Majestic Transformer Co Supplier, Designer, and Manufacturer of Custom Built Transformers, Chokes, and Associated Power Supplies
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Open Frame Control Transformers Three Phase


3 Phase Control Transformer Typical applications for this type of transformer are motor control, machine tool control, control panels, machine voltage conversion, distribution boards etc. The transformers are supplied as open types with universal frames for vertical or horizontal mounting and either terminal blocks or brass stud connections.

Virtually any combination of voltage and current, at 50Hz, 60Hz or 400Hz, can be supplied on both primary and secondary. In addition, multiple primary and secondary windings can be accommodated. Complex or high voltage windings may require a larger frame size to be used to accommodate the
windings. Transformers in this range can also have fuses fitted on the top panel.

TOTAL SEC VA RATING SIZE (in mm)
W x D x H
Dispatch Within
30VA 100 x 70 x 88 7/10 days
75VA 120 x 75 x 110
210VA 140 x 100 x 120
360VA 185 x 100 x 160
540VA 215 x 100 x 180
900VA 254 x 115 x 200
1350VA 270 x 115 x 220
2250VA 310 x 135 x 245
3.25kVA 416 x 135 x 310 10/14 days
7.2kVA 416 x 180 x 310
12kVA 416 x 240 x 310
18kVA 565 x 220 x 445 2/3 weeks
30kVA 565 x 275 x 445
50kVA 565 x 325 x 445

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


Please contact our SALES OFFICE for full details.