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Best Current Monitoring Relays - Buying Guide

Last Updated: 09/21/2019

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Bestselling Current Monitoring Relays on Amazon

  1. Current Sensing Switch,Normally Open Current Sensing Switch Adjustable AC 0.2A -30A (SZC23-NO-AL-CH ...
  2. 4 Channel Decoder Relay, AD22B04 12V DTMF Tone Signal Decoder Relay(10A/250VAC,10A/125VAC,10A /30VDC...
  3. High Power 100A 1600V Three Phase Diode Bridge Rectifier MDS100A Black Three-Phase Diode Bridge Rectifier
  4. 12V 8-Channel Bluetooth Relay Module Remote Control Switch Board for Android
  5. Current Sensing Switch, Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL-CH
  6. KLIXON 3CR-208-157 3CR SERIES MOTOR STARTING RELAYS CURRENT TYPE GRAVITY DEPENDENT
  7. Siemens SMFH34 Heater Element, Class SMF, 3.46-3.70A Motor Full Load Current
  8. Siemens SMFH22 Heater Element, Class SMF, 1.30-1.39A Motor Full Load Current
  9. DPA51CM44 3-Phase Monitoring Relay, Current/Voltage Monitoring Relay Phase Sequence Protector for Th...
  10. AD22B04 12V 4 Channel DTMF Tone Signal Decoder Relay Phone Remote Control PLC

  #1

Current Sensing Switch,Normally Open Current Sensing Switch Adjustable AC 0.2A -30A (SZC23-NO-AL-CH Model)

 Ean: 0719527953316   |    PartNumber: Hilitand8k3b14u2na   |   Asin: B07N1P6TWL

SZC23 series AC current sensing switch is designed and manufactured to solve the AC current monitoring. It uses the principle of mutual inductance to sense the AC straight-through current, isolate the AC current, and output a normally open or normally closed switching signal to directly control various automation industrial equipment, such as flash, buzzer, relay, single-chip or other power load equipment.


Features:
1. Straight-through structure design, isolation withstand voltage up to 2000V.
2. Hysteresis is less than 1% and can be used under strong magnetic conditions.
3. The outer casing is made of self-extinguishing material ABS.
4. Suitable for AC current measurement and monitoring, AC motor overload protection, electronic switch of automatic control system and so on.


Specification:
Model: SZC23-NO-AL-CH
Power supply: Not required
Rated load: 0.5A@240V AC/DC
Input current: 0.2-30A AC
Switch on minimum: 0.5 0.2A
Maximum overload: 100%
Leakage current: 0.1A
Accuracy: 1%
Hysteresis: 1%
Response time: 200ms
Repeatability: 100%
Working temperature: -20~60
Waterproof: IP30
Dimensions: 65*25*47mm / 2.56*0.98*1.85in
Hole diameter: 10mm / 0.4in
Package weight: Approx. 56g/2.0oz


Package list:
1 * Current Sensing Switch


Note:
1. Due to the difference between monitors and light effects, the pictures may not reflect the actual color of the item.
2. Please allow slight error due to manual measurement. Thanks for your understanding.

Features

  • Self-powered, no external power supply required.
  • Action current 0.2-30A AC, adjustable with a potentiometer.
  • LED indicator can conveniently and intuitively indicate the working status of the switch.
  • High-power MOS tube contactless electronic switch.
  • The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.
  • See more on Amazon...

Brand: Hilitand   |   Manufacturer: Hilitand

Item Dimensions: 0.98 x 1.97 x 2.56 inches (2.5 x 5.0 x 6.5 cm)   |   Package Dimensions: 1.81 x 2.99 x 3.31 inches (4.6 x 7.6 x 8.4 cm)

Amazon Price: $16.99 | as of 09/21/2019(3:34am pst)
Availibility: Usually ships in 24 hours
List Price: $16.99

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  #2

4 Channel Decoder Relay, AD22B04 12V DTMF Tone Signal Decoder Relay(10A/250VAC,10A/125VAC,10A /30VDC, 10A /28VDC,10A /12VDC)

 Ean: 0717444464410   |    PartNumber: Vikye8p46tzegb7   |   Asin: B07W82N1DH

Features:

Product model: AD22B04.

Working voltage DC 12V, with reverse polarity protection.

Operating Current: Standby 11-13 MA, 1 relay "open" 44MA, 2 relays "Open" 77MA, 3 relays "Open" 110MA, 4 relays"open" 140MA.

Eight modes of operation: Non-locking (Momentary ), self-locking (Toggle), inter-locking(Latch), 5/20/60/120/250-second delay.

The default control command is 1/2/3/4. Example: Dial 1 to control relay 1, dial 2 to control relay 2, dial 3 to control relay 3, dial 4 to control relay 4; control commands can be changed any 1-4 bits. (For more details, refer to "AD22B04_4 channel DTMF controller commands setting manual ").




Specifications:

Size: as the picture

Weight: 72g

Maximum load: 10A/250VAC ,10A/125VAC,10A /30VDC, 10A /28VDC ,10A /12VDC




Package Included:

1 x 4 Channel DTMF Tone Signal Decoder Relay

1 x cable





Features

  • Product model: AD22B04
  • Working voltage DC 12V, with reverse polarity protection
  • Operating Current: Standby 11-13 MA, 1 relay
  • Eight modes of operation: Non-locking (Momentary ), self-locking (Toggle), inter-locking(Latch), 5/20/60/120/250-second delay
  • The default control command is 1/2/3/4
  • See more on Amazon...

Brand: Vikye   |   Manufacturer: Vikye

Item Dimensions: 0.59 x 3.15 x 3.94 inches (1.5 x 8.0 x 10.0 cm)   |   Package Dimensions: 0.59 x 2.83 x 4.41 inches (1.5 x 7.2 x 11.2 cm)

Amazon Price: $17.99 | as of 09/21/2019(3:34am pst)
Availibility: Usually ships in 24 hours
List Price: $17.99

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  #3

High Power 100A 1600V Three Phase Diode Bridge Rectifier MDS100A Black Three-Phase Diode Bridge Rectifier

 Ean: 0798382577837   |    PartNumber: 2.01906E+12   |   Asin: B07GZR8JC7

Features:
High quality bridge rectifiers used for conversion of an alternating current input into a direct current output.
Well welded structure with good temperature and power cycle ability ensures a more stable performance. Designed for three phase rectification, maximum average forward rectified current is 100A.
It has a large over-current capacity, good heat dissipation and low voltage drop. This high power bridge rectifier can be widely used for power supply.

Specifications:
Material: Metal, plastic
Model: MDS100A
Maximum Average Forward Rectified Current: 100A
Peak Voltage: 1600V
Phase: 3-phase
Pin: 5
Size: 8*4*3cm/3.1*1.6*1.2in
Hole Diameter: 0.6cm/0.2in
Quantity: 1
Weight: 132g(approx.)

Package Includes:
1 x Bridge Rectifier

Features

  • HIGH QUALITY High quality bridge rectifiers used for conversion of an alternating current input into a direct current output
  • STABLE PERFORMANCE Well welded structure with good temperature and power cycle ability ensures a more stable performance
  • DESIGNED FOR Designed for three phase rectification, maximum average forward rectified current is 100A
  • ADVANTAGE It has a large over-current capacity, good heat dissipation and low voltage drop
  • WIDELY USED This high power bridge rectifier can be widely used for power supply
  • See more on Amazon...

Brand: Hilitand   |   Manufacturer: Hilitand

Package Dimensions: 2.48 x 3.9 x 4.33 inches (6.3 x 9.9 x 11.0 cm)

Amazon Price: $13.99 | as of 09/21/2019(3:34am pst)
Availibility: Usually ships in 1-2 business days
List Price: $13.99

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  #4

12V 8-Channel Bluetooth Relay Module Remote Control Switch Board for Android

 Ean: 0663862855531   |    PartNumber: Walfrontz6gx4har1c   |   Asin: B079Z581NH

Specifications:

Operating Voltage: DC 12V

Size: 9.5*6.8*1.8cm/3.7*2.6*0.7in



Glossary:

NO: Relay normally open contact

COM: Relay common contact

NC: Relay normally closed contact

Momentary : Mobile terminal input "A0" (B0 / C0 / D0 is the same), the relay is "open",and after delay of 1 second the relay is "Close".

Self-locking : Mobile terminal input "A1", the relay is "Open", input "A1", the relay is "Close", and so on

Interlock : Mobile terminal input "A2", relay 1 is "Open", the other relay is "Close"; input "B2", relay 2 is "Open", the other relay is "Close", and so on.

Open : NO connection COM, NC disconnect COM

Close : NO disconnect COM, NC connection COM

CommandS(Format: character, case-insensitive)

CommandS

Package Includes:

1 x Relay Module

Features

  • This is a great DC12V Bluetooth remote control relay switch normally used for smart home lighting, fan or motor
  • Standby current (all relays closed) 15MA, 1 relay open 41MA, 2 relays open 69MA, 3 relays open 96MA, 4 relays open 123MA,5 relays open 150MA,6 relays open 177MA, 7 relays open 203MA,8 relays open 229MA
  • Send commands via Android Bluetooth APP control relay turned on and off (we provide Bluetooth APP, you can also use your own APP to control relays, sending commands to control)
  • Momentary,Self-locking, Interlock, open, close 5 Commands
  • You can modify the Bluetooth name and PIN(Access Password)through AT commands
  • See more on Amazon...

Brand: Walfront   |   Manufacturer: Walfront

Package Dimensions: 0.79 x 2.76 x 4.13 inches (2.0 x 7.0 x 10.5 cm)

Amazon Price: $32.49 | as of 09/21/2019(3:34am pst)
Availibility: Usually ships in 24 hours
List Price: $32.49

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  #5

Current Sensing Switch, Normally Open Current Sensing Switch Adjustable AC 0.2-30A SZC23-NO-AL-CH

 Ean: 0724942218735   |    PartNumber: Wal front8y7cbug59d   |   Asin: B07P87TG8F

SZC23 series AC current sensing switch is designed and manufactured to solve the AC current monitoring. It uses the principle of mutual inductance to sense the AC straight-through current, isolate the AC current, and output a normally open or normally closed switching signal to directly control various automation industrial equipment, such as flash, buzzer, relay, single-chip or other power load equipment. Compared with traditional mutual inductors, thermal protectors and other devices, using this device can not only get more accurate and more timely control, but can also greatly simplify the design and reduce costs.


Specification:
Model: SZC23-NO-AL-CH
Power supply: Not required
Rated load: 0.5A@240V AC/DC
Input current: 0.2-30A AC
Switch on minimum: 0.5 0.2A
Maximum overload: 100%
Leakage current: 0.1A
Accuracy: 1%
Hysteresis: 1%
Response time: 200ms
Repeatability: 100%
Working temperature: -20~60
Waterproof: IP30
Dimensions: 65 25 47mm / 2.56 0.98 1.85in
Hole diameter: 10mm / 0.4in
Package weight: Approx. 56g/2.0oz


Package list:
1 Current Sensing Switch


Note:
1. Due to the difference between monitors and light effects, the pictures may not reflect the actual color of the item.
2. Please allow slight error due to manual measurement. Thanks for your understanding.

Features

  • Self-powered, no external power supply required.Action current 0.2-30A AC, adjustable with a potentiometer.
  • LED indicator can conveniently and intuitively indicate the working status of the switch.Hysteresis is less than 1% and can be used under strong magnetic conditions.
  • The switch has no limit on the number of opening and closing, and the reaction speed reaches the ms level.The outer casing is made of self-extinguishing material ABS.
  • High-power MOS tube contactless electronic switch.Straight-through structure design, isolation withstand voltage up to 2000V.
  • Suitable for AC current measurement and monitoring, AC motor overload protection, electronic switch of automatic control system and so on.
  • See more on Amazon...

Brand: Wal front   |   Manufacturer: Wal front

Item Dimensions: 0.98 x 1.97 x 2.56 inches (2.5 x 5.0 x 6.5 cm)   |   Package Dimensions: 1.4 x 2.7 x 3.3 inches (3.6 x 6.9 x 8.4 cm)

Amazon Price: $16.99 | as of 09/21/2019(3:34am pst)
Availibility:
List Price: $16.59

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  #6

KLIXON 3CR-208-157 3CR SERIES MOTOR STARTING RELAYS CURRENT TYPE GRAVITY DEPENDENT

 Ean: 0099461094543   |    PartNumber: 3CR-208-157   |   Asin: B0753MBYK8

3CR SERIES MOTOR STARTING RELAY CURRENT TYPE GRAVITY DEPENDENT,THE KLIXON 3CR SERIES CURRENT-TYPE MOTOR STARTING RELAY IS DESIGNED FOR SINGLE-PHASE AC APPLICATIONS WITH MOTOR START WINDING CURRENTS UP TO 15 AMPS,IT IS APPLICABLE ON BOTH SPLIT-PHASE AND CAPACITOR-START MOTORS, FOR OIL BURNER MOTORS,COMPRESSORS,REFRIGERATOR AND FREEZER,DISHWASHER MOTORS AND OTHER APPLIANCES.,TYPE:2-PIN PLUG-ON 200 SERIES,MAX.PICK-UP:8.80, MIN.DROP-OUT:7.30, CAPACITY:15 AMP,RATING:157, WEIGHT:1.3oz. BULK.

Features

  • THE KLIXON 3CR SERIES CURRENT-TYPE MOTOR STARTING RELAY IS DESIGNED FOR SINGLE-PHASE AC APPLICATIONS WITH MOTOR START WINDING CURRENTS UP TO 15 AMPS
  • APPLICABLE ON BOTH SPLIT-PHASE AND CAPACITOR-START MOTORS, FOR OIL BURNER MOTORS,COMPRESSORS,REFRIGERATOR AND FREEZER,DISHWASHER MOTORS AND OTHER APPLIANCES
  • TYPE:2-PIN PLUG-ON 200 SERIES
  • MAX.PICK-UP:8.80 / MIN.DROP-OUT:7.30
  • CAPACITY:15 AMP / RATING:157
  • See more on Amazon...

Brand: KLIXON   |   Manufacturer: KLIXON

Amazon Price: $13.50 | as of 09/21/2019(3:34am pst)
Availibility: Usually ships in 2-3 business days
List Price: $13.50

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  #7

Siemens SMFH34 Heater Element, Class SMF, 3.46-3.70A Motor Full Load Current

Model: SMFH34   |    Mpn: SMFH34   |    Ean: 0754554259536   |    PartNumber: SMFH34   |   Asin: B0052OGF26

Siemens manufactures electronic products for building automation, industrial drives, lighting, energy generation, medical equipment, and rail transportation. The company, founded in 1847 and headquartered in Germany, meets International Standards Organization (ISO) standards 14001, 9001 and TS 16949.

Features

  • Class SMF heater element
  • 3.46-3.70 amps full load
  • Rated at 104 degrees F ambient temperature
  • See more on Amazon...

Brand: SIEMENS   |   Manufacturer: Siemens

Item Dimensions: 18 x 16 x 23 inches (45.7 x 40.6 x 58.4 cm)   |   Package Dimensions: 0.8 x 1.1 x 2.4 inches (2.0 x 2.8 x 6.1 cm)

Amazon Price: $11.49 | as of 09/21/2019(3:34am pst)
Availibility: Usually ships in 1 to 3 months
List Price: $20.98

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  #8

Siemens SMFH22 Heater Element, Class SMF, 1.30-1.39A Motor Full Load Current

Model: SMFH22   |    Mpn: SMFH22   |    Ean: 0754554259406   |    PartNumber: SMFH22   |   Asin: B0052OGOX6

Siemens manufactures electronic products for building automation, industrial drives, lighting, energy generation, medical equipment, and rail transportation. The company, founded in 1847 and headquartered in Germany, meets International Standards Organization (ISO) standards 14001, 9001 and TS 16949.

Features

  • Class SMF heater element
  • 1.30-1.39 amps full load
  • Rated at 104 degrees F ambient temperature
  • See more on Amazon...

Brand: SIEMENS   |   Manufacturer: Siemens

Item Dimensions: 0.7 x 1.1 x 2.4 inches (1.8 x 2.8 x 6.1 cm)   |   Package Dimensions: 0.7 x 1.1 x 2.4 inches (1.8 x 2.8 x 6.1 cm)

Amazon Price: $26.12 | as of 09/21/2019(3:34am pst)
Availibility: Usually ships in 1 to 3 months
List Price: $31.69

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  #9

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

 Ean: 0663862563719   |    PartNumber: 9687283011   |   Asin: B078JQ4Q6Q

Features:

DPA51CM44 3-Phase monitoring relay features strong anti-interference performance. Compact size and convenient for installation. Maintain constant and efficient work of the motor. Widely used in motor protection, elevator, air conditioning system, power system and other industries. 3-phase monitoring relay for phase sequence and phase loss. Detects when all phases are present and have the correct sequence.

Specifications:

Model: DPA51CM44

Contact load: 5A/ 250VAC; 5 A / 24 VDC

Rated current: 5A

Rated voltage: 208-480VAC

Protective features: IP20

3C rated voltage range: below 36V

Measuring range: 208-480VAC

Contact switching voltage: 250V

Contact switching current: 5A

Output: 1*SPDT relay

Maximum load capacity: 5A/250VAC, 5 A / 24 VDC

Electrical life: > 100,000 times

Size: 8.1 x 6.7 x 1.75cm/3.1 x 2.6 x 0.6inch



Package Included:

1 x 3-Phase Monitoring Relay





Features

  • 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
  • See more on Amazon...

Brand: Walfront   |   Manufacturer: Walfront

Package Dimensions: 0.8 x 2.8 x 3.4 inches (2.0 x 7.1 x 8.6 cm)

Amazon Price: $30.19 | as of 09/21/2019(3:34am pst)
Availibility: Usually ships in 24 hours
List Price: $30.19

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  #10

AD22B04 12V 4 Channel DTMF Tone Signal Decoder Relay Phone Remote Control PLC

 Ean: 0663862852233   |    PartNumber: Walfront3t8fogp6w7   |   Asin: B079Z6KWFD

Specifications:

Size: as the picture

Weight: 72g

Maximum load: 10A/250VAC ,10A/125VAC,10A /30VDC, 10A /28VDC ,10A /12VDC



Package Included:

1 x 4 Channel DTMF Tone Signal Decoder Relay

1 x cable

Features

  • Product model: AD22B04
  • Working voltage DC 12V, with reverse polarity protection
  • Operating Current: Standby 11-13 MA, 1 relay
  • Eight modes of operation: Non-locking (Momentary ), self-locking (Toggle), inter-locking(Latch), 5/20/60/120/250-second delay
  • The default control command is 1/2/3/4
  • See more on Amazon...

Brand: Walfront   |   Manufacturer: Walfront

Item Dimensions: 0.59 x 3.15 x 3.94 inches (1.5 x 8.0 x 10.0 cm)   |   Package Dimensions: 0.79 x 2.2 x 4.09 inches (2.0 x 5.6 x 10.4 cm)

Amazon Price: $25.99 | as of 09/21/2019(3:34am pst)
Availibility: Usually ships in 24 hours
List Price: $25.99

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  #11

Black Single-Phase Diode Bridge Rectifier Module 150A Amp High Power 1600V 4 Terminals

 Ean: 0763741189082   |    PartNumber: ASJ24265NEW   |   Asin: B07DKZ2S1M

Features:

High quality bridge rectifiers used for conversion of an alternating current input into a direct current output.

Well welded structure with good temperature and power cycle ability ensures a more stable performance. Designed for single phase rectification, output DC current is 150A. It has a large over-current capacity, good heat dissipation and low voltage drop. This high power bridge rectifier can be widely used for power supply.

Specifications:

Output Current: 150A

Three Phase Input Positive Average Current: 50A



Repetitive Peak Reverse Voltage(VRRM): 1600V

Repetitive Peak Inverse Current(IRRM): 10mA

Isolation Voltage(Viso): 2500VAC

VTM: 1.5V

ITM: 150A

Phase: Single Phase

Terminals: 4

Max. Junction Temperature: 150

Size: 78 x 40 x 35mm / 3.07 x 1.57 x 1.37"

Quantity: 1



Package Includes:

1 x Bridge Rectifier

Features

  • GREAT PERFORMANCE: It has a large over-current capacity, good heat dissipation and low voltage drop.
  • WELL WELDED: Well welded structure with good temperature and power cycle ability ensures a more stable performance.
  • FOR SINGLE PHRASE RECTIFICATION: Designed for single phase rectification, output DC current is 150A.
  • WIDELY USED: This high power bridge rectifier can be widely used for power supply, widely used.
  • See more on Amazon...

Brand: Hilitand   |   Manufacturer: Hilitand

Package Dimensions: 1.5 x 1.89 x 3.31 inches (3.8 x 4.8 x 8.4 cm)

Amazon Price: $14.49 | as of 09/21/2019(3:34am pst)
Availibility: Usually ships in 1-2 business days
List Price: $14.49

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  #12

Veris Industries H-735 Current Switch Command Relay, 50/60 Hz

Model: H-735   |    Mpn: H-735   |    PartNumber: H-735   |   Asin: B008HOY23M

The Hawkeye relay combination Series is the ideal solution for the automation installer. These units combine a current switch and relay into a single package, reducing the space required for total control of fans and pumps. The current switch and relay operate independently of one another. These devices allow start/stop control and status monitoring with one device instead of two. made in United States. Manufactured by Vermis Industries.

Features

  • Starting/stopping and monitoring positive status of motors
  • Reduces number of components installed - fits better in small starter enclosures
  • Detect belt loss and motor failure..ideal for fan and pump status
  • See more on Amazon...

Brand: Veris Industries   |   Manufacturer: Veris Industries

Package Dimensions: 1.54 x 3.58 x 5.98 inches (3.9 x 9.1 x 15.2 cm)

First Available: 2017-06-14

Amazon Price: $44.61 | as of 09/21/2019(3:34am pst)
Availibility: Usually ships in 4-5 business days
List Price: $44.61 | Used Price: $19.00

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  #13

Siemens SMFH29 Heater Element, Class SMF, 2.16-2.38A Motor Full Load Current

Model: SMFH29   |    Mpn: SMFH29   |    Ean: 0754554259482   |    PartNumber: SMFH29   |   Asin: B0052OGLOI

Siemens manufactures electronic products for building automation, industrial drives, lighting, energy generation, medical equipment, and rail transportation. The company, founded in 1847 and headquartered in Germany, meets International Standards Organization (ISO) standards 14001, 9001 and TS 16949.

Features

  • Class SMF heater element
  • 2.16-2.38 amps full load
  • Rated at 104 degrees F ambient temperature
  • See more on Amazon...

Brand: SIEMENS   |   Manufacturer: Siemens

Item Dimensions: 18 x 16 x 23 inches (45.7 x 40.6 x 58.4 cm)   |   Package Dimensions: 0.8 x 1.2 x 2.5 inches (2.0 x 3.0 x 6.4 cm)

Amazon Price: $14.94 | as of 09/21/2019(3:34am pst)
Availibility: Usually ships in 1 to 3 months
List Price: $18.31

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  #14

CR Magnetics CR2RL-500 Current Transformer, Commercial Class, 5 Amp, 50:5 Secondary Ratio, UL Recognized, 3% Accuracy at 60 Hz, 1.13" Window Diameter

Model: CR2RL-500   |    Mpn: CR2RL-500   |    PartNumber: CR2RL-500   |   Asin: B005CWHXO2

Current Transformer.

Features

  • 5 Amp Secondary Standard / Custom Outputs Available
  • Frequency Range 50 - 400 Hz
  • 24 UL 1015 #16 AWG 24 Wire Leads
  • Core Secured with Epoxy Resin
  • Made in the USA
  • See more on Amazon...

Brand: CR Magnetics   |   Manufacturer: CR Magnetics Inc

Package Dimensions: 1.93 x 3.07 x 3.66 inches (4.9 x 7.8 x 9.3 cm)

Amazon Price: $15.94 | as of 09/21/2019(3:34am pst)
Availibility: Usually ships in 24 hours
List Price: $27.24

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  #15

CR Magnetics CR7310-LH-120-.11-X-CD-ELR-I Ground Fault Sensor Relay with Internal Transformer, 120 VAC, Latch on High Trip, 0.1 to 1.0 AAC Trip Range

 PartNumber: CR7310-LH-120-.11-X-CD-ELR-I   |   Asin: B005CX2ICI

This CR Magnetics ground fault sensing relay has an internal transformer, requires a supply voltage of 120VAC, and is used for monitoring ground faults in power supply applications. This current sensing relay has a window for routing the current-carrying wire and a calibrated dial for setting the trip point. An adjustable delay-on timer provides stability. When current levels rise above the adjusted set point, the relay is tripped and starts the timer. Once the timer cycles, the relay is energized and turns the output to full on. The relay remains tripped (latched) until supply power is removed. It has an internal transformer for scaling the current up or down and a voltage reference circuit that provides a repeatable trip point. This ground fault sensing relay has an LED indicator that alerts the user when the relay is tripped and is suitable for monitoring motor ground faults, sensing early failure of heater elements, and protecting equipment.

Specifications Contact form 1 Form C (SPDT) Contact material Silver-cadmium oxide Supply voltage 120VAC Power-on delay 100 ms. maximum Input supply power 80 mA normal; 100 mA maximum Rated output 20 amps maximum Maximum sensed current Continuous 200% full scale Hysteresis 5% maximum Mechanical life 10 million operations at normal rated load Electrical life 100,000 operations at normal rated load Initial contact resistance 50 milliohms maximum at 500 mA, 12VDC Frequency (at 60 Hz) 50 to 400 Hz Operating temperature -30 to +70 degrees C Storage temperature -55 to +85 degrees C Terminals 3 1/4" male QC Weight 0.05 lb. Standards met UL (Underwriter's Laboratories)
RoHS (Restriction on Hazardous Substances)
CSA (Canadian Standards Association)
Relay switches (also called an electrical relay or an electrical relay switch) use a small amount of power to control a larger source of power connected to electrical devices such as car motors, computers, and lighting installations. A basic relay switch has a control circuit with an electromagnetic coil and a load circuit with contacts and a lever. When current flows into the relay switch, it moves through the coil and a magnetic field is created, which causes the lever in the load circuit to move between contacts, either turning the device on or off. In a normally open (NO) relay switch, when power is supplied to the relay, the load circuit is closed and the power source connected to the relay is turned on. In a normally closed (NC) relay switch, when power is supplied to the relay, the load circuit is open and the power source connected to the relay is turned off. In other types of relay switches, non-moving parts such as transistors or semiconductors can be used as the control circuit to operate the switching mechanism. Relay switches can be controlled with an external switch, such as a light switch, or they can be connected to an automatically switched power source, such as a car ignition. One relay can operate multiple switches, and multiple relays can be operated with a single switch, with each relay operating independently from the other relays in the system.

CR Magnetics manufactures electrical sensors, indicators, and displays. The company, founded in 2004, is headquartered in Saint Louis, MO.

Features

  • Electric relay for sensing ground faults
  • 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, CSA certified for quality assurance, and RoHS compliant for hazardous substances
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Brand: CR Magnetics   |   Manufacturer: CR Magnetics

Package Dimensions: 2.6 x 2.7 x 4.2 inches (6.6 x 6.9 x 10.7 cm)

Amazon Price: $143.03 | as of 09/21/2019(3:34am pst)
Availibility:
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  #16

CR Magnetics CR2RL-201 Current Transformer, Commercial Class, 5 Amp, 200:5 Secondary Ratio, UL Recognized, 1% Accuracy at 60 Hz, 1.13" Window Diameter

Model: CR2RL-201   |    Mpn: CR2RL-201   |    PartNumber: CR2RL-201   |   Asin: B005CWHSA6

Current Transformer.

Features

  • 5 Amp Secondary Standard / Custom Outputs Available
  • Frequency Range 50 - 400 Hz
  • 24 UL 1015 #16 AWG 24 Wire Leads
  • Core Secured with Epoxy Resin
  • Made in the USA
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Brand: CR Magnetics   |   Manufacturer: CR Magnetics Inc

Package Dimensions: 2.1 x 3.1 x 3.3 inches (5.3 x 7.9 x 8.4 cm)

First Available: 2017-11-25

Amazon Price: $15.94 | as of 09/21/2019(3:34am pst)
Availibility: Usually ships in 24 hours
List Price: $20.14

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  #17

Electronics-Salon Panel Mount +/-100Amp AC/DC Current Sensor Module Board, based on ACS758

 Ean: 6921407352162   |    PartNumber: MD-D1085/100A-1   |   Asin: B016M5UCFO

Current Sensor Module Board, +/-100 Amp, Panel Mount Version.

Features
The item of current sensor module provides economical and precise solutions for AC or DC current sensing. Typical applications include motor control, load detection and management, power supply and DC-to-DC converter control, inverter control, and overcurrent fault detection.
Output voltage proportional to AC or DC currents.
FR-4 fiber glass PCB, dual copper layers.
100% new, never used.

Electrical Parameters:
Load Maximum Current: 100A.
Load Frequency Bandwidth: DC ~ 120 kHz.
Isolation Voltage: 4800V AC.
Sensitivity: 20mV/A.
Operating Voltage: Regulated 5VDC, or 8 ~ 35VDC.
Operating Current: 20mA(max).

Specification:
http://audiowind.oss-cn-hongkong.aliyuncs.com/new-pdf/D-1085.pdf


Features

  • Current Sensor Module Board, +/-100 Amp, Panel Mount Version.
  • FR-4 fiber glass PCB, dual copper layers.
  • Operating Voltage: Regulated 5VDC, or 8 ~ 35VDC.
  • Operating Current: 20mA(max).
  • 100% new, never used.
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Brand: CZH-LABS   |   Manufacturer: Electronics-Salon

Package Dimensions: 1.3 x 2.2 x 3.7 inches (3.3 x 5.6 x 9.4 cm)

Amazon Price: $17.99 | as of 09/21/2019(3:34am pst)
Availibility: Usually ships in 24 hours
List Price: $20.99

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  #18

Voltage Monitoring Relay, GRV8-04 3-Phase Voltage Monitoring Relay Phase Sequence Phase Failure Protection M265

 Ean: 0712979289019   |    PartNumber: Vikyeme4g3pg518   |   Asin: B07SL4JYT2

Features:
1. This relay can monitor own working voltage (true RMS measurement).
2. 8 kinds of adjustable rated voltage.
3. Voltage measurement accuracy is not more than 1%.
4. Relay working status is indicated by LED indicators.
5. With super small volume, this relay can be mounted on 35mm DIN rail.
6. Application: Equipment protection and control(tower crane, elevator, agriculture equipment, refrigerated trucks); Protect equipment from reverse running; Normal/emergency power supply switch; Protect against phase failure of a dynamic load.

Specification:
Function: Monitor L-N voltage (3-phase 4-wire system)
Monitoring terminal: L1-L2-L3-N
Power: L1-N
Rated working voltage: 127-132-138-220-230-240-254-265 (P-N)
Rated power frequency: 45Hz-65Hz
Measuring range: 101V-318V
Voltage threshold range: 2%-20% (rated voltage)
Voltage fixed lag rate: 2%
Voltage measurement error: 1%
Power-on delay time: 0.5s
Knob setting accuracy: 10%
Reset time: 1s
Temperature fluctuation error: 0.05%/ C, at=20 C
Output: 1 x SPDT; 10A/ AC1; 250VAC/24VDC
Minimum switching power: 500mW
Overvoltage: 2%-20%
Undervoltage: -20%-2%
Action delay time: 0.1-10s adjustable
Phase sequence protection: Yes
Phase failure protection: Yes
Power indicator: Green LED
Output relay indication: Red LED
Mechanical life: 1x107
Mounting method: 35mm DIN rail mounting
Mount altitude: 2000m
Weight: Approx. 76g/2.7oz

Package list:
1 * Voltage Monitoring Relay


Features

  • This relay can monitor own working voltage (true RMS measurement).
  • 8 kinds of adjustable rated voltage.
  • Voltage measurement accuracy is not more than 1%.
  • Relay working status is indicated by LED indicators.
  • With super small volume, this relay can be mounted on 35mm DIN rail.
  • See more on Amazon...

Brand: Vikye   |   Manufacturer: Vikye

Item Dimensions: 2.76 x 1.18 x 3.94 inches (7.0 x 3.0 x 10.0 cm)   |   Package Dimensions: 0.98 x 2.95 x 3.74 inches (2.5 x 7.5 x 9.5 cm)

Amazon Price: $30.29 | as of 09/21/2019(3:34am pst)
Availibility: Usually ships in 24 hours
List Price: $30.29

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  #19

Power Assemblies PowerTEK NEMA Assemblies Extension, UL Listed/CSA Certified, 15A 125VAC, 12/3 Gauge, Type SJOOW-A Cable, NEMA 5-15, 40' Length, Portable Power Cords and control cable

 Ean: 0655676597981   |    PartNumber: 5153PC040   |   Asin: B07BJ9L5FR

Power Assemblies' PowerTEK Entertainment Extensions are designed and engineered to deliver maximum performance in the harshest environments. NEMA cable assemblies offer a wide array of single and multi-pole devices from manufacturers such as Hubbell, Marinco, Cooper/Crouse-Hinds, and Leviton. Our PowerTEK assemblies are designed to facilitate safety, performance, and ease of installation within a complete power distribution network. Common applications are theater, entertainment equipment rental, studio lighting, stage productions and industrial. NEMA Assemblies are available in waterproof and non-waterproof and type SOOW-A Cable and type SJOOW-A Cable. UL Listed (indoor and outdoor), CSA Certified and MSHA Approved.

Available Lengths: 5', 10', 15', 20', 25', 30', 40', 50', 75', 90', 100' (length varies per model)

Available Gauges: 12/3, 12/4, 12/5, 10/5 (varies per model)

Available cable types: SOOW-A Cable and SJOOW-A Cable

Available Amps: 15A, 20A and 30A (varies per model)

Available Volts: 125VAC, 250VAC, 125/250VAC, 120/208VAC (varies per model)

Available NEMA Configuration: 5-15, L5-20, L21-20, L6-20, L21-30 and L14-20 (varies per model)

Features

  • Resist exposure to industrial abrasion, wear and tear, and harsh conditions such as water, sunlight, and oil
  • Designed for long-lasting performance
  • MSHA Approved as thermoset rubber does not deform after exposure to flames
  • Tough nylon bodies of plugs and connectors resist damage from severe impact
  • UL Listing (indoor and outdoor) and CSA certified on all SOOW products
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Brand: Power Assemblies   |   Manufacturer: Power Assemblies

Amazon Price: $63.85 | as of 09/21/2019(3:34am pst)
Availibility: Usually ships in 2-3 business days
List Price: $63.85

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