Majestic Transformer Co. specialises in the design and manufacture high quality bespoke and custom built electrical transformers

Custom Built Transformers

  • Single phase transformers up to 50kVAtick
  • Three phase transformers up to 125kVAtick
  • Auto transformers up to 500kVAtick
  • Transformer rectifier units up to 100kVAtick
  • High frequency transformerstick
  • Audio output transformerstick
  • Inductors and smoothing chokestick
  • Custom built transformer rectifier power suppliestick
  • Medical isolation transformerstick

Single Phase Open Frame Control Transformers


Typical applications for this type of electrical transformer are motor control, machine tool control, control panels, alarm systems, distribution boards etc. The transformers can be step down and step up, or isolation, supplied as open types with universal frames for vertical or horizontal mounting with either terminal blocks, rail terminals or nickel plated brass stud connections.

A wide range of supply voltages can be accommodated on the primary windings at any frequency, typically 50 Hz, 60 Hz, or 400 Hz. In addition, multiple secondary windings can be accommodated anything from a few volts up to several thousand volts. Currents from a few milliamps up to several thousands amps. Complex or high voltage windings may require a larger frame size to be used to accommodate the windings and insulation. Transformers in this range can also have fuses fitted on the top panel.

If you are looking for a quality Single Phase Transformer, please contact our SALES OFFICE to discuss your requirements.

TOTAL SEC VA RATING SIZE (in mm)
W x D x H
Dispatch Within
20VA 66 x 51 x 75 7/10 days
50VA 67 x 67 x 100
100VA 84 x 102 x 122
200VA 99 x 102 x 141
250VA 114 x 115 x 157
500VA 114 x 153 x 157
750VA 140 x 152 x 188
1kVA 140 x 178 x 188
2kVA 165 x 170 x 220 10/14 days
4kVA 196 x 210 x 260
6kVA 196 x 260 x 260
9kVA 356 x 230 x 340 2/4 weeks
20kVA 356 x 280 x 340
30kVA 356 x 360 x 340


These transformers are also available with enclosures for wall mounting or floor standing
- see Industrial Cased Transformers Single Phase.


Please contact our SALES OFFICE for full details of our Single Phase Transformers.