1 AC Transformer

1 AC Transformer

The 1 AC Transformer is an A4 module that includes a single phase transformer with both primary and secondary sides are made of two identical separate windings. The 1 AC Transformer has a turns ratio of 1:5, when considering the totality of its primary and secondary windings. The 1 AC Transformer windings are polarized and the polarity of each winding is indicated by a small dot on the module front panel. A thermistor output allows monitoring of transformer temperature to prevent overheating.


  • 240 VA single phase transformer
  • Includes two identical, separate windings on the primary and secondary side
  • Total transformation ratio of 1:5
  • Protective conductor connection, 4 mm² minimum diameter and deliberately unmistakable with 4 mm safety plug connections to prevent mix-up

Technical data

  • Primary rating (2 windings): 24 V AC, max. 3 A each winding
  • Secondary rating (2 windings): 240 V AC, max. 0.3 A each winding
  • Frequency: 50/60 Hz
  • Nominal power: 144 VA
  • Thermistor: 10 kΩ, type 2
  • Designed for A4 mounting frames   
  • Dimensions (H x W x D): 297 x 133 x 140 mm
  • Weight: 3.6 kg