Surge Arresters with Life Indicator is mainly designed for direct lightning currents with 10/350 wave form. These Surge Arresters provide protection to devices that are used for power supplies, measurement and control technology, data networks and standard interface as well as for transceiver systems. These Surge Arresters are equipped with life indicator to facilitate ease of operation. Surge Arresters with Life Indicator use encapsulated air-filled spark gap or air spark gap with electronic arcing to offer optimum performance for longer period of time.