10 Best Voltage Protect Relay In The Us - Black Friday 2024
Best Choice1
Academic PressPractical Power System and Protective Relays Commissioning
9.7Exceptional
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Value for Money2
CRC PressDigital Protective Relays: Problems and Solutions
9.5Excellent
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3
CZH-LABSCZH-LABS LVD Low Voltage Disconnect Module. (12V / 30Amp)
Main highlights- To protect electronics from damaging low voltages and prevent a deep discharge of a battery during an extended power outage, the LVD module will automatically disconnect the battery when the voltage falls below the user adjustable cutoff voltage. When power is restored the Smart Switch will automatically reconnect the battery. thereby protecting the battery from total discharge (helping to prolong the life of the battery).
- Set rocker switch to AUTO, when the battery voltage drops to less than or equal Disconnect Value and continuously held for 5 seconds, load switch will OFF. When the battery voltage rise to greater than or equal Reconnect Value and continuously held for 5 seconds, load switch will return to ON state. this will better prevent malfunction.
- Programmable voltage setting for Disconnect and Reconnect (rocker switch set to AUTO). With emergency ON or OFF function, if you want switch output to be immediate and remain ON or OFF, you can set rocker switch to ON or OFF.
- Operating Voltage: DC 6 to 18V, Rated current: 30 Amp.
- Based on Microcontroller and MOSFET (on status resistance < 0.003 ohm), more precise voltage, smart and long life switch output. Green-red dual color LED indication for output switch ON and OFF.
9.2Excellent
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4
NarooteJvr800-2 Voltage Stabilizer, Adjustable Voltage Protector, 3 Phase Under Over Voltage Protector Relay with Protective Functions for Phase Loss and Unbalanced Voltage
Main highlights- 【Practical functions】The 3 phase under over voltage protector has useful functions such as power delay, output test, etc.
- 【Multifunctional design】 Jvr800-2 Voltage Stabilizer,Voltage stabilizer is equipped with functions for overvoltage, undervoltage, phase loss, phase sequence and unbalanced three-phase voltage.
- 【LCD display】 Adjustable Voltage Protector,Adjustable voltage protector with LCD screen can display data for easy reading.
- 【Easy to use】The Voltage Relay does not require an external power supply.
- 【3 in 1】Three-phase voltage protector, timer and counter integrated in one relay.
9.1Excellent
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5
CRC Press20% OffPower System Protective Relaying (Power Systems Handbook)
8.8Very Good
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6
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)
8.7Very Good
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7
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.
8.4Good
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8
TEZLUCAZTEZLUCAZ 60A Din Rail 230V Adjustable Over and Under Voltage Protective Device Protector Relay Monitor Current Limit TOVPD1-63-EC(60A)
Main highlights- Voltage Monitoring Relays
- Relays
- Protector Relay
8.2Good
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9
CZKE60A Din Rail 230V Adjustable Over and Under Voltage Protective Device Protector Relay Monitor Current Limit TOMZN TOVPD1-63-EC (Color : 40A)
8.1Good
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10
LiebeWHVoltage Monitoring Relay DC 12V/24V/48V Over Voltage and Under Voltage Relay 35MM Rail Voltage Protector Device(DC 12V)
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
7.9Good
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