Introduction Of Surge Protection Device

Scope of application: This product is used in conjunction with a surge protector and is connected in series to the front-end line of the surge protector as a backup protection switch for the surge protector. When the surge protector fails, the surge protector is disconnected from the power grid to prevent the surge protector failure from causing a power supply system failure. Performance characteristics: ① It can withstand the limp or lmax corresponding to the SPD without disconnection, assisting the normal operation of the surge protector. ② It can cut off high short-circuit currents with an amplitude of up to 100KA to protect the SPD from TOV damage. ③ It can cut off low short-circuit currents of more than 3A in a very short time to prevent the SPD from catching fire. ④ The residual pressure is low, and the corresponding SPD overall protection level Up is lower, so the equipment can be better protected.