4-20 mA Rogowski Coil – MGS-1800 by Magnelab


10 - 24$10 / item
25 - 49$20 / item
50 - 99$35 / item
100 - 249$50 / item
250 - 499$62 / item
500 -$75 / item

3-phase 250-5000 Aac input : 4-20 mA output. 6″ opening. Flexible.

SKU: MGS-1800
Product Description

Magnelab’s MGS-1800 is a 3 phase 4-20 mA Rogowski Coil kit. Each phase handles up to 5000A and outputs a corresponding 4-20 mA signal.

The 4-20 mA Rogowski coil kit comes with three 18-inch long Rogowski coils (~6 inch diameter) and the corresponding integrator unit. The MGS-1800 is powered from the 4-20 mA DC loop circuit, and in most cases a loop voltage of 8 VDC is sufficient to power the device.  However, if you are using a shunt in the current loop to generate a detectable voltage (e.g. 250 Ohm), you must take the voltage drop across the shunt into account. Of course you may also provide additional voltage to the 4-20 mA DC loop if necessary.

This 4-20 mA Rogowski coil is 1% accurate, making it a great choice for control applications.

As you’d expect with a 4-20 mA device, the unit outputs 4 mA DC current when no AC current is detected on the primary, and it outputs 20 mA when the full rated current is detected.

The integrator unit on the coil has an LED that lights up when the 4-20 mA circuit is complete and sufficiently powered. This makes it easy to ensure a fault condition doesn’t exist and helps you know that the unit is working properly.

To see all Rogowski coil options visit our Rogowski Coil Product Page. You can view all of our current sensors here.


  • True RMS measurement. Ideal for distorted Waveforms
  • Self powered from 4 – 20 mA Loop (at least 8-35 Vdc required)
  • LEDs on each phase indicate when unit is connected to suitable power
  • Input: 250 to 5,000 Amp (or custom amperage)
  • Accuracy +/-1%
  • 8 ft. Insulated leads (from RopeCT to integrator)
  • 8 ft. Output leads twisted pair (600V), three sets
  • Maximum Voltage: 600 V (on bare conductor)
  • UL Recognized, CE and RoHS compliant
  • 7-Year Warranty

Data Sheets

Technical Specs
Rope Installation Instructions
Rope Positional Accuracy


UL Registered


Made in USA

ISO 9001

rohs compliant

Additional information

Weight1.225 lbs
Dimensions12 x 9 x 1.5 in