Sankosha manufactures gas discharge tube surge arresters for circuit protection from lightning and other over voltage events. Sankosha also produces the original conductive concrete ground bed, SAN EARTH grounding cement
Keywords: three electrode gas discharge tube, arrester, GDT, sparkover, gas tube, 3P-4L1, fail safe mechanism, 3J Series, 3H Series, 3P Series, Sankosha, UL