Which overvoltage category and voltage endurance do the Sunny Boys and Sunny Mini Centrals fulfill?

The Sunny Boys and Sunny Mini Centrals fulfill on the AC side the overvoltage category 3, which relates to a voltage endurance of protection class III (4 kV voltage pulse).

On the input side (DC) the devices have a device surge protection with varistors.

Both measures, however, do not fulfill a comprehensive overvoltage and lightning protection. For systems in which these are required or desired, this must be effected through the use of external components.

Since generally these requirements are a matter of complex issues, SMA advises interested customers, installers and system planners within the scope of the free-of-charge Family II Seminars. In this, experts from leading companies from the area of lightning and overvoltage protection give lectures and answer individual questions on applicable and useable standards, installable components and individual designs of the external protective circuit.