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ZTS T-series

Powered by TruONE™ technology, Zenith ZTS T-series automatic transfer switches incorporate switch and controller in one seamless, self-contained unit, reducing the number of wires and connections. This design saves room in the enclosure and minimizes the potential for connection failures. In addition, the design incorporates modular components to reduce downtime and service costs, and an optimum interface for advanced control, connectivity, and energy efficiency.


  • Predictive Maintenance: contact wear and temp monitoring - Standard
  • True Voltage Agnostic on 30-1200 A 
  • Modular All-in-one integrated TruONE Technology ATS for 1200 A and below
  • Traditional power contactor ATS with TruController
  • Field installable plug-and-play accessories
  • Enclosed contacts (1200 A and below)


Simplify business operations
The ZTS T-series is equipped with an intuitive full-color touchscreen HMI and is compatible with ABB-common EkipTM Connect software to ease commissioning and operation, maximize flexibility with a wide 200-480V range and an array of standard programmable functions and IO, and finally, simplify service with unique modular components that are easier to stock and replace in the field.

Maximize uptime
ZTS T-series is built for high performance and incorporates design elements for simple service. Taking it to the next level, this advanced ATS range takes a proactive outage mitigation approach by monitoring temperature and contact health 24/7 and alerting any anomalies, helping to ensure power keeps flowing.

Plan for a safe and sustainable future
The ZTS T-series lineup has unique advances in safety with faster switching and no line voltages connected at the door. Similarly, creating a sustainable operation is not just something owed to future generations, but a cultural shift becoming a key proposition of a successful business. ZTS leverages future-proof upgradability features and ABB AbilityTM Energy and Asset Manager to empower users to lower their carbon footprint.


  • Commercial buildings
  • Industrial buildings
  • Sports arenas
  • Airports
  • High-rise buildings
  • Education and government
  • Financial environments


  • cULus (UL 1008) listed
  • NFPA 70, 99, 101, and 110
  • IEEE 446 and 241
  • NEMA ICS 10
  • Seismic certified- IBC-2015 and IEEE-693-2005
  • UL 508
  • UL 50, NEMA 250, and NEMA ICS 6