120 Volt; 20 AmpAdjustable Over/Under Voltage Manual Reset Interrupter2 socketsMANUAL RESET INTERRUPTERSPrecise Voltage shutdown trip-outShould Power Line Voltage be disrupted, or fall outside user selectable limits,these units will disconnect controlled apparatusFront panel MANUAL RESET switch restores PowerFront Panel Controls permit adjusting OVER/UNDER Interrupt levelsNote: All units have Industrial Duty 58,500 Surge Amp Suppressors including transient arresters & spike surge protectorsEffects accompanying Power LossWildly varying Line Voltage before StabilizingPower repeatedly cycles ON / OFFSevere interference occurs when Power RestoredLarge surges (to 2,500 Volts !!) when Power RestoredDamages that may accompany Power LossProlonged low voltage may overheat motorsON / OFF cycling may damage Power SuppliesLarge surges at Power restoration damages equipmentRelays often chatter, disrupting system operation