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. 436-2330
Mfr. Part No.LTS 6NP
BrandLEM
TWD673.00
Each
units
- Closed Loop 0 → ±19.2A - 5 V - - Hall Effect PCB Mount DC 100 to 200 kHz ±0.2 % 3.2mm -40°C LTS
RS Stock No. 181-2129
Mfr. Part No.CSLA2CD
BrandHoneywell
TWD753.00
Each
units
- Open Loop 0 → 72A - 6 → 12 V dc - - Hall Effect PCB Mount - - 10.9mm -25°C CSL
RS Stock No. 435-8634
Mfr. Part No.HX 05-P
BrandLEM
TWD433.00
Each
units
- Open Loop ±15A - 15 V - - Hall Effect PCB Mount 50 kHz ±1 % 0.8mm -25°C HX
RS Stock No. 731-5267
Mfr. Part No.HTA 200-S
BrandLEM
TWD2,061.00
Each
units
- Open Loop 200A - ±15 V - - Hall Effect Panel Mount DC to 50 kHz ±1 % 32mm -25°C HTA
RS Stock No. 206-2381
Mfr. Part No.HAL 50-S
BrandLEM
TWD1,552.00
Each
units
- Open Loop ±150A - 15 V - - Hall Effect Panel Mount DC to 50 kHz ±1 % 20 x 15mm -25°C HAL
RS Stock No. 527-8545
Mfr. Part No.DHR 300 C10
BrandLEM
TWD8,477.00
Each
units
- Open Loop 300A - 20 → 50 V dc - - Hall Effect Panel Mount DC 20 to 6000 Hz ±1 % 32mm -40°C DHR
RS Stock No. 451-1403
Mfr. Part No.LF 2005S
BrandLEM
TWD12,670.00
Each
units
- Closed Loop 2000A 400mArms 15 → 24 V - - Hall Effect Panel Mount DC to 100 kHz ±0.3 % 60.5mm -40°C LF
RS Stock No. 497-110
Mfr. Part No.LA 200-P
BrandLEM
TWD1,719.00
Each
units
- Closed Loop 0 → 300A 100mArms 12 → 15 V - - Hall Effect PCB Mount DC to 100 kHz ±0.65 % 13 x 11mm -40°C LA
RS Stock No. 451-1374
Mfr. Part No.LF 306S
BrandLEM
TWD2,273.00
Each
units
- Closed Loop 0 → 500A 150mArms 12 → 15 V - - Hall Effect Panel Mount DC to 100 kHz ±0.4 % 25.5mm -25°C LF
RS Stock No. 169-7656
Mfr. Part No.CSLA2DK
BrandHoneywell
TWD1,222.00
Each (In a Box of 50)
units
- - - Maximum of 400A 6 → 12 V dc - - Hall Effect PCB Mount - - - -25°C CSL
RS Stock No. 820-0444
Mfr. Part No.2904923
TWD12,159.00
Each
units
- - 100 → 4000A 0 → 1A 24 V dc - - - Flange Mount 10 → 5000 Hz, 45 → 65 Hz ±0.21 % 8.3mm -30°C PACT RCP-4000A-1A-D190
RS Stock No. 793-4629
Mfr. Part No.CTSR 0.3-P
BrandLEM
TWD1,295.00
Each
units
- - 16 → 21.6 300mA 4.75 → 5.25 V - - Fluxgate PCB Mount 3.5 kHz 1.9 % 20.3mm -40°C CTSR
RS Stock No. 499-5362
Mfr. Part No.LTSR 15-NP
BrandLEM
TWD661.00
Each
units
- Closed Loop 0 → ±48A - 5 V - - Hall Effect PCB Mount DC 100 to 200 kHz ±0.2 % 3.2mm -40°C LTSR
RS Stock No. 499-5564
Mfr. Part No.AP 50 B420L
BrandLEM
TWD4,747.00
Each
units
- - 50A 4 → 20mA 12 → 24 V dc - - - DIN Rail 30 → 2000 Hz ±1 % 18mm -20°C AP
RS Stock No. 731-5261
Mfr. Part No.HTA 300-S
BrandLEM
TWD2,061.00
Each
units
- Open Loop 300A - ±15 V - - Hall Effect Panel Mount DC to 50 kHz ±1 % 32mm -25°C HTA
RS Stock No. 446-0591
Mfr. Part No.DK 100 B10
BrandLEM
TWD14,334.00
Each
units
- Open Loop 100A - 20 → 50 V dc - - Hall Effect Panel Mount - ±2 % 21.7mm -20°C DK
RS Stock No. 121-8178
Mfr. Part No.CSLA2EL
BrandHoneywell
TWD1,745.00
Each
units
- - 20 Maximum of 550A 6 → 12 V dc - - Hall Effect PCB Mount - - - -25°C CSL
RS Stock No. 497-182
Mfr. Part No.HASS 50-S
BrandLEM
TWD700.00
Each
units
- Open Loop ±150A - 5 V - - Hall Effect Panel Mount DC to 50 kHz ±1 % 20.4 x 10.4mm -40°C HASS
RS Stock No. 206-2397
Mfr. Part No.HAL 100-S
BrandLEM
TWD2,723.00
Each
units
- Open Loop ±300A - 15 V - - Hall Effect Panel Mount DC to 50 kHz ±1 % 20 x 15mm -25°C HAL
RS Stock No. 446-0642
Mfr. Part No.DK 400 B420
BrandLEM
TWD15,732.00
Each
units
- - 400A 4 → 20mA 20 → 50 V dc, 22 → 38 V ac - - - Panel Mount - ±1 % 21.7mm -20°C DK