Modular voltage control relay | 1-phase | 16A | 230VAC | 225-275V | 165-215V | mechanical | DIN rail

Technical Specifications

Type: Overvoltage and undervoltage protection relay
Control: Microcontroller-based
Supply voltage: 230V AC
Measurement voltage: 150–280V AC (True RMS)
Frequency: 45–65 Hz
Voltage measurement accuracy: ≤1%

Settings:

Overvoltage threshold: 225–275V (adjustable)
Undervoltage threshold: 165–215V (adjustable)
Hysteresis: 3%
Trip delay time: 0.1–10 s (adjustable)
Time accuracy: ±5% + 0.1 s
Setting accuracy: 1%

Electrical characteristics:

Output contacts: 1C/O (1 changeover contact)
Contact rating: 16A / 250V AC1
Insulation voltage: 480V
Electrical lifespan: 10⁶ cycles
Mechanical lifespan: 10⁵ cycles

Environmental conditions:

Protection class: IP20
Pollution degree: 3
Operating temperature: -20°C to +55°C
Storage temperature: -30°C to +70°C
Relative humidity: up to 50% (at 40°C, non-condensing)
Altitude: up to 2000 m

Installation:

Mounting: DIN rail (NS35)
Terminals: A1–A2
Wire cross-section: 0.5–2.5 mm²
Width: 1 module

Indication:

LED indicator – power / status
LED indicators – overvoltage / undervoltage
Relay operation indicator
Functions
Automatic protection against overvoltage and undervoltage
True RMS measurement – accurate readings even in unstable networks
Adjustable voltage thresholds – adaptable to system requirements
Adjustable delay time – protection against short voltage spikes
Automatic reset (auto reset)
LED indication – clear status monitoring
Compact DIN format – easy installation
Applications

For household users:

Protects home appliances (refrigerators, boilers, TVs)
Ideal for areas with unstable voltage supply
Helps avoid costly equipment damage

For electricians:

Easy installation on DIN rail
универсal use in distribution boards
Quick setup according to project requirements

For engineers / industry:

Used in automation systems
Suitable for protecting industrial equipment
Stabilizes power supply for sensitive systems
Advantages
High accuracy (True RMS, ≤1% error)
Adjustable voltage limits and timing
Compact – only 1 DIN module
LED indication – clear diagnostics
Reliable operation in various conditions
Long service life
Disadvantages
IP20 – not suitable for direct outdoor use
Single-phase system only