Best Current Transducers of 2026

Brian Howie Avatar
Brian Howie
Last Updated: Jan 10, 2026

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Current transducers are devices that are used to measure electrical currents in a circuit. They are designed to convert the electrical signals into a proportional output signal, which can be used for monitoring and control purposes. These transducers are widely used in various industrial applications, including power generation, renewable energy, and process control. They are available in different types, such as Hall effect, Rogowski coil, and current transformers, each with its own unique features and advantages. With their high accuracy and reliability, current transducers are essential components in many modern electrical systems.

At a Glance: Our Top Picks

Johnson Controls CTD-C2G00-1 Current Transducer Cover #TOP 1
Johnson Controls CTD-C2G00-1 Current Transducer
ftb score rating icon 9.9
SazkJere SCT013 20A Split Core Current Transformer Cover #TOP 2
SazkJere SCT013 20A Split Core Current Transformer
ftb score rating icon 9.8
nodehawk FCS2151-SD-5V Current Transducer Cover #TOP 3
nodehawk FCS2151-SD-5V Current Transducer
ftb score rating icon 9.6

Top 10 Current Transducers

#TOP 1

Johnson Controls CTD-C2G00-1 Current Transducer

CTD-C2G00-1
Multicolor
Johnson Controls CTD-C2G00-1 Current Transducer Cover
Johnson Controls CTD-C2G00-1 Current Transducer Device, Split/Clamped Core Type, 30/60/120 A Multi Range, 0 to 5 VDC Output Signal

The Johnson Controls Current Transducer offers a clamped core design that significantly cuts down installation time and costs, making it user-friendly. With a slide switch for selectable amperage ranges, you can easily match the device to your specific application needs. It also supports multiple output options, including 4 to 20 mA and 0 to 10 VDC, ensuring compatibility with various systems. Additionally, the snap-on power relay feature allows for quick integration of an external relay, enhancing functionality and convenience.

What We Like
Fast installation
Flexible amperage selection
Multiple output options
Easy relay integration
#TOP 2

SazkJere SCT013 20A Split Core Current Transformer

20A 1V
SazkJere SCT013 20A Split Core Current Transformer Cover
SazkJere 4PCS SCT-013-020 20A Non-invasive Split Core Current Transformer Sensor SCT013 (20A 1V)

The SazkJere SCT013 Sensor is a compact and lightweight current transformer designed with a split-core size of 56 by 32 by 21mm, weighing just 72 grams, making it easy for you to handle and install. It comes with a one-meter long lead wire, giving you flexibility in positioning the sensor in your setup. The sensor features a standard 3.5mm three-core plug that provides both current and voltage outputs, allowing you to monitor electrical parameters conveniently. With an input range of 0 to 20 amps AC and a 1V output, this device is perfect for DIY projects and works well with popular platforms like Arduino and Raspberry Pi, helping you build or improve your electrical monitoring systems with ease.

What We Like
Compact and lightweight design
1-meter lead wire for flexibility
Standard 3.5mm three-core plug
Supports 0-20A AC input current
Compatible with Arduino and Raspberry Pi
#TOP 3

nodehawk FCS2151-SD-5V Current Transducer

3395597999415
FCS2151-SD-5V
nodehawk FCS2151-SD-5V Current Transducer Cover
Current Transmitter, FCS2151-SD-5V Current Transducer Transmitter Transformer Sensor AC Current Converter 0-200A

The nodehawk Current Transducer is designed for accurate and stable AC current monitoring, making it ideal if you need reliable current measurement. Its mutual inductance technology ensures precise detection even in strong magnetic fields, so you can trust its readings. The device offers flexibility by supporting various current ranges and output signals, allowing you to choose the best option for your setup. Installation is simple and convenient since you won’t need to connect any DC components during measurement. Plus, its through-core design provides excellent electrical isolation, keeping you and your equipment safe with a 2000V AC withstand voltage rating.

What We Like
High current detection accuracy
Supports multiple output signals
Easy installation
Strong electrical isolation
Durable self-extinguishing casing
#TOP 4

nodehawk FCS521-SD-420E Current Transducer

3395597999446
FCS521-SD-420E
nodehawk FCS521-SD-420E Current Transducer Cover
Current Transmitter, FCS521-SD-420E Current Transducer Transmitter Transformer Sensor AC Current Converter 0-50A

The nodehawk Current Transducer offers precise AC current monitoring with high accuracy, making it a reliable tool for measuring currents from 0 to 50A. Its design ensures safe separation between input and output, protecting you and your equipment. The device works well even in environments with strong magnetic fields, thanks to its low magnetic hysteresis. Installation is straightforward, and you don’t need to add any extra components to your circuit, which saves you time and effort. Plus, its built-in isolation can handle voltages up to 2000V AC, providing extra safety during use. This makes it a convenient and secure choice for your current monitoring needs.

What We Like
High current detection accuracy
Safe input-output isolation
Strong magnetic field resistance
Easy installation
High voltage isolation
#TOP 5

MOMOJA 4-20mA Current Loop Signal Generator

1AA800954
Black
As pictures shown
MOMOJA 4-20mA Current Loop Signal Generator Cover
MOMOJIA 2-Wire 4-20mA Current Loop Signal Generator Panel-Mounted Current Transducer Support 2,3,4 Wires

The MOMOJIA Current Loop Generator is designed to work with 2, 3, or 4-wire systems, giving you flexible wiring options without worrying about damaging your equipment. It offers nine programmable output settings, allowing you to simulate real-world testing conditions by adjusting current levels and running times to match your specific needs. The device uses a digital rotary encoder for precise adjustments, which is more reliable than traditional potentiometers that can be affected by temperature and humidity. Plus, you can connect it in either polarity on a two-wire system, so wiring mistakes won’t harm your meter, providing you with peace of mind and easy setup.

What We Like
Flexible wiring compatibility
Programmable output settings
Digital rotary encoder
Polarity protection
High precision
#TOP 6

Current Transmitter FCS521-SD-5V

3395597999460
FCS521-SD-5V
Current Transmitter FCS521-SD-5V Cover
Current Transmitter, FCS521-SD-5V Current Transducer Transmitter Transformer Sensor AC Current Converter 0-50A

The Nodehawk Current Transmitter is a high-performance current monitoring device that offers accurate and stable measurements. With its mutual inductance current monitoring, it ensures high current detection accuracy and safe isolation of input and output. The device is capable of measuring AC current ranging from 0-10A, 20A, to 50A, and provides output signals in three different forms: 0-5V, 0-10V, and 4-20mA. Its through-heart structure design allows for easy installation and use without the need to connect the DC series into the circuit during measurement. Additionally, the Current Transmitter features a durable outer casing made of self-extinguishing material, ensuring safety and longevity. It is suitable for various applications requiring current and voltage conversion, offering strong overload ability, high precision, high isolation, and low power consumption.

What We Like
Accurate and stable measurements
Easy installation and use
Safe and durable
Multiple output signal options
Wide range of current measurement capabilities
#TOP 7

Current Transmitter SZT20-CH-420E

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Current Transmitter SZT20-CH-420E Cover
Current Transmitter, SZT20-420E Current Transducer Transmitter Transformer Sensor AC Current Converter 0-200A

The Current Transmitter SZT20-CH-420E offers high-accuracy, stable performance, and safe isolation between input and output. It has a through-heart structure design and can withstand voltage up to 2000V AC. Users can select from a variety of output signals, making it easy to install and use. It is suitable for various applications that require current and voltage conversion, providing high precision, security, and anti-interference ability.

What We Like
High accuracy and stable performance
Safe isolation between input and output
Easy to install and use with various output signals
Through-heart structure design and ability to withstand high voltage
Suitable for various applications with high precision and anti-interference ability
#TOP 8

Yanmis SZT15-CH-420E Current Transducer

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Yanmis SZT15-CH-420E Current Transducer Cover
Current Transducer, SZT15-420E Current Transducer Transmitter Transformer Sensor AC Current Converter 0-50A,Stable Performance

The Yanmis Current Transducer is designed for real-time measurement of AC current, converting it to a DC output of your choice, such as 0-5V or 4-20mA. With a remarkable insulation withstand voltage of 2000V AC, it ensures safety and reliability in various electrical environments. You will appreciate its low magnetic hysteresis, making it effective even in strong magnetic fields. Additionally, its durable casing not only resists high overloads but also minimizes power consumption and interference, providing you with a dependable tool for monitoring and controlling AC current.

What We Like
Real-time AC current measurement
High insulation voltage
Low power consumption
Strong overload capability
#TOP 9

FEARLIE AC Current Transmitter 0-100A 4-20mA Output

0-100A/4-20mA
FEARLIE AC Current Transmitter 0-100A 4-20mA Output Cover
AC Current Transmitter,Hall DC Sensor,Output to PLC or Instrument,High Precision Perforated Sensing Current 0-100V-420mA

The FEARLIE AC Current Transmitter lets you measure AC current in real time with selectable ranges from 0-5A up to 0-200A, giving you flexibility to match your specific needs. It converts the measured AC current into a standard 4-20mA DC signal, making it easy to connect with your control systems or instruments. This device is designed with high precision and strong overload protection, so you can rely on accurate readings even in demanding environments. Plus, its high isolation and interference resistance ensure stable and safe operation, helping you maintain smooth industrial automation processes.

What We Like
Wide current range selection
Standard 4-20mA output
High precision measurement
Strong overload protection
High isolation and interference resistance
#TOP 10

SazkJere SCT016 120A Split Core Current Transformer

SJ71-120A
SazkJere SCT016 120A Split Core Current Transformer Cover
SazkJere SCT016 120A 40mA Non-invasive Split Core Current Transformer 0-120A Open Close Transformer Sensor

The SazkJere SCT016 Transformer is a compact and lightweight current sensor designed for easy installation. With a maximum input of 120A and an output of 40mA, it allows you to accurately measure electrical current in your projects. Its split-core design includes a safety lock buckle, so you can open and close the sensor around a wire without disconnecting it, making setup quick and safe. The 50cm cable output gives you flexibility in positioning the sensor, perfect for DIY electronics, especially when working with Arduino or Raspberry Pi systems.

What We Like
Compact size
Lightweight design
Safety lock buckle
Long cable output
Arduino and Raspberry Pi compatible
Buying Guide Image

Frequently Asked Questions (FAQs)

1. Where are current transducers used?

Current transducers are commonly used in Building Automation Systems (BAS). They can be found in applications such as digital signaling current transducers for indicating motor status (e.g., pumps or fans) and analog signal current transducers for measuring electrical usage.

2. What is the function of a current transducer with 4-20mA output?

A current transducer with a 4-20mA output can be used to monitor the current in motor windings. It can easily interface with a PLC or remote telemetry unit. These transducers provide features like galvanic isolation between input/output, high accuracy, low drifting by temperature, and wide temperature operational range.

3. What are the common types of transducers?

There are three main types of transducers: convex/curvilinear, linear, and phased/sector transducers. Additionally, there are specialized transducers like endocavity, transesophageal, volume, and continuous wave (CW)/pencil transducers.

4. How do you wire a current transducer?

To wire a current transducer, connect the positive (+) terminal of the transducer to the AIN0 of the LabJack. Connect the negative (-) terminal of the transducer to the GND of the LabJack. The Range Jumper on the transducer has different settings, such as Low: 10 AMPS: 10 VDC (Recommended).

Editor's Notes

During our current transducer research, we found 24 current transducer products and shortlisted 10 quality products. We collected and analyzed 2,625 customer reviews through our big data system to write the current transducers list. We found that most customers choose current transducers with an average price of $27.47.

The current transducers are available for purchase. We have researched hundreds of brands and picked the top brands of current transducers, including Johnson Controls, SazkJere, nodehawk, MOMOJIA, Walfront. The seller of top 1 product has received honest feedback from 384 consumers with an average rating of 4.7.

Written by
Brian Howie Avatar

Brian Howie is a content writer and senior industrial designer. After graduation from Westminster College, he has been engaged in product design and manufacturing for 18 years. Brian Howie has always found great pleasure in designing industrial products and sharing his ideas and experience online.