(+ 44) 2085462388 | Sales@motorun.co.uk

Motorun Phase Converters
Specialists in Single Phase to Three Phase Conversion

Convertors 10-60 Hp



Designed for multi-motor applications and non-rotating 3-Phase loads e.g. Welders, 3-Phase transformers . Suitable for full factory use to support any number of motors or machines which may be used in any combination - with no adjustment required at the phase converter. Rotary models comprise of a static controller and a balancing motor that has no shaft extension and is completely enclosed.

We incorporate a unique "soft start system" that brings the balancing motor to full speed with the minimum of input current.
For example: a 20 HP rotary will draw approx. 15-20 Amps for 3-4 seconds to reach full speed, the off-load current is only 4-5 amps from a 230v single phase supply.

When selecting a Rotary converter, the largest motor to be used should not exceed 50% of the Converter capacity, i.e. For the 20 HP unit the largest single motor should not exceed 10 HP. Smaller motors can be run simultaneously up to 20 HP.

MOT Testing Station consisting of the following equipment:

  • 3 HP Car Lifts (2 off)
  • 3 HP Air Compressor
  • 2 x 4HP on a Class 4 Rolling Road
  • 250 Amp Welder
  • 1 HP Tyre Balancing machine
  • Plus other small motors, drills, grinders


Our 20 HP Rotary Phase Converter can be used for all of the above equipment in any combination.

Joinery Workshop consisting of the following equipment:

  • 5 HP Cross cut saw
  • 4 HP Panel saw
  • 7.5 HP Planner
  • 4 HP Spindle motor 5 HP Sander


Our 30 HP Rotary Phase Converter can be used for all of the above equipment in any combination.