25mm Toroidal, Solid-core Current Transformer, 600V

Toroidal Current Transformer The CTT series of toroidal, solid core current transformers provide highly accurate, non-contact step-down transformation of the AC primary current to a level appropriate for micro-processor based circuits. These solid core current transformers feature high over current measurement capability over a broad frequency range under harsh environmental operating conditions.

Accuracy Class with given Burden
Current Ratio2.5VA5.0VA12.5VA22.5VA50.0VA
50A : 5A3.0
60A : 5A3.0
75A : 5A3.03.0
80A : 5A3.03.0
100A : 5A1.03.0
120A : 5A1.01.0
125A : 5A1.01.0
150A : 5A0.51.02.0
200A : 5A0.51.01.0
250A : 5A0.20.51.0
300A : 5A0.


  • Input Frequency: 50 to 400HZ
  • Accuracy Class: Compliant with IEC60044-1 Part 1, Current Transformers Class 0.2, 0.5, 1.0, 2.0
  • Operating Voltage: 600 Vac
  • Isolation Voltage: 10,000Vac for 1 minute
  • Operating temperature:
    • -25ºC to +55ºC Standard
    • -40ºC to +85ºC Optional
  • CE Approved
  • RoHS Compliant
  • Download CTT2511 Data Sheet (pdf 627kb)

    Mounting Styles:

    Standard Sizes:

    Many of our products can be designed and manufactured to meet the specific application requirements. For a no obligation technical evaluation, contact us with your specific performance requirements.