MGS-1800 Three-Phase Rogowski Coil Current Sensor, AC Input to 4-20 mA DC Output

Flexible Current Transformer RopeCT

18 inch Rogowski Coils 3-Phase


One moment…we are redirecting you to our partner, Aim Dynamics.

Magnelab Aimdynamics

Back to Magnelab

Buy Now
Via Distribution
Three-Phase Rogowski Coil Current Sensor, AC Input > 4-20 mA DC Output MGS-1800
We offer the best of both worlds

Quick turn-around of smaller quantities, as well as larger volume competitive pricing. Our offshore advantages include the lowest labor costs in the Western hemisphere, making our pricing competitive with suppliers anywhere!

An ISO 9001:2015 certified company

Magnelab’s MGS-1800 is a three-phase Rogowski coil (rope CT) with a 4-20 mA DC output. Essentially, it is an integrator, AC current transducer or signal conditioner that is designed to convert the Rogowski coil input voltage to a DC output of 4 to 20 milliamperes. In order to function properly, the transducer has to use a DC loop power supply, which can operate from 8 to 35 volts DC. The flexible CT device comes with integrated screw terminals. This allows it to be easily and safely installed. The MGS-1800 is very different from the MGC-1000 AC Current Sensor with 5 Amp Output, which is a single phase AC current sensor that converts AC current ranging from 30 to 300 amperes to an AC current output.

The MGS-1800 features include the fact that it is ideal for distorted waveforms, because it delivers true RMS measurement. Furthermore, the device is self powered from the 4 to 20 mA loop. Each phase has LEDs included, and these show when the unit has been able to connect to the right kind of power. The input of the device is either custom amperage or from 250 to 5,000 Amp. The accuracy is 1% either way. It comes with 8 foot of insulated leads as standard, from Rope CT to integrator. It also has 8 feet of output leads, which come in three sets of 600V twisted pairs for the three phase CT. The maximum voltage of the device on bare conductor is 600 V. It is CE and RoHS compliant, as well as being UL recognized and it comes with a 10 year warranty.


● Input from 250 to 5,000 Amps
● True RMS measurement. Ideal for distorted Waveforms
● Self-powered from 4 – 20 mA Loop
● LEDs on each phase indicate suitable power connected
● Three 18 inch [0.46 m] coils
● 8 ft. insulated RopeCT leads and 8 ft. twisted pair output leads (600V)
● Custom RopeCT lengths of 12″, 24″ or 36″ also available

Click on the upper red button to view/print the SPEC sheet.

Click here for Installation Instructions


MGS-1800-250 250 Amp
MGS-1800-400 400 Amp
MGS-1800-500 500 Amp
MGS-1800-800 800 Amp
MGS-1800-1000 1000 Amp
MGS-1800-1500 1500 Amp
MGS-1800-2000 2000 Amp
MGS-1800-2500 2500 Amp
MGS-1800-3000 3000 Amp
MGS-1800-4000 4000 Amp
MGS-1800-5000 5000 Amp
All Dimensions in Inches
E,0.190" (Diameter)