Toroidal Transformers

Download the Toroidal Transformers catalogue and see information about this and other products.

Toroidal Fixed Transformer Rft-o

The toroidal fixed transformer in open design as a mains, auto, safety or isolation transformer


Toroidal fixed transformers have significant advantages over conventional transformers: their construction results in up to 50% less volume and low weight. Since the ring cores have almost no air gap, only a very low magnetic stray field is produced and the transformers are almost hum-free. The change in secondary voltage between idling and full load is much smaller than with transformers with a nested core.


  • Adaptation of mains voltage to different output voltages
  • No humming
  • Low magnetic stray field
  • Low voltage drop
  • Minimum overall weight
  • Small dimensions
  • Connection with free wire or stranded wires
  • Mounting set available as an accessory
  • Standards: EN 61558; EN 60601

*Special voltages and higher powers on request


Suitable for this product

High Current Transformer

High-current Transformers Enable The Simple Transformation Of Very Small Primary Currents Into Very High Secondary Currents.

Housing And Interference Suppression Transformer

A Damping Of Up To 90 Db Is Achieved With Specially Wound Isolating Transformers In Segregated Windings Due To The Low-capacitance Design And An...