Power systems


With the increase in limit values in standards, the newly introduced IEC/EN 61643-11 and the forthcoming EN 61643-11 (new in 2013) place great emphasis on the need for all-round, reliable, lightning and surge protection.


Our answer to these new requirements is the new VPU lightning and surge prtection series. Based on combined varistor-gas discharge tube technology, this highly advanced product series already fulfils the impending international standards, and therefore is already in a position to provide your facilities with the greatest degree of protection.

Not only will you be protecting your plant, but also your planning processes. Conformity with standards for at least 5 years means that you can minimise your planning iteration steps and the redesigns associated with these.


Our products have intelligent features to help installers during installation and also for maintenance specialists when servicing the lightning and surge protection systems.

Indeed, our VPU Series provides a long-lasting, safe and forward-looking lightning and surge protection solution for your plant. See for yourself.

Weidmüller VPU I (Type I), VPU II (Type II) and VPU III (Type III) surge protection products effectively reduce the interference coupling that can occur from transient surge voltages, even significantly below the limits prescribed by insulation co-ordination according to EN 60664-3 / DIN VDE 0110-3. This means that the entire system is exposed to less malfunction.


The co-ordination of the arresters is achieved by technical means. This means that decoupling between types I, II and III is not necessary. The arresters are tested according to product standard IEC 61643-11:2012 / DIN EN 61643-11:2012 and can be installed in systems according to IEC 61643-12 / VDE V0675-6-12 and IEC 62305-4 / VDE 0185-4. This lightning and surge protection device is suited for installation in power supply systems. Weidmüller offers different products for different mains types and voltage levels. Even for photovoltaic applications, there is a special protection according to EN 50539-11/ VDE 0675-39-11: 2010 available.


Lightning and surge protection VPU I


Surge protection VPU II


Terminal device surge protection VPU III