The surge protection device belongs to T1+T2 AC power surge protector, which is installed between the power supply network and the equipment to drain, suppress and reduce the overcurrent and overvoltage caused by induced lightning strikes or the power grid system, so as to reduce the harm to the electrical equipment.

The product is equipped with built-in thermal release device and fuse, fuse can be replaced.

It is mainly used for lightning protection of rail transit power system.