surge protective devices are used for lightning and overvoltage protection
in AC50/60Hz, 230/400V. The product is with an internal nonserviceable separating
device. When the surge protective devices is overcurrent or overvoltage
and the puncture is nonsevice able, the nonserviceable separating device will automatically
separate from the protector from the electrical network. And simulaneously
the position display windw will turn red from green.
Class One Lightning Protection(Protection Class:B)Class B lightning current SPD protection is used for equal potential connection when
lightning. It is installed between LPZ0 A zone or LPZ0B zone and LPZ1 zone and
widely used for over-voltage protection in all kinds of Class 1 power supply
(Class B). The protector is usually installed in the incoming line of the main low
voltage power distributing cabinet or the main low voltage switch cabinet in
the building.

surge protective devices are used for lightning and overvoltage protection
in AC50/60Hz, 230/400V. The product is with an internal nonserviceable separating
device. When the surge protective devices is overcurrent or overvoltage
and the puncture is nonsevice able, the nonserviceable separating device will automatically
separate from the protector from the electrical network. And simulaneously
the position display windw will turn red from green.
Class One Lightning Protection(Protection Class:B)Class B lightning current SPD protection is used for equal potential connection when
lightning. It is installed between LPZ0 A zone or LPZ0B zone and LPZ1 zone and
widely used for over-voltage protection in all kinds of Class 1 power supply
(Class B). The protector is usually installed in the incoming line of the main low
voltage power distributing cabinet or the main low voltage switch cabinet in
the building.