Item No.: ADJUSTABLE V/A PROTECTOR

ADJUSTABLE V/A PROTECTOR

Description：

Overvoltage protector, professional level voltage abnormality protection, automatic disconnection and restoration of power supply, ensuring safe and stable operation of equipment.

This over and under voltage protector is designed to safeguard residential electrical circuits by automatically disconnecting power when voltage exceeds or drops below preset safe limits.

🔹 Key Technical Knowledge

Protection type: Over-voltage & under-voltage automatic cutoff
Monitoring mode: Real-time AC voltage detection
Installation: 35 mm DIN rail
Application focus: Household and light commercial circuits
Manufacturer role: Factory-direct voltage protector manufacturer

🔹 Why choose this product?

Prevents appliance damage caused by unstable grid voltage
Automatic reconnection after voltage normalization
Simple structure with high long-term stability

🔹 OEM & Manufacturing Advantage

As a professional over and under voltage protector factory, we support OEM branding, localized voltage settings, and bulk production for global distributors.

🔹 Use Cases / Industries

Residential main distribution boards
Small commercial buildings
Appliance protection systems

Front-face Panel

Technical Data

Supply terminals

N,L

Rated supply voltage

AC220V；DC85-300V

Rated frequency

40/50/60/70Hz

>V setting range

AC130-300V;DC130-300V

<V setting range

AC80-210V;DC85-210V

Voltage hysteresis

Overvoltage trip delay

0.5s

Voltageaccuracy

<1%

Max.operating phase voltage

350V

Max.operating current

40A/63A

Altitude

≤2000m

Function

Lightning protection

Pemissable relative humidity

<50% at 25℃
（without condensation)

Ambient temperature

·-25℃~+55℃

Size

81*36*66mm

Setup Menu

Setcharacter

Technicalparameter

Setrange

Defaultvalue

P-1

Startingdelaytime

1-600s

P-2

OvervoltageSetting

230-300V

270V

P-3

UndervoltageSetting

140-210V

170V

P-4

Voltagetriptime

1-30s

P-5

Recoverydelaytime

1-600s

30s

FAQ

1. What is the main function of this over and under voltage protector?
This device is designed to automatically disconnect power when voltage exceeds or drops below a safe range, protecting electrical equipment from unstable grid conditions.

2. How does it differ from a surge protection device (SPD)?
Unlike SPDs that handle transient spikes, this protector focuses on continuous abnormal voltage, such as long-term over-voltage or under-voltage situations.

3. Is automatic reconnection supported?
Yes. Once voltage returns to a normal range, the protector reconnects power automatically after a short delay.

4. What type of installation does it support?
It supports 35 mm DIN rail installation, suitable for standard distribution boards.

5. Who typically uses this product?
It is widely used by electrical wholesalers, panel builders, and OEM system integrators.

6. Is OEM manufacturing available?
Yes. As a professional factory manufacturer, we provide OEM branding, bulk supply, and customized parameters.