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Automatic Transfer Switches

ABB's Automatic transfer switches (ATS) cover a variety of applications such as: Data Centers and Healthcare.  Automatic transfer switches (ATS) shift the load between two power sources (Primary and secondary load sources). Our ATS automatically sense and trigger when one of the sources has lost or gained power.

Zenith ATS - continuous power, non-stop innovation

TruONE ATS

TruONE™ ATS - A critical breakthrough for critical power.

TruONE ATS (automatic transfer switch) is the ATS for all applications while providing superior critical power security. TruONE incorporates switch and controller in one…

Zenith T-series Automatic Transfer Switches

Complete your critical power protection with the new Zenith T-series Service Entrance Rated ATS.
Rugged construction and flexible configurations for large commercial and industrial applications.
Built for mission-critical and emergency power systems. Zenith ATS' is available in 30-3000A, standard, delayed, and closed transition.
The ZBTS T-series is built for mission-critical and emergency power systems. It is available in 30-3000A, standard, delayed, and closed transition.

Zenith Medium Voltage Automatic Transfer Switches

Provides highly reliable and flexible source switching for essential healthcare equipment and business critical applications, including make-before break switching. 40-4000A…

Previous Generation ATS

Provides reliable, easy-to-operate source switching for small frame commercial and light industrial standby power applications. 40-400A and 120-480V.