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

Technical Specifications

Type: single-phase voltage monitoring relay
Power supply terminals: A1, A2
Rated voltage: 230V AC
Frequency: 50/60 Hz
Operating voltage range: 150–275V AC
Overvoltage setting range: 225–275V
Hysteresis: ±3% of the set value
Measurement method: True RMS
Measurement accuracy: <1%
Response 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 lifespan: 100,000 cycles
Mechanical lifespan: 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

Overvoltage protection – automatically disconnects the load when voltage exceeds the set limit
True RMS measurement – ensures accurate operation even in unstable networks
Adjustable threshold – easy setting (225–275V)
Adjustable delay – from 0.1 to 10 seconds
Automatic reset – system reconnects when voltage returns to normal
LED indication – clearly displays status and faults
Compact DIN mounting – only 1 module

Applications

For residential users:
Protects household appliances (refrigerators, boilers, pumps)
Used in home electrical distribution boards
Helps prevent equipment damage caused by voltage spikes

For industry and engineering:
Protection of equipment in production lines
Monitoring stability of electrical networks
Integration into automated systems

For electricians:
Assembly and modernization of electrical panels
Easy installation on DIN rail
Universal solution for various projects

Advantages

Highly accurate True RMS measurement
Adjustable parameters (voltage + time)
Compact design – only 1 module
Automatic reset function
Clear LED indication
Wide operating voltage range
Suitable for both residential and industrial use

Disadvantages

Protects only against overvoltage (not undervoltage)
Limited contact capacity (recommended to use with a contactor for higher loads)
IP20 – intended for installation inside electrical panels only