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. 793-4584
Mfr. Part No.HLSR 10-P
BrandLEM
$12.57
Each
units
- Open Loop 25A 10A 4.5 → 5.5 V - - Hall Effect PCB Mount 400 kHz ±1 % - -40°C HLSR
RS Stock No. 301-9502
Mfr. Part No.HAS 200S
BrandLEM
$43.67
Each
units
- Open Loop ±600A - 15 V - - Hall Effect Panel Mount DC to 50 kHz ±1 % 20.4 x 10.4mm -10°C HAS
RS Stock No. 521-936
Mfr. Part No.HASS 400-S
BrandLEM
$38.68
Each
units
- Open Loop ±900A - 5 V - - Hall Effect Panel Mount DC to 50 kHz ±1 % 20.4 x 10.4mm -40°C HASS
RS Stock No. 532-9110
Mfr. Part No.HXS 20-NP/SP30
BrandLEM
$13.21
Each
units
- Open Loop ±60A - 5 V - - Hall Effect PCB Mount DC to 50 kHz ±1 % - -40°C HXS
RS Stock No. 497-334
Mfr. Part No.HOP 600-SB
BrandLEM
$259.38
Each
units
- Open Loop ±900A - 12 → 15 V - - Hall Effect Busbar, Panel Mount DC to 8 kHz ±2 % 41 x 12.5mm -10°C HOP
RS Stock No. 731-5267
Mfr. Part No.HTA 200-S
BrandLEM
$149.63
Each
units
- Open Loop 200A - ±15 V - - Hall Effect Panel Mount DC to 50 kHz ±1 % 32mm -25°C HTA
RS Stock No. 499-5570
Mfr. Part No.AP 100 B420L
BrandLEM
$288.52
Each
units
- - 100A 4 → 20mA 12 → 24 V dc - - - DIN Rail 30 → 2000 Hz ±1 % 18mm -20°C AP
RS Stock No. 436-2330
Mfr. Part No.LTS 6NP
BrandLEM
$31.99
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
RS Stock No. 497-192
Mfr. Part No.HASS 200-S
BrandLEM
$36.67
Each
units
- Open Loop ±600A - 5 V - - Hall Effect Panel Mount DC to 50 kHz ±1 % 20.4 x 10.4mm -40°C HASS
RS Stock No. 497-401
Mfr. Part No.LAX 100-NP
BrandLEM
$43.48
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. 301-9473
Mfr. Part No.LTS 25NP
BrandLEM
$31.06
Each
units
- Closed Loop 0 → ±80A - 5 V - - Hall Effect PCB Mount DC 100 to 200 kHz ±0.2 % 3.2mm -40°C LTS
RS Stock No. 499-5536
Mfr. Part No.AP 50 B10
BrandLEM
$329.27
Each
units
- Closed Loop 50A - 24 V dc - - - DIN Rail 30 → 2000 Hz ±1 % 18mm -20°C AP
RS Stock No. 914-5284
Mfr. Part No.CT132TRAN50A-4/20MA
BrandHOBUT
$96.11
Each
units
- - 50A 4 → 20mA 15 → 30 V - - Loop Sensor DIN Rail 45 → 65 Hz Class 0.5 % 21mm -15°C CT132TRAN
RS Stock No. 198-762
Mfr. Part No.AT 10 B420L
BrandLEM
$187.25
Each
units
- - 10A 4 → 20mA 20 → 30 V dc - - - Cable Tie 50/60 Hz ±1.5 % 16mm -20°C AT
RS Stock No. 527-8523
Mfr. Part No.DHR 100 C10
BrandLEM
$379.13
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. 521-954
Mfr. Part No.HASS 600-S
BrandLEM
$37.09
Each
units
- Open Loop ±900A - 5 V - - Hall Effect Panel Mount DC to 50 kHz ±1 % 20.4 x 10.4mm -40°C HASS
RS Stock No. 301-9495
Mfr. Part No.HAS 100S
BrandLEM
$48.30
Each
units
- Open Loop ±300A - 15 V - - Hall Effect Panel Mount DC to 50 kHz ±1 % 20.4 x 10.4mm -10°C HAS
RS Stock No. 820-0431
Mfr. Part No.2904921
$589.50
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
RS Stock No. 715-7970
Mfr. Part No.2308027
$471.86
Each
units
- - 0 → 100A 4 → 20mA 20 → 30 V dc - - - DIN Rail 20 → 6000 Hz ±1 % 32mm -40°C MCR-SL-CUC-100-I
RS Stock No. 497-338
Mfr. Part No.AT 100 B420
BrandLEM
$201.58
Each
units
- - 100A 4 → 20mA 20 → 30 V dc - - - Cable Tie 50/60 Hz ±1.5 % 16mm -20°C AT
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