LOW VOLTAGE SURGE ARRESTER WITHOUT AUXILIARY CONTACT CHINT NXU-II G 2P 40kA/275V Max continuous operational voltage Uc: 275V; Frequency: 50/60Hz; Surge Arrester Chint NXU-II 2 Poles Nominal Discharge Current: 40 kA Conform to IEC/EN 61643-1 Application: SPD II - Draw out Main Distribution Panel 40 kA Protect electric system and on - loading electrical apparatus from lightning and instantaneous over-voltage