AUSP Surge Protectors used in the filed of power distribution system, single neon ... and Feature:Have a good discharge capacity,it's suitable for single phase,TN-C,TN-C-S,IT and TT ... display on the protector and remote signal terminal1)Visual display for operation2)Signal terminal effecting the remote function3)Convenient to pulled ... signal terminal)Standards: IEC/EN 61643-1 AUSP Modular surge protectors