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. 499-5378
Mfr. Part No.LTSR 25-NP
BrandLEM
TWD665.00
Each
units
- Closed Loop 0 → ±80A - 5 V - - Hall Effect PCB Mount DC 100 to 200 kHz ±0.2 % 3.2mm -40°C LTSR
RS Stock No. 793-4629
Mfr. Part No.CTSR 0.3-P
BrandLEM
TWD1,295.00
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. 321-6286
Mfr. Part No.LAH25-NP
BrandLEM
TWD772.00
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. 169-7652
Mfr. Part No.CSLA1CF
BrandHoneywell
TWD817.70
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. 121-8178
Mfr. Part No.CSLA2EL
BrandHoneywell
TWD1,745.00
Each
units
- - 20 Maximum of 550A 6 → 12 V dc - - Hall Effect PCB Mount - - - -25°C CSL
RS Stock No. 497-097
Mfr. Part No.HTR 500-SB
BrandLEM
TWD4,952.00
Each
units
- Open Loop ±1000A - 12 → 15 V - - Hall Effect Busbar, Panel Mount DC to 10 kHz ±2 % 21mm -10°C HTR
RS Stock No. 206-2432
Mfr. Part No.HAL 400-S
BrandLEM
TWD1,510.00
Each
units
- Open Loop ±1000A - 15 V - - Hall Effect Panel Mount DC to 50 kHz ±1 % 20 x 15mm -25°C HAL
RS Stock No. 337-2724
Mfr. Part No.2814731
TWD17,582.00
Each
units
- - 0 → 11A 0 → 20mA 20 → 30 V dc - - - Chassis Mount 15 → 400 Hz <0.5 % - -20°C MCR-S-1-5-UI-SW-DCI-NC
RS Stock No. 715-7989
Mfr. Part No.2308030
TWD9,816.00
Each
units
- - 0 → 200A 4 → 20mA 20 → 30 V dc - - - DIN Rail 20 → 6000 Hz ±1 % 32mm -40°C MCR-SL-CUC-200-I
RS Stock No. 499-5362
Mfr. Part No.LTSR 15-NP
BrandLEM
TWD661.00
Each
units
- Closed Loop 0 → ±48A - 5 V - - Hall Effect PCB Mount DC 100 to 200 kHz ±0.2 % 3.2mm -40°C LTSR
RS Stock No. 919-4707
Mfr. Part No.LF 2010-S
BrandLEM
TWD8,162.00
Each
units
- Closed Loop ±3000A ±0.6A ±14.25 → ±25.2 V - - - Panel Mount 150 kHz ±0.3 % - -40°C LF
RS Stock No. 497-182
Mfr. Part No.HASS 50-S
BrandLEM
TWD700.00
Each
units
- Open Loop ±150A - 5 V - - Hall Effect Panel Mount DC to 50 kHz ±1 % 20.4 x 10.4mm -40°C HASS
RS Stock No. 452-9325
Mfr. Part No.DK 400 B10
BrandLEM
TWD10,684.00
Each
units
- - 400A - 20 → 50 V dc, 22 → 38 V ac - - - Panel Mount - ±1 % 21.7mm -20°C DK
RS Stock No. 198-829
Mfr. Part No.AT 20 B5
BrandLEM
TWD1,932.00
Each
units
- - 20A - - - - - Cable Tie 50/60 Hz ±1.5 % 16mm -20°C AT
RS Stock No. 321-6309
Mfr. Part No.LAH 100-P
BrandLEM
TWD792.00
Each
units
- Closed Loop 100A 50mArms 12 → 15 V - - Hall Effect PCB Mount DC to 200 kHz ±0.25 % - -25°C LAH
RS Stock No. 499-5564
Mfr. Part No.AP 50 B420L
BrandLEM
TWD4,747.00
Each
units
- - 50A 4 → 20mA 12 → 24 V dc - - - DIN Rail 30 → 2000 Hz ±1 % 18mm -20°C AP
RS Stock No. 446-0591
Mfr. Part No.DK 100 B10
BrandLEM
TWD14,334.00
Each
units
- Open Loop 100A - 20 → 50 V dc - - Hall Effect Panel Mount - ±2 % 21.7mm -20°C DK
RS Stock No. 522-002
Mfr. Part No.HAT 800-S
BrandLEM
TWD2,043.00
Each
units
- Open Loop ±2400A - 15 V - - Hall Effect Busbar, Plug In DC to 25 kHz ±1 % 40.5 x 30.5mm -10°C HAT
RS Stock No. 532-9160
Mfr. Part No.HAIS 200-P
BrandLEM
TWD854.00
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. 169-7654
Mfr. Part No.CSLA2EL
BrandHoneywell
TWD1,333.30
Each (In a Box of 50)
units
- - - Maximum of 550A 6 → 12 V dc - - Hall Effect PCB Mount - - - -25°C CSL