The Middleby Marshall 44687 Motor is a high performance oven component is suitable for models PS536GS, PS540E, and PS540G. It has a 1/2 HP power output and works at 1725/1425 RPM, it comes with a 115V and 200-230V power input option for ease of use. https://www.partsfe.co.uk/middleby-marshall-44687-motor