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. 919-4700
Mfr. Part No.LF 510-S
BrandLEM
HK$517.31
Each
units
Closed Loop ±800A ±0.16A ±14.25 → ±25.2 V - - Panel Mount 200 kHz ±0.6 % - -40°C LF +85°C 40.6mm
RS Stock No. 286-361
Mfr. Part No.LV 25-P
BrandLEM
HK$619.23
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. 499-5378
Mfr. Part No.LTSR 25-NP
BrandLEM
HK$168.52
Each
units
Closed Loop 0 → ±80A - 5 V - Hall Effect PCB Mount DC 100 to 200 kHz ±0.2 % 3.2mm -40°C LTSR +85°C 10mm
RS Stock No. 793-4613
Mfr. Part No.DVL 1000
BrandLEM
HK$1,656.43
Each
units
- - 50mA ±15 → 24 V - - Panel Mount 14 kHz ±0.5 % - -40°C DVL +85°C 100mm
RS Stock No. 446-0614
Mfr. Part No.DK 100 B420
BrandLEM
HK$4,092.20
Each
units
Open Loop 100A 4 → 20mA 20 → 50 V dc - Hall Effect Panel Mount - ±2 % 21.7mm -20°C DK +50°C 30.2mm
RS Stock No. 435-8735
Mfr. Part No.HX 20-P/SP2
BrandLEM
HK$99.87
Each
units
Open Loop ±60A - 12 → 15 V - Hall Effect PCB Mount 50 kHz ±1 % 1.6mm -25°C HX +85°C 15.4mm
RS Stock No. 532-9211
Mfr. Part No.HTFS 200-P/SP2
BrandLEM
HK$208.28
Each
units
Open Loop ±300A - 5 V - Hall Effect PCB Mount DC to 50 kHz ±1 % 22mm -40°C HTFS +105°C 17mm
RS Stock No. 302-6077
Mfr. Part No.2814359
HK$2,410.42
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. 451-1368
Mfr. Part No.LF 305S
BrandLEM
HK$511.29
Each
units
Closed Loop 0 → 300A 150mArms 12 → 20 V - Hall Effect Panel Mount DC to 100 kHz ±0.5 % 20.1mm -40°C LF +85°C 26.6mm
RS Stock No. 180-7357
Mfr. Part No.LA 55-P
BrandLEM
HK$224.97
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. 451-1403
Mfr. Part No.LF 2005S
BrandLEM
HK$3,110.60
Each
units
Closed Loop 2000A 400mArms 15 → 24 V - Hall Effect Panel Mount DC to 100 kHz ±0.3 % 60.5mm -40°C LF +85°C 52mm
RS Stock No. 497-211
Mfr. Part No.LTSP 25-NP
BrandLEM
HK$193.54
Each
units
Closed Loop 25A 12mA 4.75 → 5.25 V - Hall Effect PCB Mount >300 kHz ±2.7 % - -40°C LTSP +85°C 10mm
RS Stock No. 286-311
Mfr. Part No.LA 25-NP
BrandLEM
HK$222.45
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. 521-992
Mfr. Part No.LF 205-S/SP3
BrandLEM
HK$650.27
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. 446-0608
Mfr. Part No.DK 200 B10
BrandLEM
HK$3,557.04
Each
units
Open Loop 200A - 20 → 50 V dc - Hall Effect Panel Mount - ±2 % 21.7mm -20°C DK +50°C 30.2mm
RS Stock No. 650-560
Mfr. Part No.CSLA1CF
BrandHoneywell
HK$279.47
Each
units
Open Loop 0 → 100A - 8 → 16 V dc - Hall Effect PCB Mount - - 10.9mm -25°C CSL +85°C 10.4mm
RS Stock No. 436-2330
Mfr. Part No.LTS 6NP
BrandLEM
HK$160.81
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. 181-2129
Mfr. Part No.CSLA2CD
BrandHoneywell
HK$182.74
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. 522-008
Mfr. Part No.HAT 600-S
BrandLEM
HK$522.30
Each
units
Open Loop ±1800A - 15 V - Hall Effect Busbar, Plug In DC to 25 kHz ±1 % 40.5 x 30.5mm -10°C HAT +80°C 37mm
RS Stock No. 169-7652
Mfr. Part No.CSLA1CF
BrandHoneywell
HK$200.40
Each (In a Box of 50)
units
Open Loop 0 → 100A - 8 → 16 V dc - Hall Effect PCB Mount - - 10.9mm -25°C CSL +85°C 10.4mm
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