3 Phase Rogowski Coil RCS-1800 by Magnelab


All RCS units require Active Power

All RCS units require Active Power

Product Description

Magnelab’s RCS-1800 is a 3 Phase Rogowski Coil that transforms an AC input current up to 5000 Amps to a 0.333 Volt output.

The RCS-1800 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. The integrator requires a DC power supply that operates between 9 and 36 Vdc.

The RCS-1800, 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-1800-250, which is the 250A version, will be 1% accurate from 25A to 325A.  The RCS-1800 has three lengths, each 18″ long (~6″ opening).

The RCS-1800 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-1800-000 (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-1800-000.

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

To see all 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 an add-on
  • 18″ Rope Length (~6″ diameter)
  • 8 ft. Insulated leads (from Rope to integrator)
  • 8 ft. Output leads twisted pair (600V) – 3 sets
  • Maximum Voltage: 600 V (on bare conductor)
  • 7-Year Warranty

Data Sheets

 Technical Specs
 Rope Installation Instructions
 Rope Positional Accuracy



UL Registered


Made in USA

ISO 9001

rohs compliant

Additional information

Weight1.5 lbs
Dimensions10 x 9 x 2 in