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Rayleigh Instruments TAS250-EW easywire "Plug and Play" Three Phase Measuring Current Transformer - Patented Technology


  • Ranges: 800 to 1600A (330mV Secondary)
  • Cable aperture : 3 @ 54 x 50mm
  • Primary current : 800 to 1600A
  • 70mm hole centres
  • Accuracy Class 1
  • Housing Material Self extinguishing Nylon IEC185 classification VO according to UL-94
  • Weight : 1200g


This system is safer than using traditional current transformers because Easywire transformers incorporate the resistive shunts usually located within the power meter. This means that the secondaries are always loaded, therefore eliminating the possibility of dangerously high voltages developing during open circuit conditions

The TAS250-EW is a 215mm wide three phase measuring current transformer designed for use with the Easywire multifunction power meters. This current transformer has three 54 x 50mm holes and is available with primary currents from 800A to 1600A .

Internal safety circuitry is provided which automatically limits the output voltage to a safe level, allowing the transformer secondary to be left open circuit under load.

DIN rail mounting clip, Busbar mounting and fixing feet included.
The TAS250-EW uses the Easywire technology allowing much faster installation saving you time and money. Additionally, all our three phase phase current transformers have been designed with hole centres and apertures to fit most standard industrial circuit breakers.

Additional Information

Manufacturer Rayleigh Instruments


Product Name / Options Price (ex VAT)
TAS250-EW - easywire Three Phase Measuring CT - 800A/330MV Call for Prices

TAS250-EW - easywire Three Phase Measuring CT - 1000A/330MV Call for Prices

TAS250-EW - easywire Three Phase Measuring CT - 1250A/330MV Call for Prices

TAS250-EW - easywire Three Phase Measuring CT - 1600A/330MV Call for Prices

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