Modular | digital voltage and current monitoring | protection relay | 1-phase | 1-63A | 230V | DIN

Technical Specifications:

Nominal supply voltage: 230V AC
Operating voltage range: 80–400V AC (single-phase)
Frequency: 50/60 Hz
Adjustable limits:
• Overvoltage: 240–300V (default: 270V)
• Undervoltage: 140–210V (default: 170V)
• Overcurrent: 1–63A (default: 63A)
Voltage measurement accuracy: ±1% (full scale)
Response delay to over/undervoltage: 0.5 s
Recovery/startup delay: 1–600 s (default: 30 s / 58 s)
Nominal insulation voltage: 400V
Output contact: 1 NO (normally open)
Electrical durability: 100,000 cycles
Mechanical durability: 1,000,000 cycles
Protection class: IP20
Pollution degree: 3
Operating temperature: -50°C to +55°C
Humidity: ≤50% at 40°C (non-condensing)
Storage temperature: -30°C to +70°C
Power consumption: <2W
Mounting: 35 mm DIN rail

Functions:

Protection against overvoltage, undervoltage, and overcurrent
Adjustable protection parameters (voltage and current limits)
Real-time voltage and current measurement
Clear display indicators
Fast response to power anomalies (0.5 s)
Delay settings for system stability
Automatic recovery after failure
Electromechanical reliability up to 100,000 operating hours

Applications:

In household electrical installations
For protecting sensitive equipment (electronics, refrigerators, boilers, etc.)
In distribution boxes or protection cabinets
In industrial and commercial environments with unstable voltage
As additional protection in solar and wind power systems

Pros:

Easy DIN rail mounting
Clear real-time data display
Wide adjustment range (voltage, current, delay time)
Compact design saves panel space
Protects against major power disturbances
Suitable for both residential and industrial use

Cons:

IP20 protection class – not suitable for humid or dusty environments without additional enclosure
Only for single-phase systems (cannot be used directly in three-phase systems without additional solution)
Not recommended for extreme temperature fluctuations without insulation