1
Monitors three-phase voltage for optimal protection.
Detects phase loss, reversal, and imbalance.
Bright LED indicators for status awareness.
Universal input: 190-600 VAC voltage range.
Control voltage options: 115, 208/240 VAC.
Suitable for 50/60 Hz frequency applications.
Enhances equipment lifespan and reliability.
Average Rating out of 5:
Price Range: $68.85
2
Adjustable over/under voltage protection feature
True RMS voltage measurement for accuracy
Relay status indicated by LED indicator
Ultra-small size: 18mm width
Easy rail mounting for convenience
10A rating for AC/DC applications
Selectable operation mode via knob
Average Rating out of 5:
Price Range: $26.99
Color: GRV8-01
Material: Silver Alloy
3
High accuracy with less than 1% voltage measurement.
8 adjustable rated voltages for versatile applications.
Prevents phase failure and equipment reverse.
Indicates working status with LED indicator.
Monitors own operating voltage accurately.
Ultra-small design fits on 35mm DIN rail.
Easy installation for various control equipment.
Average Rating out of 5:
Price Range: $28.54
4
Reliable 3-phase protection for equipment safety.
Monitors phase reversal, loss, and unbalance percentage.
High/low voltage monitoring for added security.
Bright LED indicators for easy status visibility.
Easy installation with 8-pin plug-in mount.
Adjustable settings for versatile applications.
Compact design suitable for various environments.
Average Rating out of 5:
Price Range: $205.77
Material: Plastic
5
Automatically detects AC/DC voltage types.
Modular design for easy installation on guide rails.
LCD display shows voltage and fault status.
No auxiliary power needed for operation.
Continuously monitors over and under voltage conditions.
Compact and efficient single-phase voltage relay.
Ideal for various electrical applications and systems.
Average Rating out of 5:
Price Range: $30.49
Size: AD48
Material: Silver Alloy
6
Detects phase loss and low voltage issues. Phase reversal detection for enhanced safety. Compatible with 50Hz, 60Hz, and 400Hz models. Automatic or manual reset options available. Solid-state voltage sensing for reliability. CSA and UL certified for quality assurance. Compact design for easy installation and use.
Average Rating out of 5:
Price Range: $79.00
7
Three phase voltage monitoring relay.
Insulation monitoring for enhanced safety.
Compact design, 22.5mm width.
Screw terminal for easy installation.
Features 2 CO contacts.
Adjustable off delay: 0–20 seconds.
Compatible with 160–690 line supply voltage.
Average Rating out of 5:
Price Range: $100.12
Material: Copper Alloy
8
Protects against phase loss and reversal.
Monitors phase unbalance percentage effectively.
Bright LED indicators for status alerts.
Universal input range: 190-600 VAC.
Control voltage range: 18-30 VAC.
Ideal for industrial three-phase systems.
Robust design ensures reliable operation.
Average Rating out of 5:
Price Range: 0
Material: Copper
9
Monitors single and three-phase voltage levels.
Compatible with 160V to 690V supplies globally.
Digital settings with fault memory functionality.
LCD display for easy monitoring and reading.
Customizable phase imbalance from 0 to 20%.
Adjustable hysteresis from 1 to 20V.
Includes removable terminals for easy installation.
Price Range: $150.00
10
Manual or automatic resetting options available.
Compatible with BF09 to BF38 contactors.
Three poles for three-phase protection.
Phase failure and single phase sensitive.
Direct mounting simplifies installation process.
Rated for 4 to 6.5A current range.
Independent mounting with RFX38 04 base option.
Price Range: $64.99
11
Three-phase voltage monitoring for reliable operation.
Compact design with 22.5mm width for easy installation.
Screw terminal connections for secure wiring.
One CO contact for versatile applications.
Adjustable delay time for operational flexibility.
Compatible with 160–690V line supply voltage.
Lightweight design at 0.25 pounds for convenience.
Average Rating out of 5:
Price Range: $182.15
12
Standard modular structure for easy installation.
Three reset modes: manual, automatic, power-on delay.
AC/DC voltage universal; automatic identification.
Fault recording and output test functions included.
Built-in LCD for real-time voltage monitoring.
Adjustable over-voltage value and action time.
No additional auxiliary power supply needed.
Average Rating out of 5:
Price Range: $25.18
13
Double LED display for real-time monitoring. Adjustable overvoltage and undervoltage settings. Protects against damaging voltage fluctuations. Low power consumption for energy efficiency. Long mechanical life for durability. Flexible reset mode selection for convenience. Ensures continuous power supply and minimal downtime.
Price Range: $16.71
14
Three-phase voltage control for reliable operation.
Protects against phase sequence and failure issues.
Over and undervoltage protection included.
True RMS measurement ensures measurement accuracy.
Eight-level rated voltage settings via knob.
LED indicator displays relay working status.
Compact design, only 18mm width for easy mounting.
Average Rating out of 5:
Price Range: $19.99
Color: GRV8-04
Material: Silver Alloy
15
Monitors 3-phase voltage accurately and reliably.
Compatible with 208/240VAC AC systems.
Operates at a frequency of 60Hz.
Low power consumption of 2.4W.
Adjustment range from 160 to 240VAC.
Durable ABS plastic cover for protection.
Compact design for easy installation and use.
Price Range: $149.37
16
Easy installation on 35mm rail system.
Ideal for various industrial applications.
Automatic AC/DC voltage identification.
Built-in LCD display for monitoring.
Adjustable over-voltage settings and action time.
Real-time fault monitoring for safety.
No additional power supply needed.
Average Rating out of 5:
Price Range: $29.92
17
Three-phase voltage monitoring for motors and pumps.
Quick installation on 35mm rail or surface mount.
Indicators for normal operation and phase loss.
2-second delay for phase loss detection.
Prevents damage from reverse phase connections.
Detects voltage imbalance for safe operation.
Compatible with various electric applications and systems.
Average Rating out of 5:
Price Range: $14.08
Material: Silver
18
Reliable motor protection for three-phase systems.
Manual or automatic resetting functionality available.
Compatible with BF09 to BF38 contactors.
Independent mounting with RFX38 04 base option.
Phase failure detection for enhanced safety.
Rated for 13 to 18A applications.
Easy installation with direct mounting capability.
Average Rating out of 5:
Price Range: $86.39
Material: Silver Alloy
19
Monitors operating voltage with true RMS measurement.
Eight adjustable rated voltages for flexibility.
Measurement accuracy below 1% ensures reliability.
Suitable for various applications like cranes and elevators.
Prevents phase failure of dynamic loads effectively.
LED indicator shows working status clearly.
Compact design for easy DIN rail installation.
Price Range: $28.72
Material: Copper
20
Strong anti-interference performance for efficient operation.
Detects phase sequence and phase loss accurately.
Widely used in various industrial applications.
Compact design saves installation space easily.
Ensures continuous motor operation and efficiency.
Easy to install in any environment.
Enhances safety in electrical systems and equipment.
Average Rating out of 5:
Price Range: $23.05
Material: Silver
21
Modular structure for easy installation.
Automatic AC/DC voltage identification.
Built-in LCD displays voltage and faults.
Monitors single phase over/under voltage.
No auxiliary power supply needed.
Compatible with 35MM guide rail.
Reliable protection for electrical systems.
Average Rating out of 5:
Price Range: $24.07
