FRER
Current transformers (CT) and voltage transformers (VT) are designed to work in conjunction with measurement instruments and protection devices, ensuring reliability, safety, and accuracy.
- Standard operating voltage: 0.72 kV
- Operating frequency: 50–60 Hz
- Primary CT currents: from 1 A to 8,000 A
- Standard secondary currents: 1 A or 5 A
- Primary VT voltages: from 100/√3 V to 1,200 V
- Secondary VT voltages: 100 V or 100/√3 V (other values upon request)
Available in versions designed for installation inside industrial or civil buildings, with thermal class E (higher classes available upon request).
The transformers can be mounted:
- Directly on primary busbars or cables
- On DIN rails or with mounting feet
Upon request, snap-on terminal covers are available for most models. In cases where these are not compatible, screw fastening is provided.
Each transformer is supplied with complete accessories for wiring and mounting, packaged in a dedicated individual box.
The line includes
Openable CTs
Measurement CTs – cl. 0.5
Precision CTs – cl. 0.2/0.5s/0.2s
Protection CTs – cl. 5p5/5p10/5p15/5p20
CTs with UL certification
Fully customizable CTs
Summing CTs
Ratio correction CTs
Saturable CTs for thermal relays
CTs for electronics
Measurement CTs with bar or cable pass-through, 333 mV output





