Rogowski Coil Kit – RCS-100T by Magnelab


All RCS units require Active Power

All RCS units require Active Power

Product Description

Magnelab’s RCS-100T is a 3 phase Rogowski coil kit that transforms an AC input current up to 5000 Amps to a 0.333 Volt output.

The RCS-100T is a 3 phase Rogowski coil kit that comes with 3 RopeCTs (Rogowski Coils) and one integrator (signal conditioner) that converts the RopeCT voltage to 0.333 volt AC output. Each of the Rogowski coils has a 1 inch diameter.  Given that the material used for the coil is flexible, the diameter can be decreased to securely fasten around the conductor, or it can also be made slightly larger than 1 inch.  The integrator requires a DC power supply that operates between 9 and 36 Vdc.

The teardrop design of the RCS-100T allows for superior centering of the Rogowski coils (all Rogowski coils encounter small error if they are not perfectly centered). It is designed to allow a zip tie to be secured around the Rogowski coil, perfectly centering the primary conductor.

The RCS-100T, like other Rogowski coils, allows for very wide ranges of input currents.  The product is designed to operate from 10% to 130% of the rated current with 1% accuracy.  For example, the RCS-100T-250, which is the 250A version, will be 1% accurate from 25A to 325A.  The RCS-100T has three lengths, each 4″ long (~1″ opening).

The RCS-100T has these advantages in comparison to a traditional CT:

  • Greater linearity
  • High amperage measurement capability
  • Extremely flexible
  • Lightweight
  • Large circumferences available
  • No shorting block required

Compatible power meters accept a voltage input.  Look for meters on our website that start with this symbol:


If you are purchasing a Measurlogic, Veris or eGauge meter you do not need to purchase the RCS integrator (at least if ordered properly).  Instead, you can use QTY 3 of the passive RCT-100T-000 (that comes without the integrator) and save money.  If you are not using one of these 3 manufacturers, you will most likely need an integrator to compensate for the phase shift and low voltage output of the RCT-100T-000.

Note: The integrator requires a power supply of 9 to 36 Vdc, which is not included. You may purchase one here.

To see all the Magnelab “Tear Drop” Rogowski coil options click here.

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


  • Input: 250 Amp to 5,000 Amp (or custom amperage)
  • Output 0.333 V at rated current (up to 5 V available)
  • Accuracy +/- 1%
  • Phase angle < 0.5 degrees
  • 9-36 VDC Power supply required, available as option
  • 1″ Rope Diameter
  • 8 ft. Insulated leads (from RopeCT© to integrator)
  • 8 ft. Output leads twisted pair (600V) Three sets
  • Maximum Voltage: 600 V (on bare conductor)
  • 10-Year Warranty

Data Sheets

 Technical Spec



Made in USA

ISO 9001

rohs compliant


Additional information

Weight1.5 lbs
Dimensions12 x 9 x 1.5 in
Amp Rating

250, 400, 500, 800, 1000, 1500, 2000, 2500, 3000, 4000, 5000