WTSP-A series surge protection deviceis suitable for TN-S, TN-C-S,
TT, IT etc, power supply system of AC 50/60Hz,<380V, installed on
the joint of LPZ1 or LPZ2 and LPZ3. It’s designed according to
IEC61643-1, GB18802.1, it adopts 35mm standard rail,there is a
failure release mounted on the module of surge protection device,
When the SPD fails in breakdown for over heat and over-current,
the failure release will help electric equipments separate from the
power supply system and give the indication signal, green means
normal, red means abnormal, it also could be replaced for the
module when has operating voltage.
