About Us

Lightning Surge Protection requires certain measures


We design customized components, devices and system for various technical demands and environments. We have manufactured MOVs, the main components and auxiliary devices installed in and out of our products.


We provide main component, devices and systems separately or all together.

Core Product
- MOVs
* Ultra compact single disk for direct lightning surge current
* limp 6.5kA, 12.5kA, 25KA, 50kA
* MOV(metal varistor oxide design) disk design
* MOV specification / shape / size design required for each SPD
- SPDs (surge protective devices)
* Module type : TPMOV (Thermally protective MOV)
* Power Line, Communication / Signal Line
* Pluggable Din-rail type, Wall-mounted Steel-Box type
* Optional : Surge Counter, SPD Disconnector, indicator, communication
- Smart Lightning Protection Monitoring System
* Coordinated SPDs, alarm communications, monitoring programs, and Intelligent self-diagnosis surge protection system
* It diagnoses all lightning protection devices such as lightning rod, SPDs, grounding, and surge counter, and informs replacement time.
* ILPMS (intelligent lightning protection management system)
* Lightning Alarm System, Lightning / Surge Counter System

Thermal Protective MOVs: Main Components of SPDs

SPDs contain at least one non-linear component (a varistor or spark gap). Their function is to divert the discharge or impulse current and limit the overvoltage to the downstream equipment.

We succeeded in developing high capacity varistor production technology of 50kA (kiloamperes). It is twice the current device (25kA) at 50kA, the maximum current capacity of a conventional single-element high-capacity (limp) varistor. It is the single-element varistor with the highest energy capacity in the world and is expected to gain competitiveness in the market. It has a current density about twice that of the existing leading company's high-capacity varistor, and it has about 16 times the energy capacity compared with a common varistor of the same area. This technology can be applied to major facilities in major countries where protection against high-output electromagnetic pulses (HPEMP) and direct lightning protection is required. It can be applied to HPEMP protection device and 1st class surge protector (SPD) for direct lightning

images of SPDs