A/C Guard Single phase Voltage Surges Protector Automatic protection against: Low, High voltage, ... voltage, spikes and surgesIntelligent time delay, protection against power back surgesCircuit breaker, protection against short circuit and ... functions protect against Low voltage, high voltage, power-back surges, power fluctuations and surges/ spikes. It features a ... delay. A/C Guard AVS Voltage Protector