Current Transducers

Current transducers, or current sensors, are an electrical component that detects electric current in a wire and converts it into another type of electrical signal proportional to the current value. The generated signal could be analogue voltage, current or a digital output. This generated signal can be then used to display the measured current in an ammeter, or can be used for the purpose of controlling other circuits.

Current Transducer Types

Current sensors can be either open-loop or closed-loop.
•Open-Loop Sensor: This type measures AC and DC currents and provides electrical isolation between the circuit being measured and the output of the sensor. Open-loop current sensors are generally preferred in battery-powered circuits.


•Closed-Loop Sensor: The Closed-Loop sensor is sometimes called a ’Zero-Flux’ sensor because it features a Hall-Effect sensor that feeds back an opposing current into a secondary coil, wound on the magnetic core to zero the flux produced in the magnetic core by the primary current. Closed-loop sensors are often used when high accuracy is essential.

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Description Price Sensor Technology Nominal Current Output Current Range Supply Voltage Transformer Type Sensor Type Mounting Type Frequency Bandwidth Accuracy Bore Size Minimum Operating Temperature Series Maximum Operating Temperature Depth
RS Stock No. 301-9473
Mfr. Part No.LTS 25NP
BrandLEM
$23.74
Each
units
Closed Loop 0 → ±80A - 5 V - Hall Effect PCB Mount DC 100 to 200 kHz ±0.2 % 3.2mm -40°C LTS +85°C 10mm
RS Stock No. 497-209
Mfr. Part No.AT 50 B420L
BrandLEM
$176.27
Each
units
- 50A 4 → 20mA 20 → 30 V dc - - Cable Tie 50/60 Hz ±1.5 % 16mm -20°C AT +60°C 36.5mm
RS Stock No. 820-0431
Mfr. Part No.2904921
$517.49
Each
units
- 100 → 4000A 0 → 1A 24 V dc - - Flange Mount 10 → 5000 Hz, 45 → 65 Hz ±0.21 % 8.3mm -30°C - +80°C 85mm
RS Stock No. 532-9205
Mfr. Part No.HTFS 200-P
BrandLEM
$40.14
Each
units
Open Loop ±300A - 5 V - Hall Effect PCB Mount DC → 240 kHz ±1 % 22mm -40°C HTFS +105°C 17mm
RS Stock No. 302-6077
Mfr. Part No.2814359
$202.17
Each
units
- 0 → 5A 0 → 20mA - - - Chassis Mount 45 → 60 Hz <0.5 % - -25°C MCR +60°C 114.5mm
RS Stock No. 181-2129
Mfr. Part No.CSLA2CD
BrandHoneywell
$42.72
Each
units
Open Loop 0 → 72A - 6 → 12 V dc - Hall Effect PCB Mount - - 10.9mm -25°C CSL +85°C 10.4mm
RS Stock No. 497-198
Mfr. Part No.HASS 100-S
BrandLEM
$29.05
Each
units
Open Loop ±300A - 5 V - Hall Effect Panel Mount DC to 50 kHz ±1 % 20.4 x 10.4mm -40°C HASS +85°C 30mm
RS Stock No. 731-5261
Mfr. Part No.HTA 300-S
BrandLEM
$108.03
Each
units
Open Loop 300A - ±15 V - Hall Effect Panel Mount DC to 50 kHz ±1 % 32mm -25°C HTA +85°C 27.5mm
RS Stock No. 527-8523
Mfr. Part No.DHR 100 C10
BrandLEM
$426.40
Each
units
Open Loop 600A - 20 → 50 V dc - Hall Effect Panel Mount DC 20 to 6000 Hz ±1 % 32mm -40°C DHR +70°C 25mm
RS Stock No. 446-0614
Mfr. Part No.DK 100 B420
BrandLEM
$721.13
Each
units
Open Loop 100A 4 → 20mA 20 → 50 V dc - Hall Effect Panel Mount - ±2 % 21.7mm -20°C DK +50°C 30.2mm
RS Stock No. 731-5267
Mfr. Part No.HTA 200-S
BrandLEM
$130.21
Each
units
Open Loop 200A - ±15 V - Hall Effect Panel Mount DC to 50 kHz ±1 % 32mm -25°C HTA +85°C 27.5mm
RS Stock No. 477-4749
Mfr. Part No.CSNS300F
BrandHoneywell
$143.99
Each
units
Closed Loop 0 → 600A 150mA 15 V - Hall Effect Busbar, PCB Mount DC to 150 kHz ±0.5 % 26mm -40°C CSN +85°C 17.9mm
RS Stock No. 286-361
Mfr. Part No.LV 25-P
BrandLEM
$118.58
Each
units
Closed Loop 0 → 14 25mA 12 → 15 V - Hall Effect PCB Mount - ±0.9 % - 0°C LV +70°C 29.2mm
RS Stock No. 207-2912
Mfr. Part No.HTA 400-S
BrandLEM
$156.01
Each
units
Open Loop ±1000A - 15 V - Hall Effect Panel Mount DC to 50 kHz ±1 % 32mm -25°C HTA +85°C 27.5mm
RS Stock No. 198-762
Mfr. Part No.AT 10 B420L
BrandLEM
$164.42
Each
units
- 10A 4 → 20mA 20 → 30 V dc - - Cable Tie 50/60 Hz ±1.5 % 16mm -20°C AT +60°C 36.5mm
RS Stock No. 146-2052
Mfr. Part No.CDS4050ACC-KA
BrandSensitec
$18.226
Each (In a Tray of 50)
units
- 50A 6mA 5 V - AMR Effect PCB Mount DC to 400 kHz 0.8 % - -40°C CDS4000 +105°C 22mm
RS Stock No. 914-5284
Mfr. Part No.CT132TRAN50A-4/20MA
BrandHOBUT
$84.39
Each
units
- 50A 4 → 20mA 15 → 30 V - Loop Sensor DIN Rail 45 → 65 Hz Class 0.5 % 21mm -15°C CT132TRAN +50°C 30mm
RS Stock No. 169-7652
Mfr. Part No.CSLA1CF
BrandHoneywell
$41.40
Each (In a Box of 50)
units
Open Loop 0 → 100A - 8 → 16 V dc - Hall Effect PCB Mount - - 10.9mm -25°C CSL +85°C 10.4mm
RS Stock No. 820-0444
Mfr. Part No.2904923
$504.17
Each
units
- 100 → 4000A 0 → 1A 24 V dc - - Flange Mount 10 → 5000 Hz, 45 → 65 Hz ±0.21 % 8.3mm -30°C - +80°C 85mm
RS Stock No. 650-560
Mfr. Part No.CSLA1CF
BrandHoneywell
$36.22
Each
units
Open Loop 0 → 100A - 8 → 16 V dc - Hall Effect PCB Mount - - 10.9mm -25°C CSL +85°C 10.4mm
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