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Best Current Sensors - Buying Guide

Last Updated: 08/25/2019

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Bestselling Current Sensors on Amazon

  1. FTCBlock 3pcs ACS712 Current Sensor 30A Range Analogue AC/DC for Arduino Ras PI
  2. FTCBlock 3pcs ACS712 Current Sensor 5A Range Analogue AC/DC for Arduino Ras PI
  3. Current Transformer, DROK 100A 100mA AC Current Sensor, Split Core Amp Transformer Sensing Relay, Mi...
  4. FTCBlock 3pcs Current Sensor ACS712 20A Range Analogue AC/DC for Arduino Ras PI
  5. SCT-013-000 Non-invasive AC Current Sensor Split Core Transformer 100A
  6. Suncourt SW100 Current Switch
  7. CR Magnetics CR2550-R Low Cost Remote Current Indicator with Red LED, 0.75 AAC Turn-On Point
  8. INA219 High Side DC Current Sensor Breakout - 26V 3.2A Max
  9. CR Magnetics CR2550-W Low Cost Remote Current Indicator with White LED, 0.75 AAC Turn-On Point
  10. Electronics-Salon Panel Mount +/-50Amp AC/DC Current Sensor Module Board, based on ACS758

  #1

FTCBlock 3pcs ACS712 Current Sensor 30A Range Analogue AC/DC for Arduino Ras PI

 Ean: 0729043078646   |    PartNumber: ACS712   |   Asin: B079P4LVPV

Description:

The Current Sensor ACS712 provides economical and precise solutions for AC or DC current sensing in industrial, commercial, and communications systems.

Typical applications include motor control, load detection and management, switched-mode power supplies, and overcurrent fault protection.



Features:

Total output error 1.5% at TA = 25 C

Sensor IC Allegro ACS712ELC-xxB-T

Internal conductor resistance 1.2 m

Power operation 5V

Temperature -40 C to 85 C

Output Signal Analog



Package Included:

3 x AC/DC Current Sensor (30A)

Features

  • Current sensor chip: ACS712ELC-30A
  • Pin 5V power supply, on-board power indicator
  • The module can measure the positive and negative 20 amps, corresponding to the analog output 100mV / A
  • There is no the detection current through, the output voltage is VCC / 2
  • The PCB board size: 31 (mm) x13 (mm)
  • See more on Amazon...

Brand: FTCBlock   |   Manufacturer: Southern Tech

Package Dimensions: 1.2 x 2.7 x 3.8 inches (3.0 x 6.9 x 9.7 cm)

Amazon Price: $9.99 | as of 08/25/2019(5:58am pst)
Availibility: Usually ships in 24 hours
List Price: $9.99

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  #2

FTCBlock 3pcs ACS712 Current Sensor 5A Range Analogue AC/DC for Arduino Ras PI

 Ean: 0729043078417   |    PartNumber: ACS712   |   Asin: B079P2D6NN

" Description:

The Current Sensor ACS712 provides economical and precise solutions for AC or DC current sensing in industrial, commercial, and communications systems.

Typical applications include motor control, load detection and management, switched-mode power supplies, and overcurrent fault protection.



Features:

Total output error 1.5% at TA = 25 C

Sensor IC Allegro ACS712ELC-xxB-T

Internal conductor resistance 1.2 m

Power operation 5V

Temperature -40 C to 85 C

Output Signal Analog



Package Included:

3 x AC/DC Current Sensor (5A)

"

Features

  • Current sensor chip: ACS712ELC-5A
  • Pin 5V power supply, on-board power indicator
  • The module can measure the positive and negative 20 amps, corresponding to the analog output 100mV / A
  • The PCB board size: 31 (mm) x13 (mm)
  • There is no the detection current through, the output voltage is VCC / 2
  • See more on Amazon...

Brand: FTCBlock   |   Manufacturer: Southern Tech

Package Dimensions: 0.6 x 4 x 6.6 inches (1.5 x 10.2 x 16.8 cm)

Amazon Price: $9.99 | as of 08/25/2019(5:58am pst)
Availibility: Usually ships in 24 hours
List Price: $9.99

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  #3

Current Transformer, DROK 100A 100mA AC Current Sensor, Split Core Amp Transformer Sensing Relay, Mini Clip-on Easy to Install CT Without Power Off

Model: 200072   |    Mpn: 200072   |    PartNumber: 200072   |   Asin: B01LWN37KS

Parameters: Environment temperature: -40 ~+85 Relative humidity: never more than 90% when the temperature is 40 Working frequency: 50Hz~60Hz Insulation endurance grade: B grade (130 ) Insulation resistance: more than 1000M normally Dielectric strength: can afford power frequency 1000V/1minute Flame resistance: Conform to UL94-Vo grade Internal resistance: 42 Test linear range: 0-100A 10A secondary output: 10MA 50A secondary output: 50MA 100A secondary output: 100MA Ratio is 1000: 1 Range of Application: 1. The current transformer is used for energy meter in special; AC 220v, the 380v power supply can both be applied. 2. When you fix the energy meter, you don't need to cut off the power if you use this product. Precautions: 1. The CT primary should be connected in series with the test current loop, the secondary should be as work in the short-circuit state 2. The secondary circuit is not allowed open circuit, so please do not install a fuse. Package Including: 1x Current Transformer

Features

  • This is a mini split base current transformer; it's the smallest one compared to the similar products (output 100MA).
  • The diameter of inner hole is 16mm, the accuracy is 0.5 grade,
  • Our ac sensing relay using snap joint structure, it can be fixed to the cable directly through nylon ties.
  • The amp transformer is with Built-in input coil; small and light, easy to install.
  • Fully enclosed CT, good mechanical properties and environmental resistance, strong voltage isolation capability, safety and reliability.
  • See more on Amazon...

Brand: DROK   |   Manufacturer: DROK

Package Dimensions: 1 x 1 x 4 inches (2.5 x 2.5 x 10.2 cm)

Amazon Price: $12.99 | as of 08/25/2019(5:58am pst)
Availibility: Usually ships in 24 hours
List Price: $12.99

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  #4

FTCBlock 3pcs Current Sensor ACS712 20A Range Analogue AC/DC for Arduino Ras PI

 Ean: 0729043078639   |    PartNumber: ACS712   |   Asin: B079P7HLYK

" Description:

The Current Sensor ACS712 provides economical and precise solutions for AC or DC current sensing in industrial, commercial, and communications systems.

Typical applications include motor control, load detection and management, switched-mode power supplies, and overcurrent fault protection.



Features:

Total output error 1.5% at TA = 25 C

Sensor IC Allegro ACS712ELC-xxB-T

Internal conductor resistance 1.2 m

Power operation 5V

Temperature -40 C to 85 C

Output Signal Analog



Package Included:

3 x AC/DC Current Sensor (20A)

"

Features

  • Current sensor chip: ACS712ELC-20A
  • Pin 5V power supply, on-board power indicator
  • The module can measure the positive and negative 20 amps, corresponding to the analog output 100mV / A
  • There is no the detection current through, the output voltage is VCC / 2
  • The PCB board size: 31 (mm) x13 (mm)
  • See more on Amazon...

Brand: FTCBlock   |   Manufacturer: Southern Tech

Package Dimensions: 1.2 x 2.6 x 3.8 inches (3.0 x 6.6 x 9.7 cm)

Amazon Price: $9.99 | as of 08/25/2019(5:58am pst)
Availibility: Usually ships in 24 hours
List Price: $9.99

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  #5

SCT-013-000 Non-invasive AC Current Sensor Split Core Transformer 100A

 Ean: 0666354855453   |    PartNumber: 1   |   Asin: B07FZZZ62L


Specification:
Model: SCT-013-000
Type: Non-invasive current transformer
Core Material: Ferrite
Input Current: 0~100A AC
Output Mode: 0~50mA
Leading Wire in Length: 1m
Turns Ratio: 1: 1800
Work Voltage: 660 v
Resistance Grade: Grade B
Max Sampling Resistance: 10
Linearity: 3%
Accurancy: 1%
Work Frequency: 50-1 KHz
Work Temperature: -25 C ~ 70 C
Reference project: Open Energy Monitor
Dielectric Strength: 6000V AC/1min
Opening Size: 0.51 * 0.51inch / 13 x 13mm
Two Form of Output: current output or voltage output (a burden resistor needed to add);
Mechanical strength: opening and closing times, no less than 1000 times (20 )
High Quality and Safe: Meet the requirement of flame-retardant characteristics (UL94-V0)
Applications:
For AC motors, lighting equipment, air compressors and other current measurement,monitoring and protection.

Package include:
2 PCS Split Core Current Transformer SCT-013-000

100% Satisfaction Guarantee:
12-Month Warranty; No satisfied ,Free reason for return; We could also resend you new one due to quality problem.

Features

  • Operating Temperature: -25 C ~ +70 C
  • 1.5m leading wire, 3.5 3 core plug standard output
  • Opening size: 13mm * 13mm, Non-linearity 3%(10%-120% rated input current)
  • Two form of output current, voltage (voltage output built-in the sampling resistor)
  • Fits for AC motors, lighting equipment, air compressors and other current measurements, monitoring and protection
  • See more on Amazon...

Brand: CTYRZCH   |   Manufacturer: CTYRZCH

Package Dimensions: 1 x 4.5 x 5.4 inches (2.5 x 11.4 x 13.7 cm)

Amazon Price: $16.94 | as of 08/25/2019(5:58am pst)
Availibility: Usually ships in 24 hours
List Price: $16.94

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  #6

Suncourt SW100 Current Switch

Model: SW100   |    Mpn: SW100   |    Ean: 0080956958716   |    PartNumber: SW100   |   Asin: B003ZZDLQM

The AC Current Switch (SW100) can be used to switch on and off remote devices with an amp draw up to 2.5 amps, (e.g. a Suncourt Centrax Centrifugal Fan). The AC Current Switch (SW100) will provide power to a remote device when the white (neutral) wire from a triggering device (e.g. a clothes dryer) carrying 1.2 40 amps passes through the center of the AC Current Switch (SW100).

Features

  • Turns 120 VAC devices on when input current is sensed
  • UL 94-V0 rated for flammability safety
  • CSA Listed
  • See more on Amazon...

Brand: Suncourt   |   Manufacturer: Suncourt

Item Dimensions: 0.8 x 2.7 x 3 inches (2.0 x 6.9 x 7.6 cm)   |   Package Dimensions: 1 x 6.4 x 8.8 inches (2.5 x 16.3 x 22.4 cm)

Amazon Price: $25.77 | as of 08/25/2019(5:58am pst)
Availibility: Usually ships in 24 hours
List Price: $25.77

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  #7

CR Magnetics CR2550-R Low Cost Remote Current Indicator with Red LED, 0.75 AAC Turn-On Point

 PartNumber: CR2550-R   |   Asin: B005CWHDVA

This CR Magnetics CR2550 series current indicator combines a current transformer and a two-color LED, and is suitable for use in industrial automation systems. The indicator is self-powered for quick installation, has a thermoplastic housing, and the LED is connected to 11" leads. This current indicator is Underwriters Laboratories (UR) Recognized and Conformit Europ enne (CE) certified for quality assurance, and is suitable for sensing alternating current (AC) loads.

Specifications Frequency Range 50-400 Hz Maximum input current 20 AAC Insulation Voltage 600 VAC Operating Temperature -30 C to 60 C CR Magnetics manufactures electrical sensors, indicators, and displays. The company, founded in 2004, is headquartered in Saint Louis, MO.

Features

  • Two-color LED indicator senses alternating current
  • 11 wire leads for remote indication
  • Self-powered for quick installation
  • Thermoplastic housing
  • See more on Amazon...

Brand: CR Magnetics   |   Manufacturer: CR Magnetics

Package Dimensions: 0.5 x 2.8 x 3.3 inches (1.3 x 7.1 x 8.4 cm)

Amazon Price: $12.65 | as of 08/25/2019(5:58am pst)
Availibility: Usually ships in 24 hours
List Price: $16.76

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  #8

INA219 High Side DC Current Sensor Breakout - 26V 3.2A Max

Model: ina219-FBACA   |    Mpn: 58-1B8R-D1V5   |    Ean: 0720189972614   |    PartNumber: 58-1B8R-D1V5   |   Asin: B00I827TUQ

This breakout board will solve all your power-monitoring problems. Instead of struggling with two multimeters, you can just use the handy INA219B chip on this breakout to both measure both the high side voltage and DC current draw over I2C with 1% precision. Most current-measuring devices such as our current panel meter are only good for low side measuring. That means that unless you want to get a battery involved, you have to stick the measurement resistor between the target ground and true ground. This can cause problems with circuits since electronics tend to not like it when the ground references change and move with varying current draw. This chip is much smarter - it can handle high side current measuring, up to +26VDC, even though it is powered with 3 or 5V. It will also report back that high side voltage, which is great for tracking battery life or solar panels. A precision amplifier measures the voltage across the 0.1 ohm, 1% sense resistor. Since the amplifier maximum input difference is 320mV this means it can measure up to 3.2 Amps. With the internal 12 bit ADC, the resolution at 3.2A range is 0.8mA. With the internal gain set at the minimum of div8, the max current is 400mA and the resolution is 0.1mA. Advanced hackers can remove the 0.1 ohm current sense resistor and replace it with their own to change the range (say a 0.01 ohm to measure up 32 Amps with a resolution of 8mA) We include a 6-pin header (so you can easily attach this sensor to a breadboard) as well as a 3.5mm terminal plug so you can easily attach and detach your load. Usage is simple. Power the sensor itself with 3 to 5VDC and connect the two I2C pins up to your microcontroller. Then connect your target power supply to VIN+ and the load to ground to VIN-. Adafruit has an Arduino library right now that will do all the gain, range and math for you - just plug and go!

Features

  • Requires soldering of header pins (easy!)
  • Measure high side voltage and DC current draw
  • Great for tracking battery life or solar panels
  • Supported by Adafruit Arduino libraries!
  • Perfect for your solar or battery powered Arduino project
  • See more on Amazon...

Brand: Adafruit Industries   |   Manufacturer: Adafruit Industries

Package Dimensions: 0.2 x 2.5 x 3.8 inches (0.5 x 6.4 x 9.7 cm)

Amazon Price: $9.95 | as of 08/25/2019(5:58am pst)
Availibility: Usually ships in 24 hours
List Price: $14.28

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  #9

CR Magnetics CR2550-W Low Cost Remote Current Indicator with White LED, 0.75 AAC Turn-On Point

 PartNumber: CR2550-W   |   Asin: B005CWHEPK

This CR Magnetics CR2550 series current indicator combines a current transformer and a two-color LED, and is suitable for use in industrial automation systems. The indicator is self-powered for quick installation, has a thermoplastic housing, and the LED is connected to 11" leads. This current indicator is Underwriters Laboratories (UR) Recognized and Conformit Europ enne (CE) certified for quality assurance, and is suitable for sensing alternating current (AC) loads.

Specifications Frequency Range 50-400 Hz Maximum input current 20 AAC Insulation Voltage 600 VAC Operating Temperature -30 C to 60 C CR Magnetics manufactures electrical sensors, indicators, and displays. The company, founded in 2004, is headquartered in Saint Louis, MO.

Features

  • Two-color LED indicator senses alternating current
  • 11 wire leads for remote indication
  • Self-powered for quick installation
  • Thermoplastic housing
  • See more on Amazon...

Brand: CR Magnetics   |   Manufacturer: CR Magnetics

Package Dimensions: 0.4 x 3 x 5 inches (1.0 x 7.6 x 12.7 cm)

Amazon Price: $16.90 | as of 08/25/2019(5:58am pst)
Availibility: Usually ships in 1 to 3 months
List Price: $21.18

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  #10

Electronics-Salon Panel Mount +/-50Amp AC/DC Current Sensor Module Board, based on ACS758

 Ean: 6921407352148   |    PartNumber: MD-D1085/50A-1   |   Asin: B016M6IHSM

Current Sensor Module Board, +/-50 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: 50A.
Load Frequency Bandwidth: DC ~ 120 kHz.
Isolation Voltage: 4800V AC.
Sensitivity: 40mV/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, +/-50 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.
  • See more on Amazon...

Brand: CZH-LABS   |   Manufacturer: Electronics-Salon

Package Dimensions: 1.1 x 2.2 x 3.54 inches (2.8 x 5.6 x 9.0 cm)

Amazon Price: $17.99 | as of 08/25/2019(5:58am pst)
Availibility: Usually ships in 1-2 business days
List Price: $17.99

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  #11

Electronics-Salon Panel Mount +/-150Amp AC/DC Current Sensor Module Board, based on ACS758

 Ean: 6921407352155   |    PartNumber: MD-D1085/150A-1   |   Asin: B016M63GTM

Current Sensor Module Board, +/-150 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: 150A.
Load Frequency Bandwidth: DC ~ 120 kHz.
Isolation Voltage: 4800V AC.
Sensitivity: 13.3mV/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, +/-150 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.
  • See more on Amazon...

Brand: CZH-LABS   |   Manufacturer: Electronics-Salon

Package Dimensions: 1.34 x 2.2 x 3.62 inches (3.4 x 5.6 x 9.2 cm)

Amazon Price: $17.99 | as of 08/25/2019(5:58am pst)
Availibility: Usually ships in 24 hours
List Price: $20.99

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  #12

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

 Ean: 6921407476950   |    PartNumber: MD-D1085T/100A-1 .   |   Asin: B017B66W20

Current Sensor Module Board, +/-100 Amp, DIN Rail 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.
High quality PCB housing/carrier, DIN rail mountable - for width 35 / 32 / 15mm rails.
DIN mount case can be taken apart for panel mount use.
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, DIN Rail 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.
  • See more on Amazon...

Brand: CZH-LABS   |   Manufacturer: Electronics-Salon

Package Dimensions: 2.1 x 2.5 x 4 inches (5.3 x 6.4 x 10.2 cm)

Amazon Price: $25.99 | as of 08/25/2019(5:58am pst)
Availibility: Usually ships in 24 hours
List Price: $28.99

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  #13

HAWKEYE INST INC H-904 Current Switch, Split CORE Senses, 3.5-135AMP

Model: H904   |    Mpn: H904   |    Ean: 0643129362552   |    PartNumber: H904   |   Asin: B008HOYPJS

Sensor Power Induced from monitored conductor Insulation Class 600VAC RMS Frequency Range 34 to 75 Hz (belt loss indication); 20 to 34 Hz (on/off status) Temperature Range -15 to 60 C (5 to 140 F) Humidity Range 10 - 90% RH non-condensing Off Delay 0 sec to 2 min. Terminal Block Maximum Wire Size 14 AWG Terminal Block Torque (nominal) 4 in-lbs (0.45 N-m) Agency Approvals UL 508 open device listingDo not use the LED status indicators as evidence of applied voltage.

Features

  • Hawkeye 904 microprocessor-based current status switches provide a unique solution for accurately monitoring status of motors controlled by variable frequency drives
  • The H904 stores the sensed amperage values for normal operation at various frequency ranges in non-volatile memory
  • This information allows the device to distinguish between a reduced amp draw due to normal changes in the frequency and an abnormal amp drop due to belt loss or other mechanical failures
  • APPLICATIONS Monitoring positive status on motors controlled by variable frequency drivesReplacing pressure switchesMicroprocessor-based real labor saver No need to calibrate to detect belt loss on VFDsSelf-adjusting trip point factory programmed to detect belt loss undercurrent conditions
  • Install and go Available with a relay;status and control in one package, saving time and space Bracket can be installed in three different configurations;added flexibilityAccurately detects belt loss and coupling shear on VFD driven motorsMonitors both frequency and amperage;distinguishes normal drops in amperage due to frequency changes from abnormal drops due to mechanical failureSplit-core design is ideal for retrofits; no need to remove conductor5-year limited warranty
  • See more on Amazon...

Brand: Veris   |   Manufacturer: Veris

Item Dimensions: 3 x 1 x 3.8 inches (7.6 x 2.5 x 9.7 cm)   |   Package Dimensions: 5 x 5 x 5 inches (12.7 x 12.7 x 12.7 cm)

Amazon Price: $55.13 | as of 08/25/2019(5:58am pst)
Availibility: Usually ships in 4-5 business days
List Price: $55.13 | Used Price: $30.00

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  #14

Electronics-Salon DIN Rail Mount +/-20Amp AC/DC Current Sensor Module, Based on ACS712

 Ean: 6921407352063   |    PartNumber: 43237-2   |   Asin: B012A1UZ0Q

Current Sensor Module Board, +/-20 Amp, DIN Rail Mount Version.

Features
The item provides economical and precise solutions for AC or DC current sensing in industrial, commercial, and communications systems. Typical applications include motor control, load detection and management, switched-mode power supplies, and overcurrent fault protection. The device is not intended for automotive applications.
Output voltage proportional to AC or DC currents.
High quality PCB housing/carrier, DIN rail mountable - for width 35 / 32 / 15mm rails.
DIN mount case can be taken apart for panel mount use.
FR-4 fiber glass PCB, dual copper layers.
100% new, never used.

Electrical Parameters:
Load Maximum Current: 20A..
Load Frequency Bandwidth: DC ~ 80 kHz.
Minimum Isolation Voltage: 2.1 kV(RMS).
Sensitivity: 100mV/A.
Operating Voltage: Regulated 5VDC, or 8 ~ 35VDC.
Operating Current: 20mA(max).

Specification:
http://www.audiowind.com/pdf/D-1020.pdf


Features

  • Current Sensor Module Board, +/-20 Amp, DIN Rail Mount Version.
  • The item provides economical and precise solutions for AC or DC current sensing in industrial, commercial, and communications systems. Typical applications include motor control, load detection and management, switched-mode power supplies, and overcurrent fault protection. The device is not intended for automotive applications.
  • Output voltage proportional to AC or DC currents.
  • High quality PCB housing/carrier, DIN rail mountable - for width 35 / 32 / 15mm rails.
  • 100% new, never used.
  • See more on Amazon...

Brand: CZH-LABS   |   Manufacturer: Electronics-Salon

Package Dimensions: 2.01 x 2.4 x 4.02 inches (5.1 x 6.1 x 10.2 cm)

Amazon Price: $19.99 | as of 08/25/2019(5:58am pst)
Availibility:
List Price: $22.99

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  #15

Electronics-Salon DIN Rail Mount +/-5Amp AC/DC Current Sensor Module, based on ACS712

 Ean: 6921407352070   |    PartNumber: MD-D1020T/5A-1   |   Asin: B012A1N0PS

Current Sensor Module Board, +/-5 Amp, DIN Rail Mount Version.

Features
The item provides economical and precise solutions for AC or DC current sensing in industrial, commercial, and communications systems. Typical applications include motor control, load detection and management, switched-mode power supplies, and overcurrent fault protection. The device is not intended for automotive applications.
Output voltage proportional to AC or DC currents.
High quality PCB housing/carrier, DIN rail mountable - for width 35 / 32 / 15mm rails.
DIN mount case can be taken apart for panel mount use.
FR-4 fiber glass PCB, dual copper layers.
100% new, never used.

Electrical Parameters:
Load Maximum Current: 5A..
Load Frequency Bandwidth: DC ~ 80 kHz.
Minimum Isolation Voltage: 2.1 kV(RMS).
Sensitivity: 185mV/A.
Operating Voltage: Regulated 5VDC, or 8 ~ 35VDC.
Operating Current: 20mA(max).

Specification:
http://www.audiowind.com/pdf/D-1020.pdf


Features

  • Current Sensor Module Board, +/-5 Amp, DIN Rail Mount Version.
  • The item provides economical and precise solutions for AC or DC current sensing in industrial, commercial, and communications systems. Typical applications include motor control, load detection and management, switched-mode power supplies, and overcurrent fault protection. The device is not intended for automotive applications.
  • Output voltage proportional to AC or DC currents.
  • High quality PCB housing/carrier, DIN rail mountable - for width 35 / 32 / 15mm rails.
  • 100% new, never used.
  • See more on Amazon...

Brand: CZH-LABS   |   Manufacturer: Electronics-Salon

Package Dimensions: 2.1 x 2.5 x 4 inches (5.3 x 6.4 x 10.2 cm)

Amazon Price: $19.99 | as of 08/25/2019(5:58am pst)
Availibility: Usually ships in 1-2 business days
List Price: $19.99

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  #16

Adafruit Accessories INA219 DC Current Sensor Breakout (1 Piece)

Model: FBA_ADA904   |    Mpn: FBA_ADA904   |    Ean: 0711978441824   |    PartNumber: FBA_ADA904   |   Asin: B00SK8M5GG

This breakout board will solve all your power-monitoring problems. Instead of struggling with two multimeters, you can just use the handy INA219B chip on this breakout to both measure both the high side voltage and DC current draw over I2C with 1% precision. Most current-measuring devices such as our current panel meter are only good for low side measuring. That means that unless you want to get a battery involved, you have to stick the measurement resistor between the target ground and true ground. This can cause problems with circuits since electronics tend to not like it when the ground references change and move with varying current draw. This chip is much smarter - it can handle high side current measuring, up to +26VDC, even though it is powered with 3 or 5V. It will also report back that high side voltage, which is great for tracking battery life or solar panels. A precision amplifier measures the voltage across the 0.1 ohm, 1% sense resistor. Since the amplifier maximum input difference is 320mV this means it can measure up to 3.2 Amps. With the internal 12 bit ADC, the resolution at 3.2A range is 0.8mA. With the internal gain set at the minimum of div8, the max current is 400mA and the resolution is 0.1mA. Advanced hackers can remove the 0.1 ohm current sense resistor and replace it with their own to change the range (say a 0.01 ohm to measure up 32 Amps with a resolution of 8mA) We include a 6-pin header (so you can easily attach this sensor to a breadboard) as well as a 3.5mm terminal plug so you can easily attach and detach your load. Usage is simple. Power the sensor itself with 3 to 5VDC and connect the two I2C pins up to your microcontroller. Then connect your target power supply to VIN+ and the load to ground to VIN-. We have an Arduino library right now that will do all the gain, range and math for you - just plug and go! We'll have a more detailed tutorial up shor

Features

  • Adafruit Part Number: 904
  • Stock Type: Breakout Boards >> Batteries/Power
  • In Stock & Ready to Ship
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Brand: Adafruit   |   Manufacturer: Adafruit

Package Dimensions: 0.3 x 2 x 2 inches (0.8 x 5.1 x 5.1 cm)

Amazon Price: $16.26 | as of 08/25/2019(5:58am pst)
Availibility: Usually ships in 1-2 business days
List Price: $16.26

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  #17

Johnson Controls CSD-SF0C0-1 Current Sensing Relay, 0.25A, Self Powered

Model: CSD-SF0C0-1   |    Mpn: CSD-SF0C0-1   |    Ean: 0066201110320   |    PartNumber: CSD-SF0C0-1   |   Asin: B00C85X9I0

The Current Switch Device (CSD) Series of digital output current switches are non-intrusive devices designed to detect current flowing through a cable or wire. A cost-effective solution for monitoring on and off status or proof of operation, these units are ideal for monitoring very small current loads on motors driving fans and blowers, pumps, heating coils, and lighting. The CSD models with command relays not only monitor the current flowing through the cable but also facilitate the start and stopping of the motor. These units also provide a universal solid-state output and do not require a power supply. Completely self-powered, these units draw their power from current induced from the cable or line being monitored.

Features

  • Dual function - monitors current and motor start and stop
  • 100% solid-state output - has no moving parts to fail
  • Polarity insensitive output - provides easier wiring
  • Snap-in mounting bracket - simplifies installation
  • Small size - fits in tight enclosures
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Brand: Johnson Controls   |   Manufacturer: Johnson Controls Inc

Package Dimensions: 1.18 x 5.87 x 6.42 inches (3.0 x 14.9 x 16.3 cm)

First Available: 2017-12-05

Amazon Price: $40.33 | as of 08/25/2019(5:58am pst)
Availibility: Usually ships in 1-2 business days
List Price: $42.70

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  #18

RIB RIBXGA Split CORE Sensor, Enclosed, 75-150AMP, Adjustable

 PartNumber: RIBXGA   |   Asin: B00QW2G63A

RIBXGA, Functional Devices (RIB), Enclosed Split-Core AC Sensor 75-150Amp adjustable wire leads

Features

Brand: Rib   |   Manufacturer: FUNCTIONAL DEVICES

Package Dimensions: 2 x 2 x 4.5 inches (5.1 x 5.1 x 11.4 cm)

Amazon Price: $27.25 | as of 08/25/2019(5:58am pst)
Availibility: Usually ships in 1-2 business days
List Price: $28.54 | Used Price: $26.29

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  #19

Akozon Current Sensing Switch Normally Open Current Sensing Switch Adjustable AC 0.5-200A SZC03-NO-AL-CH

 Ean: 0736077445399   |    PartNumber: Akozonynm71qc3r5   |   Asin: B07LDDZ7B7

Features:
SZC03 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: SZC03-NO-AL-CH
Power supply: Not required
Rated load: 0.3A@135V AC/DC
Input straight-through current: 0.5-200A AC
Switch on minimum: 0.5 0.2A
Maximum overload of straight-through current: 200%
Accuracy: 10%
Power consumption: 1W
Leakage current: 1mA
Hysteresis: 1%
Response time: 200ms
Working environment: -30~70 , 0-95%RH
Dimensions: 62*90*25.5mm / 2.4*3.5*1.0in
Hole diameter: 20mm / 0.8in
Package weight: Approx. 80g/2.8oz

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 0.5-200A 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.
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Brand: Akozon   |   Manufacturer: Akozon

Item Dimensions: 1 x 3.54 x 2.48 inches (2.5 x 9.0 x 6.3 cm)   |   Package Dimensions: 1.3 x 2.7 x 3.8 inches (3.3 x 6.9 x 9.7 cm)

Amazon Price: $31.49 | as of 08/25/2019(5:58am pst)
Availibility: Usually ships in 24 hours
List Price: $31.49

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  #20

CTYRZCH SCT-013-000 Non-invasive AC Current Sensor Split Core Transformer 100A

 Ean: 6921489036738   |    PartNumber: 0356   |   Asin: B01C5JL5IY

Core material: ferrite
Mechanical strength: opening and closing times, no less than 1000 times (20 C)
Safety indicators: Dielectric strength 6000V AC/1min
Meet UL94-V0 flame retardant properties
Operating Temperature: -25 C ~ +70 C

Applications:
for AC motors, lighting equipment, air compressors and other current measurement,monitoring and protection.

Package include:
1 x Split Core Current Transformer SCT-013-000

Features

  • Opening size:13mmx13mm
  • Non-linearity 3%(10%-120% rated input current)
  • 1.5m leading wire, 3.5 3 core plug standard output.
  • Two form of output current, voltage (voltage output built-in the sampling resistor).
  • Operating Temperature: -25 C ~ +70 C
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Brand: CTYRZCH   |   Manufacturer: CTYRZCH

Package Dimensions: 1 x 4 x 5.5 inches (2.5 x 10.2 x 14.0 cm)

Amazon Price: $10.29 | as of 08/25/2019(5:58am pst)
Availibility:
List Price: $12.99

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