10 BEST VOLTAGE MONITORING RELAYS for sale in 2022 – compare between the best voltage monitoring relays on sale.

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1
Lovato Electric PMV10A440 Inc - Voltage Monitoring Relay for Three-Phase System, Without Neutral, Phase Loss and Incorrect Phase Sequence, 208-480Vac 50/60Hz
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Product Highlights
  • Voltage monitoring relay
  • Three-phase system, without neutral
  • Phase loss and incorrect phase sequence
  • Instantaneous trip

$156.66
2
Voltage Monitoring Relay DC 12V/24V/36V/48V Over-Voltage and Under-Voltage Protection Relay 35MM Guide Rail 13-17V 10-14V(DC48V)
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Product Highlights
  • ✈ PRODUCT NAME---Voltage Monitoring Relay; Protection function: over voltage, under voltage; Rated voltage: DC 12V/24V/36V/48V; Overvoltage regulation range: 13-17v; Undervoltage adjustment range: 10-14v; Contact capacity: 6A 250VAC (resistivity)
  • ✈ 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
  • ✈ 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 GUIDE RAIL---With 35mm guide rail and standard modular structure, the voltage monitoring relay is easy to install, easy to operate

$30.79
3
Power Supply Monitor Relay, 3 Phase Circuit Protection Voltage Monitoring Relay Phase Failure Sequence Protector for Motors Pumps
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Product Highlights
  • ✔Features: The protector base adopts 35mm rail type or device type, and has two screw hole structures inside, which can be directly installed separately or HT35 rail. Indicated by three indicators: normal, phase loss(voltage three-phase unbalance), reverse phase
  • ✔Phase loss protection: Phase loss protection means that when the protected line is in the running state or non-operating state, any phase failure occurs, and the delay is 2S
  • ✔Reverse phase protection: Reverse phase protection, a protection measure to prevent L1, L2, L3 three-phase AC phase sequence from being connected incorrectly, delay 2S action
  • ✔Voltage imbalance protection: Voltage imbalance protection, which refers to a protective measure that will affect the safe operation of the line due to three-phase voltage imbalance

$26.69
4
Voltage Monitoring Relay, GRV8-02 Single-Phase Voltage Control Monitoring Relay for Electrical Equipment or Compressors, Emergency/Backup Power Switching Control(GRV8-02/AD240)
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Product Highlights
  • Monitor the working voltage (true RMS measurement).
  • The operating mode can be selected via the rotary knob.
  • High accuracy, voltage measurement accuracy is ≦ 1%.
  • The working status of the relay is indicated by the LED indicator, which is simple and convenient.

$29.99
5
3 Phase Voltage Monitoring Sequence Relay JVR800-2 Voltage Protection Relay Under Over Voltage Protector
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Product Highlights
  • The Composition of This Product: Three-phase voltage protector, chronograph and counter are integrated in one relay.
  • Function: This voltage protection relay has overvoltage, undervoltage, phase loss, phase sequence and unbalanced three-phase voltage protection.
  • Practicality: This 3-phase voltage relay does not require an external power supply. Has practical functions: power delay, output test, etc
  • 2 rest modules are optional, manual and automatic.

$38.99
6
Siemens 3UG4512-1BR20 Monitoring Relay, Three Phase Voltage, Insulation Monitoring, 22.5mm Width, Screw Terminal, 2 CO Contacts, Delay Time, 160-690 Line Supply Voltage
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Product Highlights
  • Country of Origin : United States
  • Package Weight: 0.1 pounds
  • Package Dimensions: 3.048 H x 10.921 L x 9.906 W (centimetres)

$85.28
7
Lovato Electric PMV55A240 Inc - Voltage Monitoring Relay for Single-Phase System, Minimum and Maximum AC Voltage, 208-240Vac 50/60Hz
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Product Highlights
  • Voltage monitoring relay
  • Single phase system
  • Minimum and maximum AC Voltage
  • Delayed trip

$242.63
8
415VAC Three-Phase Power Relay, 5A Voltage Monitoring Relay, Contact 250VAC 2.5A, 30VDC 1.5A, Phase Sequence Protection Relay, for Electric Motor, Distribution Box, Pump
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Product Highlights
  • It is an indispensable protection product for the normal working voltage of the maintenance equipment in the operation of industrial equipment. Installation method: The base of the protector adopts the rail type, and there are two M4 screw holes in the structure, which can be directly installed separately or installed on the HT35 rail.
  • Indicator light: Indicated by 5 indicators: normal, lack of phase (voltage three-phase unbalance), reverse phase, overvoltage, undervoltage. Voltage unbalance protection: It refers to a protection measure that the three-phase voltage imbalance will affect the safe operation of the line. When the three-phase unbalance rate x100%>10%, the protection delay 2S action.
  • Phase loss protection: When the protected line is in the running state or non-operating state, any phase failure occurs, and the delay is 2S. Reverse phase protection: A protection measure to prevent L1, L2, L3 three-phase AC phase sequence from being connected incorrectly, delay 2S action.
  • Overvoltage protection: It means that the voltage of the protected line is higher than the set value, and the delay is 3~8S, and the recovery is 6~20VAC. Undervoltage protection: It means that the voltage of the protected line is lower than the set value, the delay is 3~8S, and the recovery is 3~20VAC.

$23.20 $21.09
9
Voltage Monitoring Relay, VA Series, DPDT, 10 A, Socket, 240 VAC, Quick Connect
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Product Highlights
  • Price For: Each

$85.73
10
Acogedor Voltage Monitoring Relay, SVR1000 Single Phase Over-Voltage Under-Voltage Protection Relay, 35MM Guide Rail (AD220)
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Product Highlights
  • ★★★★★Standard modular structure, guide rail type installation.
  • ★★★★★Ac/dc voltage universal, automatic identification of ac/dc voltage, no need to switch.
  • ★★★★★Built-in LCD Chinese display voltage value, fault status, setting parameters.
  • ★★★★★Real-time monitoring of single phase over-voltage and under-voltage fault.

$31.69

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