10 Best Voltage And Current Relay In The Us - Black Friday 2024
Best Choice1
AprilaireAprilAire 50 Low Voltage Current Sensing Relay for AprilAire Whole-House Evaporative Humidifiers
Main highlights- VOLTAGE RANGE of 21-24 VAC, 50-60 Hz and Sensing Current of a minimum of 4.0 amps
- ENSURES HUMIDIFIER OPERATION only when the furnace blower motor is running to properly distribute humidity throughout your home
- COMPACT SIZE with dimensions of 1 inch x 1.44 inches x 2.75 inches
- CAN BE USED in conjunction with either an Automatic or Manual Humidifier Control/Humidistat
- BUY WITH CONFIDENCE This genuine AprilAire HVAC part helps optimize the performance of your AprilAire Whole Home Humidifier and protect the humidifier's precision electrical components from feedback current
9.9Exceptional
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Value for Money2
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
9.7Exceptional
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3
CrocSeeCrocSee Miniature Current Switch, CS-TS0, Normally Open Amp Sensor Monitoring Relay, AC 1-50A Detectable
9.6Exceptional
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4
Hilitand12V DC Current Detection Module Digital Display Current Sensor Module Relay Module Voltage Tester Sensor
Main highlights- Practical Using: The DC current detection module comes with error calibration function, and the display can also be turned off for a long time to reduce power consumption.
- High Accuracy: The current detection module has a high accuracy up to 0.01A, which ensures small error for easier and more efficient work.
- Easy : Digital display enables a clear view to the work status, and the simple will help to prevent the stalling as well.
- Detection Range: Can conveniently detect DC 7?30V current between 0?10A, and the detection voltage is equal to the input power voltage.
- Control Module: When the current is too large or too small, the relay switch will control line to connect and disconnect, or give a .
9.5Excellent
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5
nodehawknodehawk Current Sensing Relay AC Current Sensing Switch 0-30A Normally Open Current Sensor Monitoring Relay (M3050)
Main highlights- Upgrade: Compared with traditional transformers, thermal protectors and other devices, using this device can not only get more accurate and timely control, but also greatly simplify the design and reduce costs. Self-powered, no external power supply required. Input through current: 0-30A AC Rated load: 0.3A@240V AC/DC
- Multi-Purpose: M-3050 AC current sensing switch is specially designed and manufactured to solve AC current monitoring. It uses the principle of mutual inductance to sense AC direct current, isolate the AC current, output normally open or normally closed switch signals, and directly control various automated industrial equipment, such as flash lamps, buzzers, relays, microcontrollers or other power load equipment
- LED Indication: The action current is 0-30A AC, which can be adjusted by the potentiometer. The LED indicator light can easily and intuitively indicate the working status of the switch
- High Performance: The switch has no limit on the number of times of opening and closing, and the response speed reaches the millisecond level. The hysteresis is less than 1% and can be used under strong magnetic conditions. Through structure design, isolation withstand voltage up to 2000V
- ABS material: High-power MOS tube non-contact electronic switch is used, and the shell is made of self-extinguishing material ABS, which is heat-resistant, acid-alkali-resistant, high impact strength and stable in performance
9.4Excellent
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6
HilitandCurrent Sensing Switch, Normally Open Current Sensing Relay Adjustable AC 0.2A -30A (SZC23 No AL-CH Model)
Main highlights- The switch has no limit on the number of opening and closing, and the speed reaches the ms level.
- Self-powered, no external power supply required.
- LED indicator can conveniently and intuitively indicate the working status of the switch.
- High-power MOS tube contactless electronic switch.
- Action current 0.2-30A AC, adjustable with a potentiometer.
9.3Excellent
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7
iRhapsodyirhapsody Relay 250A, 12V Continuous Duty Relay, 5 Pin Starter Relay, Spdt High Current High Power On/Off Control Relay, Split Charge Heavy Duty Relay Switch
Main highlights- The size of the round stud terminals: M8/8mm
- Rated voltage: 12vdc; Pickup voltage: 8v; Dropout voltage: 1.2v
- Our coil power is 1.8W, and coil resistance is 80ohms. It is more reliable than 2.4W (60 ohms) and 4.8W (30 ohms) relays on the market
- Large capacity, high current carrying capacity, heavy-duty make/break relay. But never go beyond its capabilities, try to stay 10 to 15% below what the rate is for
- Ideal for split charging or any vehicle needing a high power relay
9.2Excellent
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8
MiOYOOWVoltage Monitor Module, A30-U1 DC 0-99.9V Delay Relay Controller Board for Overvoltage Undervoltage Control Voltage Detection
Main highlights- After-Sale Service: Thanks for your purchase. If you have any problem , please feel free to contact us any time. We promise you the satisfying solutions within 24 hours.
- 4>ON L’ : Relay output will turn ON if the Current Measured Voltage Value is less than the Lower Limit Voltage Value. Relay output will turn OFF if the Current Measured Voltage Value is more than the Upper Limit Voltage Value.It can be applied to battery charging mode. Automatically enter detection status after set parameters and screen stop flashing.
- 3>Its Set Range Is D-0 ~ D-9 Which Means After 1~9minute, The Screen Will Turn OFF. Note: d-0 means the screen will keen ON all the time. The 5th parameter is to set the Relay Triggering Status ‘ON H’ or ‘ON L’. ‘ON H’ : Relay output will turn ON if the Current Measured Voltage Value is more than the Upper Limit Voltage Value. Relay output will turn OFF if the Current Measured Voltage Value is less than the Lower Limit Voltage Value. It can be applied to battery discharging mode.
- 2>Then Then First Parameter ‘Upper Limit Voltage Value’ Has Been Set. Press SET Button At 4th Time To Set Next Parameter The Lower Limit Voltage Value In The Same Methods. Note: its value needs less than the Upper Limit Voltage Value. The third parameter is to set the Voltage Verification Value. Its set range is -0.5V~0.5V. The 4th parameter is to set the Display Screen Automatically Turns OFF Remaining Time Value.
- 1>Screen display Current Measured Voltage Value automatically after power ON. Press SET button enter into set mode and the first bit will keep flashing. The first parameter set is the Upper Limit Voltage Value. Press ENTER button to set first bit value. Its set range is 0~9 as your needs. Press SET button again to switch select the next bit and press ENTER button to change value. Press SET button at 3rd time to switch select the last bit and press ENTER button to change value.
8.9Very Good
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9
OONOOONO DPST 1NO 1NC 8Amp Power Relay Module, AC/DC 12V Control Voltage
Main highlights- This is a simple and practical passive relay module, which is very convenient to use. It can support both Normally Open and Normally Close. Two screw mounting holes are convenient for you to fix it on the wall or wooden board. Of course, you can also choose not to lock the screw.
- Output switch DPST 1NO 1NC(Double Pole Single Throw, 1x Normally Open and 1x Normally Close ), rated current 8A/250VAC or 8A/30VDC (one switch).
- Input control signal: Voltage AC or DC 12V, Current 33mA.
- Compact plastic case and wires connects for easy mount. LED indication for relay action.
8.7Very Good
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10
Tyenaza3-Phase Monitoring Relay, Current/Voltage Monitoring Relay Phase Sequence Protector for Three-Phase System, Without Neutral(GRV8-04,M460)
Main highlights- 【Rated Voltage】: Rated Voltage up to 552AC Voltage measurement accuracy<1%.
- 【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%.
- 【Application】: Equipment protection and control (tower cranes, elevators, agricultural equipment, refrigerated trucks); prevent reverse operation of equipment; normal/emergency power switch; prevent phase failure of dynamic loads.
- 【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
8.6Very Good
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