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Contactor type automatic transfer switches

Eaton’s contactor type automatic transfer switches (ATS) are designed to quickly and reliably transition critical loads between preferred and alternate/generator power sources. Ideal for use in NFPA 70 emergency, legally required, optional standby, and critical operations systems that demand reliable performance.

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Continuous Current Rating
Up to 5000A
System Voltage Rating
Up to 600 Vac
System Frequency Rating
50/60 Hz

Core features

  • Available in open delayed, open in-phase, and closed transition types
  • Automatic and non-automatic modes of operation 
  • Includes an interlocked, double-throw power switch driven by a robust solenoid operating mechanism
  • Service entrance rated option available with Eaton’s Arcflash Reduction Maintenance System to reduce the incident energy levels for downstream equipment during periods of maintenance
  • Indoor and outdoor enclosure types
  • Listed to UL 1008 and CSA 22.2 No. 178

Finding the right ATS has never been easier

Learn about the broadest range of ATSs available in today’s critical power market

Transfer switch 101

Read our introductory guide to picking the right transfer switch for your environment

Intelligent monitoring and control

Discover the reliability, intelligence, and programming benefits of Eaton’s ATS controllers

Built with experience

With more than 100 years of experience, Eaton can engineer reliable solutions to meet the specific demands of your application—completely designed and customized to your needs

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