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RP-Onesto Lightning Arrester (Surge Arrester) SPD 3P+Ν TYPE 1+2 50kA 275VAC with operation indicator

RP-Onesto Lightning Arrester (Surge Arrester) SPD 3P+Ν TYPE 1+2 50kA 275VAC with operation indicator The surge arrester consists of a semi-conductor valve element that opens at certain conditions. At normal conditions of the system, the surge arreste..