SPD type 2+3 surge protection devices with QuickSafe® technology, tested according to DIN EN 61643-11, are suitable for protecting low-voltage electrical systems and terminal devices against dangerous surges. The SPD meets the surge protection requirements of DIN VDE 0100-443 and 534. All surge protection devices are compatible with the System pro M compact series and can be connected to them via phase rails. All devices are equipped with a function display.