PRF1, PRD, PF surge arrester provide overvoltage protection for housing purpose (TV, refrigerators, computers, ...), telecommunication and industrial electronics (automation systems, motor control, …). The PRF1, PRD, PF surge arrester uses an MOV (metal oxide varistor) to eliminate atmospheric and industrial voltage surges. Type 1 surge arresters against direct lightning strokes according to standards IEC 61643-1 and EN 61643-11. Type 2 surge arresters against indirect lightning strokes according to standards IEC 61643-1 and EN 61643-1.