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 Input Current Range Sensor Technology Nominal Current Output Current Range Supply Voltage Transformer Type Maximum Cable Diameter Sensor Type Mounting Type Frequency Bandwidth Accuracy Bore Size Minimum Operating Temperature Series
RS Stock No. 499-5536
Mfr. Part No.AP 50 B10
BrandLEM
TWD4,232.00
Each
units
- Closed Loop 50A - 24 V dc - - - DIN Rail 30 → 2000 Hz ±1 % 18mm -20°C AP
RS Stock No. 497-271
Mfr. Part No.HTR 200-SB
BrandLEM
TWD4,559.00
Each
units
- Open Loop ±400 A - 12 → 15 V - - Hall Effect Busbar, Panel Mount DC to 10 kHz ±2 % 21mm -10°C HTR
RS Stock No. 207-2984
Mfr. Part No.LA 205-S
BrandLEM
TWD3,276.00
Each
units
- Closed Loop 0 → 300A 100mArms 12 → 15 V - - Hall Effect Panel Mount DC to 100 kHz ±0.8 % 22.7 x 17.4mm -10°C LA
RS Stock No. 435-8628
Mfr. Part No.HX 03-P
BrandLEM
TWD431.00
Each
units
- Open Loop ±9A - ±15 V - - Hall Effect PCB Mount 50 kHz ±1 % 0.6mm -25°C HX
RS Stock No. 180-7357
Mfr. Part No.LA 55-P
BrandLEM
TWD839.00
Each
units
- Closed Loop 0 → 70A 50mArms 12 → 15 V - - Hall Effect PCB Mount DC to 200 kHz ±0.9 % - -40°C LA
RS Stock No. 286-361
Mfr. Part No.LV 25-P
BrandLEM
TWD2,086.00
Each
units
- Closed Loop 0 → 14 25mA 12 → 15 V - - Hall Effect PCB Mount - ±0.9 % - 0°C LV
RS Stock No. 731-5270
Mfr. Part No.HTA 600-S
BrandLEM
TWD2,079.00
Each
units
- Open Loop 600A - ±15 V - - Hall Effect Panel Mount DC to 50 kHz ±1 % 32mm -25°C HTA
RS Stock No. 532-9148
Mfr. Part No.HAIS 100-P
BrandLEM
TWD785.00
Each
units
- Open Loop ±300A - 5 V - - Hall Effect PCB Mount DC to 50 kHz ±1 % 15 x 8mm -40°C HAIS
RS Stock No. 301-9489
Mfr. Part No.HAS 50S
BrandLEM
TWD865.00
Each
units
- Open Loop ±150A - 15 V - - Hall Effect Panel Mount DC to 50 kHz ±1 % 20.4 x 10.4mm -10°C HAS
RS Stock No. 207-2912
Mfr. Part No.HTA 400-S
BrandLEM
TWD2,303.00
Each
units
- Open Loop ±1000A - 15 V - - Hall Effect Panel Mount DC to 50 kHz ±1 % 32mm -25°C HTA
RS Stock No. 451-1352
Mfr. Part No.LF 205S
BrandLEM
TWD4,527.00
Each
units
- Closed Loop 0 → 420A 100mArms 12 → 15 V - - Hall Effect Panel Mount DC to 100 kHz ±0.5 % 15.6mm -40°C LF
RS Stock No. 321-6292
Mfr. Part No.LAH 50-P
BrandLEM
TWD680.00
Each
units
- Closed Loop 50A 25mArms 12 → 15 V - - Hall Effect PCB Mount DC to 200 kHz ±0.25 % - -25°C LAH
RS Stock No. 914-5313
Mfr. Part No.CT132TRAN20A-5/10V
BrandHOBUT
TWD1,202.00
Each
units
- - 20A - 15 → 30 V - - Loop Sensor DIN Rail 45 → 65 Hz Class 0.5 % 21mm -15°C CT132TRAN
RS Stock No. 207-2940
Mfr. Part No.HTA 1000-S
BrandLEM
TWD2,861.00
Each
units
- Open Loop ±1000A - 15 V - - Hall Effect Panel Mount DC to 50 kHz ±1 % 32mm -25°C HTA
RS Stock No. 207-3016
Mfr. Part No.HY 5-P
BrandLEM
TWD828.00
Each
units
- Open Loop ±15A - 12 → 15 V - - Hall Effect PCB Mount DC to 50 kHz ±1 % 0.7mm -10°C HY
RS Stock No. 177-5952
Mfr. Part No.CSLA1CD
BrandHoneywell
TWD669.30
Each (In a Tray of 50)
units
- - - - - - - - - - - - - -
RS Stock No. 914-5284
Mfr. Part No.CT132TRAN50A-4/20MA
BrandHOBUT
TWD1,570.00
Each
units
- - 50A 4 → 20mA 15 → 30 V - - Loop Sensor DIN Rail 45 → 65 Hz Class 0.5 % 21mm -15°C CT132TRAN
RS Stock No. 521-958
Mfr. Part No.HAT 400-S
BrandLEM
TWD1,988.00
Each
units
- Open Loop ±1200A - 15 V - - Hall Effect Busbar, Plug In DC to 25 kHz ±1 % 40.5 x 30.5mm -10°C HAT
RS Stock No. 499-5542
Mfr. Part No.AP 100 B10
BrandLEM
TWD4,058.00
Each
units
- Closed Loop 100A - 24 V dc - - - DIN Rail 30 → 2000 Hz ±1 % 18mm -20°C AP
RS Stock No. 650-554
Mfr. Part No.CSLA1CD
BrandHoneywell
TWD933.00
Each
units
- Open Loop 0 → 57A - 8 → 16 V dc - - Hall Effect PCB Mount - - 10.9mm -25°C CSL