DS98 AC surge protector is used for the 'secondary' protection of the single-phase networks against the surge voltages creating by lightning. DS98 is equipped with an internal thermal safety which will disconnet the unit from the AC network in case of end of life. This disconnection will be indicate by the turn on of the red led in the front. Very compact, the DS98 surge protector must be installed close by the equipment to protect, downstream a 'primary' surge protector. DS98 provides both a common and differential mode protection.