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 analogue ammeter, a digital 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. 731-5270
Mfr. Part No.HTA 600-S
BrandLEM
£46.62
Each
Units
- Open Loop 600A - ±15 V - - Hall Effect Panel Mount DC to 50 kHz ±1 % 32mm -25°C HTA
RS Stock No. 451-1324
Mfr. Part No.LA 100P/SP13
BrandLEM
£23.80
Each
Units
- Closed Loop 0 → 160A 100mArms 12 → 15 V - - Hall Effect PCB Mount DC to 200 kHz ±0.7 % 12.7 x 7mm -25°C LA
RS Stock No. 477-4711
Mfr. Part No.CSNS300M
BrandHoneywell
£93.77
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. 650-560
Mfr. Part No.CSLA1CF
BrandHoneywell
£24.93
Each
Units
- Open Loop 0 → 100A - 8 → 16 V dc - - Hall Effect PCB Mount - - 10.9mm -25°C CSL
RS Stock No. 169-7652
Mfr. Part No.CSLA1CF
BrandHoneywell
£17.315
Each (In a Box of 50)
Units
- Open Loop 0 → 100A - 8 → 16 V dc - - Hall Effect PCB Mount - - 10.9mm -25°C CSL
RS Stock No. 497-401
Mfr. Part No.LAX 100-NP
BrandLEM
£18.46
Each
Units
- Closed Loop 0 160A 50mA 11.4 15.75 V - - Hall Effect PCB Mount >300 kHz ±0.91 % - -40°C LAX
RS Stock No. 451-1396
Mfr. Part No.LF 1005S
BrandLEM
£153.90
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. 527-8523
Mfr. Part No.DHR 100 C10
BrandLEM
£166.31
Each
Units
- Open Loop 100A - 20 50 V dc - - Hall Effect Panel Mount DC 20 to 6000 Hz ±1 % 32mm -40°C DHR
RS Stock No. 914-5313
Mfr. Part No.CT132TRAN20A-5/10V
BrandHOBUT
£28.26
Each
Units
- - 20A - 15 → 30 V - - Loop Sensor DIN Rail 45 → 65 Hz Class 0.5 % 21mm -15°C CT132TRAN
RS Stock No. 532-9261
Mfr. Part No.HTFS 800-P/SP2
BrandLEM
£16.91
Each
Units
- Open Loop ±1200A - 5 V - - Hall Effect PCB Mount DC to 50 kHz ±1 % 22mm -40°C HTFS
RS Stock No. 793-4629
Mfr. Part No.CTSR 0.3-P
BrandLEM
£26.07
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. 337-2746
Mfr. Part No.2814728
£195.05
Each
Units
- - 0 55A 0 20mA 20 30 V dc - - - Chassis Mount 15 400 Hz <0.5 % - -20°C MCR-S10-50-UI-DCI-NC
RS Stock No. 497-091
Mfr. Part No.HTR 50-SB
BrandLEM
£101.40
Each
Units
- Open Loop ±100A - 12 15 V - - Hall Effect Busbar, Panel Mount DC to 10 kHz ±2 % 21mm -10°C HTR
RS Stock No. 497-378
Mfr. Part No.AT 50 B10
BrandLEM
£58.46
Each
Units
- - 50A - - - - - Cable Tie 50/60 Hz ±1.5 % 16mm -20°C AT
RS Stock No. 321-6286
Mfr. Part No.LAH25-NP
BrandLEM
£16.74
Each
Units
- Closed Loop 25A 25mArms 12 15 V - - Hall Effect PCB Mount DC to 200 kHz ±0.3 % - -25°C LAH
RS Stock No. 477-4749
Mfr. Part No.CSNS300F
BrandHoneywell
£86.67
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. 666-8172
Mfr. Part No.CAS 6-NP
BrandLEM
£10.31
Each
Units
- Closed Loop 6A - 5.25 V - - - PCB Mount 200 → 300 kHz ±0.8 % - -40°C CAS
RS Stock No. 181-2135
Mfr. Part No.CSLA2DG
BrandHoneywell
£25.66
Each
Units
- Open Loop 0 → 150A - 6 → 12 V dc - - Hall Effect PCB Mount - - 15.7mm -25°C CSL
RS Stock No. 731-5261
Mfr. Part No.HTA 300-S
BrandLEM
£46.23
Each
Units
- Open Loop 300A - ±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
£48.12
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
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