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. 793-4613
Mfr. Part No.DVL 1000
BrandLEM
£164.91
Each
Units
- - 50mA ±15 → 24 V - - Panel Mount 14 kHz ±0.5 % - -40°C DVL +85°C 100mm
RS Stock No. 207-2940
Mfr. Part No.HTA 1000-S
BrandLEM
£63.61
Each
Units
Open Loop ±1000A - 15 V - Hall Effect Panel Mount DC to 50 kHz ±1 % 32mm -25°C HTA +85°C 27.5mm
RS Stock No. 914-5288
Mfr. Part No.CT132TRAN100A-4/20MA
BrandHOBUT
£36.97
Each
Units
- 100A 4 → 20mA 15 → 30 V - Loop Sensor DIN Rail 45 → 65 Hz Class 0.5 % 21mm -15°C CT132TRAN +50°C 30mm
RS Stock No. 914-5310
Mfr. Part No.CT132TRAN10A-5/10V
BrandHOBUT
£28.28
Each
Units
- 10A - 15 → 30 V - Loop Sensor DIN Rail 45 → 65 Hz Class 0.5 % 21mm -15°C CT132TRAN +50°C 30mm
RS Stock No. 793-4638
Mfr. Part No.LA 306-S
BrandLEM
£38.13
Each
Units
Closed Loop 400A 200mA ±15 V - Hall Effect Chassis Mount 50 kHz ±0.7 % 30 x 13mm -40°C LA +85°C 26mm
RS Stock No. 497-110
Mfr. Part No.LA 200-P
BrandLEM
£38.23
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 +85°C 21.4mm
RS Stock No. 198-885
Mfr. Part No.TT 100-SD
BrandLEM
£30.26
Each
Units
- 100A 33.33mA - - - Cable Tie 50/60 Hz ±1 % 16mm -25°C TT +70°C 36.5mm
RS Stock No. 198-835
Mfr. Part No.AT 20 B10
BrandLEM
£48.72
Each
Units
- 20A - - - - Cable Tie 50/60 Hz ±1.5 % 16mm -20°C AT +60°C 36.5mm
RS Stock No. 820-0435
Mfr. Part No.2904922
£278.72
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-D140 +80°C 85mm
RS Stock No. 206-2381
Mfr. Part No.HAL 50-S
BrandLEM
£42.99
Each
Units
Open Loop ±150A - 15 V - Hall Effect Panel Mount DC to 50 kHz ±1 % 20 x 15mm -25°C HAL +85°C 31.3mm
RS Stock No. 302-6077
Mfr. Part No.2814359
£99.63
Each
Units
- 0 → 5A 0 → 20mA - - - Chassis Mount 45 → 60 Hz <0.5 % - -25°C MCR-SLP-1-5-UI-0 +60°C 114.5mm
RS Stock No. 198-778
Mfr. Part No.AT 20 B420L
BrandLEM
£62.64
Each
Units
- 20A 4 → 20mA 20 → 30 V dc - - Cable Tie 50/60 Hz ±1.5 % 16mm -20°C AT +60°C 36.5mm
RS Stock No. 914-5284
Mfr. Part No.CT132TRAN50A-4/20MA
BrandHOBUT
£36.97
Each
Units
- 50A 4 → 20mA 15 → 30 V - Loop Sensor DIN Rail 45 → 65 Hz Class 0.5 % 21mm -15°C CT132TRAN +50°C 30mm
RS Stock No. 301-9489
Mfr. Part No.HAS 50S
BrandLEM
£20.33
Each
Units
Open Loop ±150A - 15 V - Hall Effect Panel Mount DC to 50 kHz ±1 % 20.4 x 10.4mm -10°C HAS +80°C 30mm
RS Stock No. 532-9227
Mfr. Part No.HTFS 400-P
BrandLEM
£14.56
Each
Units
Open Loop ±600A - 5 V - Hall Effect PCB Mount DC to 50 kHz ±1 % 22mm -40°C HTFS +105°C 17mm
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. 446-0614
Mfr. Part No.DK 100 B420
BrandLEM
£357.71
Each
Units
Open Loop 100A 4 → 20mA 20 → 50 V dc - Hall Effect Panel Mount - ±2 % 21.7mm -20°C DK +50°C 30.2mm
RS Stock No. 522-030
Mfr. Part No.AT 5 B420L
BrandLEM
£62.64
Each
Units
- 5A 4 → 20mA 20 → 30 V dc - - Cable Tie 50/60 Hz ±1.5 % 16mm -20°C AT +60°C 36.5mm
RS Stock No. 522-014
Mfr. Part No.HAT 200-S
BrandLEM
£43.06
Each
Units
Open Loop ±600A - 15 V - Hall Effect Busbar, Plug In DC to 25 kHz ±1 % 40.5 x 30.5mm -10°C HAT +80°C 37mm
RS Stock No. 207-2984
Mfr. Part No.LA 205-S
BrandLEM
£74.09
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 +85°C 56.5mm
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