333 mV Output Current Transformer – SCT-3000 by Magnelab

400-3000 Aac input : 333 mVac output. 3″x5″ opening

Product Description

Magnelab’s SCT-3000 is a 333 mV Output Current Transformer that converts an AC input current up to 3000 Amps to a 0.333 Volt output.

The SCT-3000 is a 333 mV output current transformer with a 3″ opening and a variety of amperage rating options. The SCT-3000 is ideal for installation on existing electrical wiring by snapping around the conductor. The SCT series have a self-locking mechanism and no hinges, making them durable and reliable.

Frequent Applications

  • Data logging
  • Recording
  • Power monitoring
  • Energy management
  • Cost allocation

The SCT-3000, like other 333 mV output current transformers, is used to determine the current (measured in Amps) passing through a conductor (wire, bus bar, etc). This is needed, along with the voltage, to determine the amount of power being used (measured in kW). Click here for more information on monitoring.

As with most of Magnelab’s standard accuracy current sensors, the SCT-3000 is 1% accurate when operating from 10% to 130% of the rated input current.

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


You can view all of our current sensors here.


  • Rated input up to 3000 Amp
  • Output of 0.333 Volt at rated current
  • Linearity accuracy +/- 1%
  • Accuracy at 10% to 130% of rated current
  • Phase angle < 2 degrees measured at 50% rated current
  • Operates from 50 Hz to 400 Hz
  • 8 ft. twisted-pair lead
  • Maximum Voltage: 600 V (on bare conductor)
  • UL recognized, CE and RoHS compliant
  • 7-Year Warranty

Data Sheet

 Technical Specs


UL Registered


Made in USA

ISO 9001

rohs compliant

Additional information

Weight2.55 lbs
Dimensions5.75 x 7.5 x 2 in