Voltage, current and frequency relays
Our relays are typically used for
- Monitoring fault current and leakage current in AC and DC installations
- Identification of insulation faults and current imbalance
- Detection of deviations in voltage AC/DC or current AC/DC
- Protecting equipment at too high or too low frequency
- Preventing damage to motors, transformers and electrical components
Voltage, current and frequency relays
Current, voltage and frequency relays - reliable monitoring of electrical values
Effective monitoring of fault current, voltage and power consumption is essential to ensure stable operation and protect equipment in both industrial and technical installations. Our range of current relays, voltage relays and frequency relays give you precise control over critical electrical parameters - both in AC and DC systems.
A current relay is typically used to monitor loads, detect leakage current, and provide early warning of insulation failure or overcurrent before it develops into a major fault. This makes relays particularly useful in systems with sensitive components, switchboards, or when measuring specific branch circuits.
Here is a selection of our many relays within current, voltage and frequency - Contact us to learn more
Power AC
IMAA
Benefits:
- For alternating current (AC)
- Differential current (earth fault) measurement with manual 30 mA test function
- 12 programmable measuring ranges for over- or undercurrent
- Individually adjustable switch-on and switch-off delay
- Relay function can be reversed (normal/inverse)
Voltage AC
UAWA
Mains voltage monitoring relay - UAWA
The mains voltage monitoring relay provides early warning of over- or undervoltage, protects equipment from damage and fire, increases personal safety and reduces downtime and maintenance costs.
Benefits:
- Separate upper and lower limit adjustment
- Separate DIP switch setting for upper and lower limit function
- Time delay adjustable separately
- LED indicators
Voltage AC-DC
UMCA
Multifunction voltage monitoring relay - UMCA
A multifunctional voltage monitoring relay that automates control and protection, preventing equipment damage, increasing safety and ensuring reliability with minimal downtime.
Benefits:
- For AC and DC voltage
- Input voltage range from 50 mV to 500 V
- 11 programmable entrance areas
- Separately adjustable on and off delay
- Adjustable upper and lower limit and differential
AC voltage and frequency
UFWA
Mains frequency and voltage monitoring relay - UFWA
A monitoring relay that measures voltage and frequency protects equipment against supply fluctuations and contributes to high operational efficiency, increased system stability and reduced downtime.
Benefits:
- Adjustable version with individual settings for under and over voltage, under and over frequency
- Function setting via DIP switch
- Ceramic resonator controlled reference
- Individually adjustable time delay - on and off
- One device for three mains voltages