Modular voltage control relay | 1-phase | 8A | 230VAC | 225-275V | 165-215V | mechanical | DIN rail

Technical Specifications

Type: Single-phase voltage monitoring relay
Supply terminals: A1, A2
Rated voltage: 230V AC
Frequency: 50/60 Hz
Operating voltage range: 150–275V AC
Overvoltage setting range: 225–275V
Undervoltage setting range: 165–215V
Hysteresis: ±3% of set value
Measurement method: True RMS
Measurement accuracy: <1%
Trip delay: 0.1–10 s
Delay accuracy: ±5% + 0.1 s
Output contacts: 11, 12, 14
Contact type: 1C/O (1 changeover contact)
Rated current: 8A (AC1)
Contact load (AC-15): 2A
Insulation voltage: 250V
Max. fuse: RT36-00, 5A
Mounting: DIN rail (1 module)
Protection class: IP20
Pollution degree: 3
Electrical lifetime: 100,000 cycles
Mechanical lifetime: 1,000,000 cycles
Operating temperature: -25°C to +50°C
Storage temperature: -25°C to +55°C
Humidity: ≤50% (non-condensing)
Altitude: ≤2000 m
Wire cross-section: 0.5–1 mm²

Functions

Continuous voltage monitoring – real-time tracking of network parameters
Overvoltage and undervoltage protection – protects equipment from failures
True RMS measurement – accurate readings even with distorted voltage
Adjustable thresholds – customizable voltage limits
Adjustable response time – prevents false triggering
Automatic reset – no manual restart required
LED indication – clear status and fault signaling
Compact DIN mounting – occupies only 1 module in the panel

Applications

For household users: Protects home appliances (refrigerators, boilers, air conditioners); suitable for homes, cottages, or garages with unstable voltage

For engineers / industrial use: Used in automation systems and control cabinets; ensures equipment protection from voltage fluctuations; suitable for production lines, server rooms, and sensitive electronics

For electricians: Quick installation on DIN rail; easy parameter adjustment via potentiometers; reliable solution for panel assembly

Advantages

High accuracy (True RMS, <1% error)
Wide voltage adjustment range
Automatic recovery after fault
Compact size – only 1 DIN module
Simple and reliable operation
Clear LED indication for diagnostics
Long service life

Disadvantages

Single-phase only (not suitable for 3-phase systems)
IP20 – suitable only for panel installation (not for outdoor use)
Limited contact capacity (recommended to use with a contactor for higher loads)