This series of surge protectors is suitable for AC 50/60Hz, 380V and below TT, IT, TN-S, TN-C-S power supply systems. They can serve as equipotential bonding at the interface of LPZ1, LP22, and LP23 zones. The design complies with IEC61643-1, GB18802.1 standards. They can be mounted on 35mm electrical mounting tracks. This product features an integrated failure disconnection device. In the event of failure due to overcurrent, overheating, or breakdown, the failure disconnection device automatically disconnects the surge protector from the power grid. Simultaneously, the visible alarm indicator module changes from green (normal) to red (fault).