New TS 923 Commercial ATS in Stock.


Marathon Thomson Power Systems launches a new TS923 Series Automatic Transfer Switch.

Introducing the TS 923 series Automatic Transfer Switch [ATS] for the Commercial industry.  With extreme dedication and commitment from our team, the TS 923 went from concept to shipping within 3 months.


The TS 923 series is a 3 Pole ATS, ranging from 100 to 400 Amps.  Multi-voltage capable 120/208/220/240Vac @ 60/50Hz makes it ideal for many global applications.  It is housed in an aluminum enclosure to provide light weight and rust resistance.  Available in Standard or Service Entrance Rated, the TS 923 is certified to Underwriters Laboratories (UL) 1008 ATS Standard.


The switches are now available in stock, ready for shipment.  Field installable options include, Kilowatt Load Shedding, Universal Generator Kit, Heaters, Surge Protection, and NEMA3R door kits.


Please contact our Thomson Sales Department or your Thomson Territory Representative with any questions.



  Phone:  1-888-888-0110  dial 3

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