Fridge/Freezer Guard

This is a heavy-duty voltage protection device designed specifically for appliances with compressors, such as refrigerators, deep freezers, and water coolers.

Unlike standard surge protectors, this device is engineered to handle under-voltage (brownouts), which are the leading cause of motor failure in refrigeration units.

Technical Specifications

Current Rating: 13 Amps (suitable for almost all domestic and commercial fridges).

Operating Voltage: 220V – 240V AC.

Low Voltage Disconnect: Typically cuts power if the voltage drops below 180V to prevent the motor from stalling and burning out.

High Voltage Disconnect: Typically cuts power if the voltage exceeds 260V.

Response Time: Responds to spikes and fluctuations in less than 10 nanoseconds.

The "3-Minute Delay" Advantage

The most critical feature of this guard is the Startup Delay (usually 3 to 5 minutes).

Why it's there: When power is cut, the refrigerant gas in a compressor is at high pressure. If the power returns immediately, the motor may struggle to start against that pressure, leading to a "locked rotor" and permanent damage.

What it does: The guard forces the fridge to stay off for several minutes after power is restored, allowing the gas pressures to equalize so the motor can start safely.

LED Indicator Meanings

Wait (Amber/Red): Power has just returned or is unstable. The guard is "counting down" the 3-minute safety delay.

Safe/On (Green): Voltage is stable and power is being supplied to the fridge.

Off (Red): The incoming voltage is currently too high or too low for safe operation.