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 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. 793-4584
Mfr. Part No.HLSR 10-P
BrandLEM
$12.32
Each
units
Open Loop 25A 10A 4.5 → 5.5 V - Hall Effect PCB Mount 400 kHz ±1 % - -40°C HLSR +105°C 21mm
RS Stock No. 170-4590
Mfr. Part No.CDS4125ACC-KA
BrandSensitec
$52.976
Each (In a Tray of 50)
units
- 125A 6mA 5 V - AMR Effect PCB Mount DC to 400 kHz 0.8 % - -40°C CDS4000 +105°C 22mm
RS Stock No. 763-9787
Mfr. Part No.CDS4125ACC-KA
BrandSensitec
$55.06
Each
units
- 125A 6mA 5 V - AMR Effect PCB Mount DC to 400 kHz 0.8 % - -40°C CDS4000 +105°C 22mm
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 +80°C 30mm
RS Stock No. 731-5267
Mfr. Part No.HTA 200-S
BrandLEM
$146.10
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. 521-936
Mfr. Part No.HASS 400-S
BrandLEM
$25.36
Each
units
Open Loop ±900A - 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. 499-5570
Mfr. Part No.AP 100 B420L
BrandLEM
$284.26
Each
units
- 100A 4 → 20mA 12 → 24 V dc - - DIN Rail 30 → 2000 Hz ±1 % 18mm -20°C AP +60°C 55mm
RS Stock No. 497-334
Mfr. Part No.HOP 600-SB
BrandLEM
$215.66
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 +70°C 32.4mm
RS Stock No. 532-9110
Mfr. Part No.HXS 20-NP/SP30
BrandLEM
$13.01
Each
units
Open Loop ±60A - 5 V - Hall Effect PCB Mount DC to 50 kHz ±1 % - -40°C HXS +85°C 18.7mm
RS Stock No. 497-192
Mfr. Part No.HASS 200-S
BrandLEM
$36.12
Each
units
Open Loop ±600A - 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. 301-9473
Mfr. Part No.LTS 25NP
BrandLEM
$25.85
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. 497-401
Mfr. Part No.LAX 100-NP
BrandLEM
$30.11
Each
units
Closed Loop 0 → 160A 50mA 11.4 → 15.75 V - Hall Effect PCB Mount >300 kHz ±0.91 % - -40°C LAX +85°C 16.35mm
RS Stock No. 436-2330
Mfr. Part No.LTS 6NP
BrandLEM
$42.58
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. 170-4592
Mfr. Part No.CMS2050-SP3
BrandSensitec
$33.144
Each (In a Tray of 50)
units
- 50A - ±15 V - AMR Effect PCB Mount DC to 200 kHz ±0.8 % - -25°C CMS2000 +85°C 7.3mm
RS Stock No. 820-0431
Mfr. Part No.2904921
$614.65
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. 301-9495
Mfr. Part No.HAS 100S
BrandLEM
$36.08
Each
units
Open Loop ±300A - 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. 763-9807
Mfr. Part No.CMS2050-SP3
BrandSensitec
$26.17
Each
units
- 50A - ±15 V - AMR Effect PCB Mount DC to 200 kHz ±0.8 % - -25°C CMS2000 +85°C 7.3mm
RS Stock No. 499-5536
Mfr. Part No.AP 50 B10
BrandLEM
$324.72
Each
units
Closed Loop 50A - 24 V dc - - DIN Rail 30 → 2000 Hz ±1 % 18mm -20°C AP +60°C 55mm
RS Stock No. 914-5284
Mfr. Part No.CT132TRAN50A-4/20MA
BrandHOBUT
$94.69
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. 715-7970
Mfr. Part No.2308027
$437.67
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
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