Powermax Avs 30 (Automatic Voltage Switcher).

Voltage Protection: Safeguards equipment against over-voltage, under-voltage (low power), power-back surges, and spikes/surges. Automatic Operation: Automatically disconnects power during unsafe voltage conditions and reconnects it after a time delay once the mains supply returns to normal levels. Adjustable Delay: Features a user-adjustable start-up delay (typically between 10 seconds and 10 minutes) to ensure stability and protect against power-back surges. Current Rating: Designed for a maximum current of 30 Amps and can accommodate an inrush/start-up current of up to 110 Amps.