5
2. Description
Figure 2. TFortis SG-Switch lightning protection device, appearance
TFortis PSW have standard built-in lightning protection of 230 VAC power
supply circuits and Ethernet (class 2 according to GOST R 51317.4.5,
performance criterion B). Since July 2017, all TFortis PSW switches are
manufactured with improved lightning protection (class 4 according to
GOST R 51317.4.5). TFortis SG-Switch increases the level of lightning
protection from class 4 to class 5 (GOST R 51317.4.5)
Note
"Performance criteria B" means temporary disruption of performance or
functioning with further recovery without operator's intervention
