Soltree CZVA1 adjustable digital voltage protector socket EU plug front view with LED display1 / 7

Over Voltage Protector

Adjustable Digital Voltage Protector Socket EU/UK/South Africa Plug Over/Under Voltage Protection

Unstable grid voltage is one of the most common — and least visible — causes of premature appliance failure. When voltage spikes or sags occur, refrigerator compressors, air conditioner units, and televisions absorb the damage silently until they fail. The Soltree CZVA1 voltage protector socket sits between the wall outlet and your appliance, cutting power the instant voltage moves outside your set range and restoring it automatically once the grid stabilizes. No wiring, no electrician — just plug in, set your thresholds, and your appliance is protected.

The built-in digital LED display shows the live voltage reading at all times, so you always know what your grid is delivering. Over-voltage and under-voltage thresholds are independently adjustable: set over-voltage anywhere from 230V to 300V (factory default 260V) and under-voltage from 140V to 210V (factory default 175V). A ±20V voltage correction function lets you fine-tune the displayed reading against a calibrated reference. Recovery delay is configurable from 5 to 999 seconds — set a longer delay to protect compressor-based appliances like refrigerators and air conditioners from rapid cycling after a voltage event.

Available in EU Schuko, UK, and South Africa plug formats to cover export markets and international installations. Rated for up to 2300W (10A), suitable for most household appliances including refrigerators, air conditioners, washing machines, and televisions. Operating temperature range -10℃ to +50℃.

Key Features

  • Plug-and-play — no installation or wiring required, plugs directly into wall socket
  • Digital LED display — shows live voltage reading at all times
  • Adjustable over-voltage protection — 230V–300V, default 260V
  • Adjustable under-voltage protection — 140V–210V, default 175V
  • Configurable recovery delay — 5s–999s, prevents rapid cycling for compressor appliances
  • Voltage correction function — ±20V offset for calibration against reference meter
  • Automatic power cutoff on fault — instant trip on over or under voltage
  • Automatic power restore — resumes after set delay once voltage stabilizes
  • Available in EU (Schuko), UK, and South Africa plug standards
  • Max load 2300W / 10A — suitable for refrigerators, air conditioners, TVs

Samples available · OEM pricing on request · Ships worldwide

Technical Specifications

Product NameAdjustable Digital Voltage Protector Socket
Compatible Plug StandardsEU (Schuko) / UK / South Africa
Rated Input VoltageAC 140–300V
Rated Frequency50Hz / 60Hz
Max Rated Power2300W
Max Rated Current10(2)A / 16A Max
Over-Voltage Protection Range230V–300V (Default: 260V)
Over-Voltage Recovery Offset-5V (Default: 255V)
Under-Voltage Protection Range140V–210V (Default: 175V)
Under-Voltage Recovery Offset+5V (Default: 180V)
Recovery Delay Time5s–999s (Default: 10s)
Voltage Correction Range-20V ~ +20V (Default: 0V)
Display TypeDigital LED Display
Control ButtonsPower / SET / Up / Down
Automatic Power CutoffYes (On Over/Under Voltage)
Automatic Power RestoreYes (After Set Delay)
Plug & Play InstallationYes
ApplicationHome Appliances, Refrigerators, Air Conditioners, Televisions, Washing Machines
Operating Temperature-10℃ ~ +50℃

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