Jef Techno Solutions Pvt. Ltd manufactures Surge Protection Device for Critical Application. Jef Techno Solutions Pvt. Ltd also supplies products like lightning & surge protection solutions, electrical grounding solutions, thermo electric coolers / heaters, solar power generation etc.Surge Protection Device for Critical Application is a device that protects sensitive equipments from damage by lightning and switching surges. The Surge Protection Device for Critical Application reduces the malfunctioning of the equipment and increases the reliability of the automation system. The Surge Protection Device for Critical Application are available in two modes. Viz. All mode and regular mode.