Surge suppressor used for DC power. Working voltage: 12VDC, 24VDC, 48VDC Nominal discharge current: 5KA DC power surge suppressor 1. Description: LYD-VD DC power supply surge suppressor is used in forpart devices of different voltage power supply such as computer system, modem, signal control etc. and it can protect the lightning shock on DC power supply cable or over voltage caused by ...