s lightning and surge protection VPU range meets the current IEC 61643-11 and EN 61643-11 standards. Included are models for Category C3 to A for energy networks with about 200 variants available to ensure optimal choice for users.

The range also includes products for photovoltaic facilities and wind power installations. They are suitable for use in building facilities, machine construction, process technologies and renewable energies.

Providing flexibility and convenience, each VPU module is easily and quickly pluggable. A mounting rail clip enables simple and fast assembly and removal, without the need for tools. The devices can also be rotated 180° in the electrical/control cabinet to ensure the highest degree of flexibility during installation and without impacting on overall visibility.

Moreover, each VPU module locks firmly into position on the base of a mounting rail. The lock ensures the unit can withstand vibration and claims to meet the exacting requirements on vibration resistance set by wind turbine manufacturers.

The units also feature a large, central status display window. Users can see at a glance the status of the protective function. If the flag in the status window changes from green to red it is no longer providing protection and the device can be replaced quickly because of the plug-in connectors and without the need to disconnect any wiring.

An alarm function that notifies users via a mechanical relay is available on all models. All the modules are self-monitoring. Once the life of the module has been extinguished, the relay function informs the user that it needs replacing.

The units also feature a Y-type wiring connection that provides a separate in/out connection to 120 A using 100 kA models with a 50 mm² stranded wire cable entry. This helps reduce the let through voltage by eliminating additional wiring for simple electrical structures with <125 A main fusing.