Technical Data

Number of phases: 3
Nominal current: 220/230 VAC
Nominal voltage: 220V AC
Nominal current size: 63A
Maximum load power: 63A adjustable
Protection degree: CCC, CE certificates
Switching time: <30 ms
LCD screen: Yes
Overvoltage protection range: 240V–300V adjustable
Undervoltage protection range: 140V–200V adjustable
Delay time for activation: 1s–300s adjustable
Supply terminals: N, L1, L2, L3
Rated supply voltage: 220V AC
Rated frequency: 50/60Hz
Umax setting range: 230-300V
Umin setting range: 140-210V
Automatic delay time (Ton): 1-600s
Delay time for returning to priority phase: 1-600s
Delay time for switching to backup phase: <0.2s
Voltage hysteresis: 5V
Overvoltage disconnect delay time: 0.1s; ≥350V: 0.02s
Undervoltage disconnect delay time: 0.1s; ≥350V: 0.02s
Voltage accuracy: <1%
Maximum phase voltage operating level: 350V
Rated operational current: 63A
Maximum operational current: 80A
Pollution degree: 3
Ambient temperature: -25℃~+50°C

Usage

Voltage Stabilization: The switch is designed to protect equipment from both overvoltage and undervoltage, helping to prevent potential failures or damage due to unfavorable voltage conditions.
Industrial and Commercial Systems: Used in industrial equipment, commercial zones, and production lines where voltage fluctuations may pose a risk to equipment.
Power Supply Protection: Used as part of the power supply system to ensure reliable and safe electricity supply, automatically switching phases if the voltage drops or exceeds safe limits.
Residential Buildings: A great solution for residents who want to ensure the protection and stability of their electrical devices, especially in homes where frequent voltage fluctuations are observed.
Advantages

Voltage Protection: This device provides reliable protection against both overvoltage and undervoltage, preventing potential equipment failures and operational disruptions.
Fast Switching Time: A switching time of less than 30 ms ensures that the voltage is adjusted quickly, protecting the equipment from possible hazards.
Adjustable Protection Values: The ability to adjust overvoltage and undervoltage protection values allows the device to be tailored to specific needs and operating conditions.
LCD Screen: The LCD screen enables monitoring of voltage parameters and system status, allowing the user to easily track the system's condition and identify any deviations.
High Reliability and Certifications: The product holds CCC and CE certifications, ensuring it meets the highest quality and safety standards.
Disadvantages

Not Recommended for Outdoor Conditions: The protection degree of IP20 indicates that the device is not suitable for use in damp or open outdoor conditions, and should only be installed indoors or in a protected environment.
Relatively High Power: Although the 63A nominal current is suitable for most industrial equipment, smaller systems may find this device excessive as it may be overpowered for lower loads.
High Cost: Given the functionality and complexity of the device, the price may be higher than simple switching devices or basic voltage protection units.
The voltage control protection relay is a high-quality and efficient solution for industrial and commercial environments where equipment protection from voltage fluctuations is required. The adjustable overvoltage and undervoltage protection, fast switching time, and LCD screen allow for easy monitoring of the device’s status and provide additional safety. While the device is a great choice for high-load systems, it should only be used in indoor, protected environments.