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. 499-5542
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. 532-9198
Mfr. Part No.HAIS 50-P
BrandLEM
TWD854.00
Each
units
- Open Loop ±150A - 5 V - - Hall Effect PCB Mount DC to 50 kHz ±1 % 15 x 8mm -40°C HAIS
RS Stock No. 179-6667
Mfr. Part No.LA 100-P
BrandLEM
TWD890.00
Each
units
- Closed Loop 0 → 150A 50mArms 12 → 15 V - - Hall Effect PCB Mount DC to 200 kHz ±0.7 % 12.7 x 7mm -40°C LA
RS Stock No. 435-8684
Mfr. Part No.HX 03-P/SP2
BrandLEM
TWD425.00
Each
units
- Open Loop ±9A - 12 → 15 V - - Hall Effect PCB Mount 50 kHz ±1 % 0.6mm -25°C HX
RS Stock No. 666-8214
Mfr. Part No.CKSR 50-NP
BrandLEM
TWD615.00
Each
units
- Closed Loop 50A - 5.25 V - - - PCB Mount 200 → 300 kHz ±0.8 % - -40°C CKSR
RS Stock No. 532-9205
Mfr. Part No.HTFS 200-P
BrandLEM
TWD836.00
Each
units
- Open Loop ±300A - 5 V - - Hall Effect PCB Mount DC → 240 kHz ±1 % 22mm -40°C HTFS
RS Stock No. 446-0636
Mfr. Part No.DK 300 B420
BrandLEM
TWD15,732.00
Each
units
- - 300A 4 → 20mA 20 → 50 V dc, 22 → 38 V ac - - - Panel Mount - ±1 % 21.7mm -20°C DK
RS Stock No. 532-9249
Mfr. Part No.HTFS 400-P/SP2
BrandLEM
TWD826.00
Each
units
- Open Loop ±600A - 5 V - - Hall Effect PCB Mount DC to 50 kHz ±1 % 22mm -40°C HTFS
RS Stock No. 451-1396
Mfr. Part No.LF 1005S
BrandLEM
TWD8,391.00
Each
units
- Closed Loop 0 → 1500A 200mArms 15 → 24 V - - Hall Effect Panel Mount DC to 150 kHz ±0.4 % 40.5mm -40°C LF
RS Stock No. 532-9182
Mfr. Part No.HAIS 400-P
BrandLEM
TWD719.00
Each
units
- Open Loop ±600A - 5 V - - Hall Effect PCB Mount DC to 50 kHz ±1 % 15 x 8mm -40°C HAIS
RS Stock No. 497-221
Mfr. Part No.LA 25-P
BrandLEM
TWD1,317.00
Each
units
- Closed Loop 0 → 55A 25mArms 12 → 15 V - - Hall Effect PCB Mount DC to 200 kHz ±1.25 % - -25°C LA
RS Stock No. 301-9473
Mfr. Part No.LTS 25NP
BrandLEM
TWD673.00
Each
units
- Closed Loop 0 → ±80A - 5 V - - Hall Effect PCB Mount DC 100 to 200 kHz ±0.2 % 3.2mm -40°C LTS
RS Stock No. 477-4711
Mfr. Part No.CSNS300M
BrandHoneywell
TWD3,356.00
Each
units
- Closed Loop 0 → 600A 150mA 15 V - - Hall Effect Busbar, PCB Mount DC to 150 kHz ±0.5 % 26mm -40°C CSN
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. 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. 451-1380
Mfr. Part No.LF 505S
BrandLEM
TWD5,514.00
Each
units
- Closed Loop 0 → 800A 100mArms 15 → 24 V - - Hall Effect Panel Mount DC to 100 kHz ±0.6 % 30.2mm -40°C LF
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. 522-018
Mfr. Part No.HAT 500-S
BrandLEM
TWD1,988.00
Each
units
- Open Loop ±1500A - 15 V - - Hall Effect Busbar, Plug In DC to 25 kHz ±1 % 40.5 x 30.5mm -10°C HAT
RS Stock No. 793-4587
Mfr. Part No.HLSR 20-P
BrandLEM
TWD443.00
Each
units
- Open Loop 50A 20A 4.5 → 5.5 V - - Hall Effect PCB Mount 400 kHz ±1 % - -40°C HLSR
RS Stock No. 532-9097
Mfr. Part No.HXS 20-NP
BrandLEM
TWD328.00
Each
units
- Open Loop ±60A - 5 V - - Hall Effect PCB Mount DC to 50 kHz ±1 % - -40°C HXS