SPD type 2 surge protective devices with QuickSafe thermal monitoring are designed to protect against indirect lightning strikes and switching surges. They are installed as close as possible to the supply point of the electrical system. All OVR T2 consist of a base part and a replaceable protection module. They are equipped with a mechanical function indicator and the TS variants with a potential-free changeover contact. They are compatible with the System pro M compact series and can be connected to these via busbars. Mainly used in sub-distribution boards and final circuits. Type: OVR T2 3N 40-275 P QS, type T2 surge arrester.