The DsenUS series surge protectors (SPDs) are used to protect against lightning or other transient overvoltage induced surges, releasing large surge currents on power lines to the ground and limiting overvoltage. Suitable for power protection in industrial, construction, civil aviation, finance, securities, telecommunications, ports and other systems, it suppresses the instantaneous overvoltage amplitude of lightning and operation overvoltage, releases surge energy, and protects the safety of system circuits and equipment.