10 Best Voltage Monitoring Relays In The Us
Best Choice1
LiebeWHVoltage Monitoring Relay DC 12V/24V/48V Over Voltage and Under Voltage Relay 35MM Rail Voltage Protector Device(DC 48V)
Main highlights- REAL-TIME MONITOR: The overvoltage undervoltage protector relay is convenient to use, real-time monitoring of dc overvoltage and undervoltage faults
- RAIL MOUNT: The voltage monitoring relay made of high quality meterial, with standard modular structure, rail type installation
- APPLICATION: The motor overvoltage protector can be used for dc motor, battery, UPS power supply, dc switchgear, dc panel, industrial control system
- ADJUSTABLE: The overvoltage protector is not additional auxiliary power supply is required. Both over-voltage and under-voltage value can be adjusted
- 2 INDICATOR LIGHT: Action time of over-voltage relay can be adjusted, 2 sets of normally open and normally closed contacts, 2 indicator lights indicate various working conditions
9.7Exceptional
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Value for Money2
YWBL-WH11% Off3 Phase Voltage Monitoring Sequence Relay JVR800-2 Voltage Relay Under Over Voltage Protector
Main highlights- The LCD can display data for easy reading.
- The Composition of This Product: Three-phase voltage protector, chronograph and counter are integrated in one relay.
- Practicality: This 3-phase voltage relay does not require an external power supply. Has practical functions: power delay, output test, etc.
- Function: This voltage relay has overvoltage, undervoltage, phase loss, phase sequence and unbalanced three-phase voltage .
- 2 rest modules are optional, manual and automatic.
9.4Excellent
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3
GEYAGEYA Single Phase Voltage Relay Adjustable Over or Under Voltage Protection Monitor Relay 1SPDT 10A (GRV8-01,AC/DC110V-240V)
Main highlights- Voltage measurement accuracy<1%
- User may select operation mode through knob
- Relay Status:Its working status is indicated by the LED indicator.
- Product Size:Ultra-small size, only 18mm width, 35mm rail mounting.
- Controls its own supply voltage(True RMS measurement)
9.3Excellent
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4
YWBL-WHGRV8-05 Voltage Relay,3-Phase Voltage Monitoring Relay Phase Sequence Phase Failure M265
Main highlights- Small Size and Easy to Install: The voltage relay is ultra-small and can be mounted on a 35mm DIN rail.
- LED Indicator: The working status of the voltage control relay is indicated by the LED indicator.
- High Accuracy: The voltage relay has 8 adjustable rated voltages, and the voltage measurement accuracy is less than 1%.
- Convenient Monitoring: The voltage relay can monitor its own operating voltage (true rms measurement).
- Application: Equipment and control (tower cranes, elevators, agricultural equipment, refrigerated trucks); prevent reverse of equipment; normal/emergency power switch; prevent phase failure of dynamic loads.
9.2Excellent
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5
YWBL-WHYWBL-WH SVR1000 Single Phase Voltage Monitoring Sequence Relay Over-Voltage 50V-300V Under-Voltage 1V-90V AC/DC(AD220)
Main highlights- Universal Voltage Detection: Automatically identifies AC/DC voltage with no need to manually switch.
- Self-Powered: Requires no additional auxiliary power source.
- Modular Design: Features a standardized modular structure for rail-type installation.
- Comprehensive Display: Utilizes a built-in LCD screen to display voltage values, fault statuses, and setting parameters in Chinese.
- Advanced Monitoring: Monitors for single-phase over-voltage and under-voltage faults in real time.
8.9Very Good
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6
YWBL-WHYWBL-WH Voltage Monitoring Relay Over-Voltage and Under-Voltage Relay 35MM Rail 13-17V 10-14V(DC12V)
Main highlights- Typical Applications: The voltage monitoring relay is typically applied in dc motor, battery, UPS power supply, dc switchgear, dc panel, industrial control system.
- Real Time Monitoring: The voltage monitoring relay could achieve real-time monitoring of dc overvoltage and undervoltage faults, and over-voltage, under-voltage value, and action time can be adjusted.
- Product Name: Voltage Monitoring Relay; function: over voltage, under voltage; Rated voltage: DC 12V/24V/36V/48V; Overvoltage regulation range: 13-17v; Undervoltage adjustment range: 10-14v; capacity: 6A 250VAC (resistivity).
- Main Features: The voltage monitoring relay is of 2 sets of normally open and normally closed contacts, 2 indicator lights indicate various working conditions, no additional auxiliary power supply is required.
- 35mm Rail: With 35mm rail and standard modular structure, the voltage monitoring relay is easy to install, easy to operate.
8.6Very Good
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7
GAEYAELEGAEYAELE Voltage Protection Relay DC12V Over-Voltage and Under-Voltage Monitoring Relay (GRV8-02,D12)
Main highlights- Voltage Measurement: Voltage measurement accuracy<1%.
- The Principle Of Use: You can select the working mode by the knob.
- Relay Status : Its working status is indicated by the LED indicator.
- Product Size: Ultra-small size, only 18mm width, 35mm rail mounting.
- Controls its own supply voltage (True RMS measurement).
8.3Good
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8
EVTSCANEVTSCAN Latest DPA51CM44 3-Phase Monitoring Relay, Current/Voltage Monitoring Relay Phase Sequence Protector for Three-Phase System, Without Neutral, Phase Loss, 208-480VAC
Main highlights- Work Well: DPA51CM44 3-Phase Monitoring Relay features with strong anti-interference performance, so it helps maintain a constant and efficient work of the motor, it will provide an excellent performance during the working process
- Small Size: 2021 Improved Version, This 3-Phase Monitoring Relay has a smaller compact size for easier and convenient use and install, and the size of the Monitoring Relay is 8.1 x 6.7 x 1.75 cm/3.1 x 2.6 x 0.6 inch, you can install it on any places around the room, saving a lot of place
- Multi-functioanl: This DPA51CM44 3-Phase Monitoring Relay has a widely use on the electric filed, and it can be applied to motor protection, elevator, air conditioning system, power system and other industries, very helpful tool during daily life
- LED Indication: This DPA51CM44 Monitoring Relay features an LED indication for easier installation and trouble shooting, which permits a maximum degree of protection to be achieved for machines, plants and systems, and avoid far more significant subsequent damage, very convenient and useful
- 3-Phase Design: This Current Monitoring Relay is designed with 3-Phase Monitoring Relay to provide a correct phase sequence, without neutral, phase Loss and Incorrect phase sequence, so it can detect when all phases are present and have the correct sequence
8.2Good
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9
MARSTEKAdjustable Voltage Protector with Energy Monitoring Intelligent Relay Reset Protector Voltage Output Stabilizer for Home Office Appliance，AC110V DC85-300V 63A, Din Rail Mout
Main highlights- 【Wide-Ranging Applications】: Ideal for a variety of settings, this protector ensures the safe and efficient operation of electrical devices and systems. It’s suitable for use in motor protection, electrical control systems, household appliances, industrial equipment, lighting systems, and more, making it a versatile choice for both residential and industrial environments.
- 【Real-Time Monitoring】: Equipped with a real-time display, this protector allows you to continuously monitor voltage, current, and power levels, ensuring that your electrical systems operate within safe parameters. This added feature provides peace of mind and greater control over your equipment’s performance.
- 【Premium Fire-Resistant Material】: Crafted from high-quality fire-resistant PC material, the casing of this adjustable voltage and current protector is designed for safe and reliable use. It features precise measurement, responsive operation, and minimal heat generation, all while maintaining an aesthetically pleasing and durable design.
- 【Flexible Installation】: The rail-mounted design simplifies installation, making it quick and easy to set up. This versatile mounting option also allows for easy adjustment and repositioning to accommodate different installation needs and spatial constraints.
- 【Comprehensive Protection Functions】: This voltage and current protector offers a full range of protection, including overcurrent, overvoltage, and undervoltage safeguards. When the current or voltage exceeds preset limits, the relay automatically disconnects the power to prevent potential hazards such as fires, protecting your valuable electrical devices. The device also features an auto-reset function, restoring power when voltage and current return to normal levels.
8.1Good
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10
YWBL-WHYWBL-WH GRV8-04 M460 Voltage Relay,3-Phase Voltage Monitoring Relay Phase Sequence Phase Failure
Main highlights- Small Size and Easy to Install: The voltage relay is ultra-small and can be mounted on a 35mm DIN rail.
- LED Indicator: The working status of the voltage control relay is indicated by the LED indicator.
- High Accuracy: The voltage relay has 8 adjustable rated voltages, and the voltage measurement accuracy is less than 1%.
- Convenient Monitoring: The voltage relay can monitor its own operating voltage (true rms measurement).
- Application: Equipment and control (tower cranes, elevators, agricultural equipment, refrigerated trucks); prevent reverse of equipment; normal/emergency power switch; prevent phase failure of dynamic loads.
8.0Good
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