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. 497-209
Mfr. Part No.AT 50 B420L
BrandLEM
£75.22
Each
Units
- 50A 4 → 20mA 20 → 30 V dc - - Cable Tie 50/60 Hz ±1.5 % 16mm -20°C AT +60°C 36.5mm
RS Stock No. 286-361
Mfr. Part No.LV 25-P
BrandLEM
£51.44
Each
Units
Closed Loop 0 → 14 25mA 12 → 15 V - Hall Effect PCB Mount - ±0.9 % - 0°C LV +70°C 29.2mm
RS Stock No. 532-9205
Mfr. Part No.HTFS 200-P
BrandLEM
£14.56
Each
Units
Open Loop ±300A - 5 V - Hall Effect PCB Mount DC → 240 kHz ±1 % 22mm -40°C HTFS +105°C 17mm
RS Stock No. 180-7357
Mfr. Part No.LA 55-P
BrandLEM
£18.01
Each
Units
Closed Loop 0 → 70A 50mArms 12 → 15 V - Hall Effect PCB Mount DC to 200 kHz ±0.9 % - -40°C LA +85°C 14.45mm
RS Stock No. 198-762
Mfr. Part No.AT 10 B420L
BrandLEM
£62.64
Each
Units
- 10A 4 → 20mA 20 → 30 V dc - - Cable Tie 50/60 Hz ±1.5 % 16mm -20°C AT +60°C 36.5mm
RS Stock No. 436-2330
Mfr. Part No.LTS 6NP
BrandLEM
£13.31
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 +85°C 10mm
RS Stock No. 286-311
Mfr. Part No.LA 25-NP
BrandLEM
£17.96
Each
Units
Closed Loop 0 → 36A 25mArms 15 V - Hall Effect PCB Mount DC to 150 kHz ±0.5 % - -40°C LA +85°C 29.2mm
RS Stock No. 715-7970
Mfr. Part No.2308027
£173.69
Each
Units
- 0 → 100A 4 → 20mA 20 → 30 V dc - - DIN Rail 20 → 6000 Hz ±1 % 32mm -40°C MCR-SL-CUC-100-I +65°C 33.8mm
RS Stock No. 497-221
Mfr. Part No.LA 25-P
BrandLEM
£29.30
Each
Units
Closed Loop 0 → 55A 25mArms 12 → 15 V - Hall Effect PCB Mount DC to 200 kHz ±1.25 % - -25°C LA +85°C 14.45mm
RS Stock No. 207-2877
Mfr. Part No.HTA 100-S
BrandLEM
£50.70
Each
Units
Open Loop ±300A - 15 V - Hall Effect Panel Mount DC to 50 kHz ±1 % 32mm -25°C HTA +85°C 27.5mm
RS Stock No. 301-9502
Mfr. Part No.HAS 200S
BrandLEM
£21.01
Each
Units
Open Loop ±600A - 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. 731-5267
Mfr. Part No.HTA 200-S
BrandLEM
£45.84
Each
Units
Open Loop 200A - ±15 V - Hall Effect Panel Mount DC to 50 kHz ±1 % 32mm -25°C HTA +85°C 27.5mm
RS Stock No. 321-6315
Mfr. Part No.LTS 15NP
BrandLEM
£13.31
Each
Units
Closed Loop 0 → ±48A - 5 V - Hall Effect PCB Mount DC 100 to 200 kHz ±0.2 % 3.2mm -40°C LTS +85°C 10mm
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. 301-9473
Mfr. Part No.LTS 25NP
BrandLEM
£13.31
Each
Units
Closed Loop 0 → ±80A - 5 V - Hall Effect PCB Mount DC 100 to 200 kHz ±0.2 % 3.2mm -40°C LTS +85°C 10mm
RS Stock No. 820-0431
Mfr. Part No.2904921
£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-D95 +80°C 85mm
RS Stock No. 497-182
Mfr. Part No.HASS 50-S
BrandLEM
£15.57
Each
Units
Open Loop ±150A - 5 V - Hall Effect Panel Mount DC to 50 kHz ±1 % 20.4 x 10.4mm -40°C HASS +85°C 30mm
RS Stock No. 179-6667
Mfr. Part No.LA 100-P
BrandLEM
£23.80
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 +85°C 14.45mm
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
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