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 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. 177-5952
Mfr. Part No.CSLA1CD
BrandHoneywell
£18.74
Each (In a Tray of 50)
Units
- - - - - - - - - - - - - -
RS Stock No. 650-554
Mfr. Part No.CSLA1CD
BrandHoneywell
£20.42
Each
Units
Open Loop 0 → 57A - 8 → 16 V dc - Hall Effect PCB Mount - - 10.9mm -25°C CSL +85°C 10.4mm
RS Stock No. 181-1429
Mfr. Part No.CSNT651
BrandHoneywell
£32.83
Each
Units
Closed Loop 0 → 150A 25mA 12 → 15 V dc - Hall Effect PCB Mount DC to 150 kHz ±0.5 % 12.5 x 9mm -40°C CSN +85°C 14.45mm
RS Stock No. 181-2129
Mfr. Part No.CSLA2CD
BrandHoneywell
£20.50
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. 477-4711
Mfr. Part No.CSNS300M
BrandHoneywell
£87.75
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 19mm
RS Stock No. 169-7652
Mfr. Part No.CSLA1CF
BrandHoneywell
£18.40
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. 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 +85°C 10.4mm
RS Stock No. 477-4749
Mfr. Part No.CSNS300F
BrandHoneywell
£87.43
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. 181-2135
Mfr. Part No.CSLA2DG
BrandHoneywell
£25.98
Each
Units
Open Loop 0 → 150A - 6 → 12 V dc - Hall Effect PCB Mount - - 15.7mm -25°C CSL +85°C 14.2mm
RS Stock No. 121-8175
Mfr. Part No.CSNA111
BrandHoneywell
£28.20
Each
Units
Closed Loop -60 → +60 mA -70 → +70A ±15 V - - PCB Mount DC to 150 kHz ±0.5 % - 0°C CSN +70°C 18mm
RS Stock No. 169-7653
Mfr. Part No.CSNA111
BrandHoneywell
£25.99
Each (In a Box of 30)
Units
Closed Loop -60 → +60 mA -70 → +70A ±15 V - - PCB Mount DC to 150 kHz ±0.5 % - 0°C CSN +70°C 18mm
RS Stock No. 181-2141
Mfr. Part No.CSNP661
BrandHoneywell
£39.07
Each
Units
Closed Loop 0 → 90A 50mA 12 → 15 V dc - Hall Effect PCB Mount DC to 150 kHz ±0.5 % - -40°C CSN +85°C 14.45mm
RS Stock No. 667-3437
Mfr. Part No.CSDA1DA
BrandHoneywell
£25.84
Each
Units
Open Loop 0.25 → 1A 20mA 6 → 16 V dc - - PCB Mount - ±0.5 % 10.9mm -25°C CSDA +85°C 25.4mm
RS Stock No. 189-5477
Mfr. Part No.CSNE151
BrandHoneywell
£33.01
Each
Units
Closed Loop 5 → 36A 25mA 15 V - Hall Effect PCB Mount DC to 150 kHz ±0.5 % - 0°C CSN +70°C 16.8mm
RS Stock No. 121-8174
Mfr. Part No.CSLW6B200M
BrandHoneywell
£16.13
Each
Units
- 9 -200 → +200mA 4.5 → 10.5 V dc - Hall Effect PCB Mount - ±1.5 % - -25°C CSL +100°C -
RS Stock No. 667-3455
Mfr. Part No.CSNE151-100
BrandHoneywell
£31.03
Each
Units
Closed Loop 0 → 90A 25mA 12 → 15 V dc - Hall Effect PCB Mount DC to 150 kHz ±0.5 % - -40°C CSN +85°C 12.7mm
RS Stock No. 667-3474
Mfr. Part No.CSNR151
BrandHoneywell
£43.71
Each
Units
Closed Loop 0 → 200A 62.5mA 12 → 15 V dc - Hall Effect PCB Mount DC to 150 kHz ±0.5 % - -40°C CSN +85°C 14.45mm
RS Stock No. 121-8178
Mfr. Part No.CSLA2EL
BrandHoneywell
£35.46
Each
Units
- 20 Maximum of 550A 6 → 12 V dc - Hall Effect PCB Mount - - - -25°C CSL +85°C 15.7mm
RS Stock No. 169-7654
Mfr. Part No.CSLA2EL
BrandHoneywell
£28.275
Each (In a Box of 50)
Units
- - Maximum of 550A 6 → 12 V dc - Hall Effect PCB Mount - - - -25°C CSL +85°C 15.7mm
RS Stock No. 121-8179
Mfr. Part No.CSLA2DK
BrandHoneywell
£80.27
Each
Units
- 20 Maximum of 400A 6 → 12 V dc - Hall Effect PCB Mount - - - -25°C CSL +85°C 14.2mm