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(800) 990-5685

508-999-5685 | 103 Popes Island New Bedford, MA 02740

Automatic Transfer Switch

Automatic Transfer Switches by R.A. MITCHELL

Thomson Power Systems

Thomson Power Systems manufactures a complete lineup of Automatic Transfer Switches ranging from 100A to 4000A.


  • Factory-tested to ensure transfer of power from the utility to the generator and back again.
  • Find the perfect option for every application, from 30 to 4000 amps

GE Zenith

To maintain a continuous supply of power, GE Zenith Automatic Transfer Switches ranging from 100A to 4000A are available for a seamless transition between a primary power source and a secondary power source. 

Client Reviews

"Lowest prices on parts. Best service. Very knowledgeable regarding diesel engine repair. Very friendly too."

Leonard Curcuru

"Been going here for service for just about 20 years now. John and the guys there are the best and their business at what they do. They have a great boss in Mr. Mitchell also."

Mike Goodman

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