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. 522-030
Mfr. Part No.AT 5 B420L
BrandLEM
SGD110.02
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. 286-361
Mfr. Part No.LV 25-P
BrandLEM
SGD105.84
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. 521-992
Mfr. Part No.LF 205-S/SP3
BrandLEM
SGD106.97
Each
units
Closed Loop 0 → 200A 100mArms 12 → 15 V - Hall Effect Panel Mount DC to 100 kHz ±0.5 % 15.5mm -40°C LF +85°C 26.19mm
RS Stock No. 198-807
Mfr. Part No.AT 10 B10
BrandLEM
SGD83.86
Each
units
- 10A - - - - Cable Tie 50/60 Hz ±1.5 % 16mm -20°C AT +60°C 36.5mm
RS Stock No. 189-5477
Mfr. Part No.CSNE151
BrandHoneywell
SGD54.26
Each
units
Closed Loop 5 → 36A 25mA 15 V - Hall Effect PCB Mount DC to 150 kHz ±0.5 % - 0°C CSN +70°C 16.8mm
RS Stock No. 497-378
Mfr. Part No.AT 50 B10
BrandLEM
SGD128.89
Each
units
- 50A - - - - Cable Tie 50/60 Hz ±1.5 % 16mm -20°C AT +60°C 36.5mm
RS Stock No. 286-311
Mfr. Part No.LA 25-NP
BrandLEM
SGD38.53
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. 180-7357
Mfr. Part No.LA 55-P
BrandLEM
SGD38.69
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. 497-221
Mfr. Part No.LA 25-P
BrandLEM
SGD58.71
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. 451-1324
Mfr. Part No.LA 100P/SP13
BrandLEM
SGD38.76
Each
units
Closed Loop 0 → 160A 100mArms 12 → 15 V - Hall Effect PCB Mount DC to 200 kHz ±0.7 % 12.7 x 7mm -25°C LA +70°C 14.45mm
RS Stock No. 302-6077
Mfr. Part No.2814359
SGD456.39
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. 198-841
Mfr. Part No.AT 5 B5
BrandLEM
SGD89.82
Each
units
- 5A - - - - Cable Tie 50/60 Hz ±1.5 % 16mm -20°C AT +60°C 36.5mm
RS Stock No. 919-4696
Mfr. Part No.LF 210-S
BrandLEM
SGD82.80
Each
units
Closed Loop ±420A ±0.21A ±11.4 → ±15.75 V - - Panel Mount 100 kHz ±0.2 % - -40°C LF +85°C 24.2mm
RS Stock No. 207-2877
Mfr. Part No.HTA 100-S
BrandLEM
SGD101.60
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. 181-2129
Mfr. Part No.CSLA2CD
BrandHoneywell
SGD32.97
Each
units
Open Loop 0 → 72A - 6 → 12 V dc - Hall Effect PCB Mount - - 10.9mm -25°C CSL +85°C 10.4mm
RS Stock No. 198-835
Mfr. Part No.AT 20 B10
BrandLEM
SGD103.23
Each
units
- 20A - - - - Cable Tie 50/60 Hz ±1.5 % 16mm -20°C AT +60°C 36.5mm
RS Stock No. 337-2724
Mfr. Part No.2814731
SGD840.40
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 +60°C 114.5mm
RS Stock No. 715-7989
Mfr. Part No.2308030
SGD469.21
Each
units
- 0 → 200A 4 → 20mA 20 → 30 V dc - - DIN Rail 20 → 6000 Hz ±1 % 32mm -40°C MCR-SL-CUC-200-I +65°C 33.8mm
RS Stock No. 207-2984
Mfr. Part No.LA 205-S
BrandLEM
SGD151.13
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
RS Stock No. 521-936
Mfr. Part No.HASS 400-S
BrandLEM
SGD36.30
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
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