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After deep searching of thousands and millions of articles and reviews by our dynamic Artificial Intelligence & Machine Learning tools; and detailed refining, inspection and infiltration by our specialized tech gurus, the golden shortlist for the Best Current Monitoring Relays (2021) is finally drafted.

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In order to come up with the Best Current Monitoring Relays (2021), our dynamic platforms and experts have taken many parameters into account such as product usability, user-friendly features and give buyer satisfaction, defect and deficiency-free, conformance of standards, worthiness-for-money, reliability, quality of design, quality conformance to user requirements and good practises, protection and safety, actual user satisfaction and numerous others. It is worth to mention that each user has different requirements so please consider the below benchmarking as a guide and not as a gospel. In any case, in the list below you can definitely find the overall best ones regardless of your requirements.

Our brilliant platforms and competent hi-technology gurus work hard to provide you with the best product choices. We firmly believe that that our review benchmarking can help you simplify your purchase decision and choose among the absolute Best Current Monitoring Relays (2021).

Best Current Monitoring Relays

Best Choice No. 1
DPA51CM44 3-Phase Monitoring Relay Current/Voltage Monitoring Relay Phase Sequence Protector for Three-phase System Without Neutral Phase Loss and Incorrect phase Sequence 208-480VAC
DPA51CM44 3-Phase Monitoring Relay Current/Voltage Monitoring Relay Phase Sequence Protector for Three-phase System Without Neutral Phase Loss and Incorrect phase Sequence 208-480VAC
  • Small Size: This 3-Phase Monitoring Relay has a small compact size for easy 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
  • 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
  • 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
  • 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
$16.49
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Best Choice No. 2
GAEYAELE GRI8-01 Current Monitoring Relay Current Range 8A 16A AC24V-240V DC24V Overcurrent Protection Relay(GRI8-01/16,AC24V~240V,DC24V)
GAEYAELE GRI8-01 Current Monitoring Relay Current Range 8A 16A AC24V-240V DC24V Overcurrent Protection Relay(GRI8-01/16,AC24V~240V,DC24V)
  • Function Feature: Adjustable delay 0.5-10 s to eliminate short current peaks.
  • Instructions: Flexible adjustment by potentiometer, choice of 6 ranges.
  • Relay operating range: Current scan for current transformers. Universal Power AC 24 – 240V and DC 24 V.
  • Relay Status : Its working status is indicated by the LED indicator.
  • Product Size: Ultra-small size, only 18mm width, 35mm rail mounting.
$22.90
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Best Choice No. 3
Current Monitoring Relay, DPDT, 4 A, DIN Rail, 250 V, Screw
Current Monitoring Relay, DPDT, 4 A, DIN Rail, 250 V, Screw
  • Price For: Each Product Range: – Contact Configuration: DPDT Contact Current: 4A Relay Mounting: DIN Rail Contact Voltage VAC: 250V Relay Terminals: Screw Contact Voltage VDC: 250V Supply Voltage Max: 240V Current Monitoring Range Min: 300mA Current Monitoring Range Max: 15A Power Consumption: – Approvals & Standards: CSA, IEC, UL
$313.84
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Best Choice No. 4
Siemens 3UG4622-1AW30 Monitoring Relay, Single Phase Current Monitoring, 22.5mm Width, Screw Terminal, 1 CO Contacts, 0.05A AC/DC Measuring Range, 0.01A-5A Hysteresis, 0-20 s Starting Bypass Time, 0-20 s Off Delay, 24-240VAC/DC Auxiliary Voltage
Siemens 3UG4622-1AW30 Monitoring Relay, Single Phase Current Monitoring, 22.5mm Width, Screw Terminal, 1 CO Contacts, 0.05A AC/DC Measuring Range, 0.01A-5A Hysteresis, 0-20 s Starting Bypass Time, 0-20 s Off Delay, 24-240VAC/DC Auxiliary Voltage
  • 22.5 mm wide
  • Can be digitally set and with LCD display
  • Fault memory that can be switched-in
  • Simultaneous monitoring for current over range/under range over the complete measuring range
  • Wide-voltage versions reduce stock inventory costs
$210.46
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Best Choice No. 5
CrocSee Miniature Current Switch, CS-TS0, Normally Open Amp Sensor Monitoring Relay, AC 1-50A Detectable
CrocSee Miniature Current Switch, CS-TS0, Normally Open Amp Sensor Monitoring Relay, AC 1-50A Detectable
  • N.O. Universal Outputs: 2.5A @ 120 VAC/240VAC; In 240V circuit, only one 120V hot line is connected.
  • Self-powered, no external power supply required
  • Accurate & Dependable: Offers a sensing range of 1 to 50 amps and universal, solid-state outputs; Accuracy: 1%
  • Faster Response Time: Once current flow is detected, it closes a set of contacts immidiately; Response Time: ≤200ms
  • NOTE: If you want to test the operation of the sensor switch, a load must be applied across the NO contacts; otherwise, it will not work.
$19.99
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Best Choice No. 6
KouTouy Current Switch, Normally Open AMP Sensor Sensing Switch Monitoring Relay, Time Delay with 5 Minutes, AC 1-50A Detectable
KouTouy Current Switch, Normally Open AMP Sensor Sensing Switch Monitoring Relay, Time Delay with 5 Minutes, AC 1-50A Detectable
  • ☛Self-powered, no external power supply required.
  • ☛Offers a sensing range of 1 to 50 amps and universal, solid-state outputs.
  • ☛The device output will switch loads at 120 Vac and 2.5 Amps maximum. In 240V circuit, only one 120V hot line is connected.
  • ☛Faster response time, once current flow is detected, it closes a set of contacts immidiately.
  • ☛Accurate and dependable, offers a sensing range of 1 to 50 amps and universal, solid-state outputs. Accuracy: 1%
$19.87
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Best Choice No. 7
CR Magnetics CR4395-EH-120-110-X-CD-ELR-I Current Sensing Relay with Internal Transformer, 120 VAC, Energized on High Trip, 1 - 10 AAC Trip Range
CR Magnetics CR4395-EH-120-110-X-CD-ELR-I Current Sensing Relay with Internal Transformer, 120 VAC, Energized on High Trip, 1 – 10 AAC Trip Range
  • Current sensing relay for monitoring electrical current
  • Current carrying wire is routed through an aperture
  • Electrical isolation between circuits (SPDT)
  • Variable trip point range with adjustable timer for stability
  • UL recognized for safety and RoHS compliant for hazardous substances
$79.33
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Best Choice No. 8
CR Magnetics CR4395-EL-120-110-B-CD-ELR-I Current Sensing Relay with Internal Transformer, 120 VAC, Energized on Low Trip, 1 - 10 AAC Trip Range, 2 - 25 Second Trip on Delay
CR Magnetics CR4395-EL-120-110-B-CD-ELR-I Current Sensing Relay with Internal Transformer, 120 VAC, Energized on Low Trip, 1 – 10 AAC Trip Range, 2 – 25 Second Trip on Delay
  • Current sensing relay for monitoring electrical current
  • Current carrying wire is routed through an aperture
  • Electrical isolation between circuits (SPDT)
  • Variable trip point range with adjustable timer for stability
  • UL recognized for safety and RoHS compliant for hazardous substances
$88.79
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Best Choice No. 9
CR Magnetics CR4395-EH-240-110-X-CD-ELR-I Current Sensing Relay with Internal Transformer, 240 VAC, Energized on High Trip, 1 - 10 AAC Trip Range
CR Magnetics CR4395-EH-240-110-X-CD-ELR-I Current Sensing Relay with Internal Transformer, 240 VAC, Energized on High Trip, 1 – 10 AAC Trip Range
  • Current sensing relay for monitoring electrical current
  • Current carrying wire is routed through an aperture
  • Electrical isolation between circuits (SPDT)
  • Variable trip point range with adjustable timer for stability
  • UL recognized for safety and RoHS compliant for hazardous substances
$84.56
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Best Choice No. 10
CR Magnetics CR5395-EH-ACV-101-X-CD-ELR-I DC Current Sensing Relay with Internal Transformer, 85-265 VAC/VDC, Energized on High Trip, 10-100 ADC Trip Range
CR Magnetics CR5395-EH-ACV-101-X-CD-ELR-I DC Current Sensing Relay with Internal Transformer, 85-265 VAC/VDC, Energized on High Trip, 10-100 ADC Trip Range
  • Current sensing relay for monitoring electrical current
  • Current carrying wire is routed through an aperture
  • Magnetic modulator technology for a stable and repeatable current trip
  • Variable trip point range with adjustable timer for stability
  • UL recognized for safety, CSA certified for quality assurance, and RoHS compliant for hazardous substances
$75.58
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