ABB ATS - Zenith ZTS Series


The Zenith ZTS Series of automatic transfer switches (ATS) are built for business and industrial critical applications requiring the reliability and enhanced operation. The ZTS Series uses the MX250 microprocessor control system, which includes features specified for use in business and industrial critical applications. It also provides an intuitive user interface, communications capability and self diagnostics.

The ZTS Series is available in a full range of ampere, voltage and pole configurations, along with an extensive list of options and features.

  • Contact transfer speed less than 100 milliseconds
  • High close-in and withstand capability
  • Double throw, interlocked operation
  • Electrically operated, mechanically held by a simple, over-center mechanism
  • Segmented silver tungsten alloy contacts with separate arcing contacts on 600 amps and above
  • Arc quenching grids, enclosed arc chambers and wide contact air gap for superior source-to-source isolation on all units
  • Control circuit disconnect plug and drive inhibit switch for safe maintenance
  • Components accessible for inspection and maintenance without removal of the switch or the power conductors
  • Mechanical indicator and contact chamber cover designed for inspection, safety and position designation
ZTS - Standard (Open) Transition

The Zenith ZTS transfer switch is used in general and mixed load applications.

ZTSD - Delayed Transition

The Zenith ZTSD transfer switch is used to transfer of motor loads, and transformers.

ZTSCT - Closed Transition

The Zenith ZTSCT transfer switch is used to transfer critical loads where a "no break" transfer is desired with this switch 100msec parallel capability.

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