ZTX Standard (Open) Transition
The Zenith ZTX Series of transfer switches is built for residential and light commercial critical/non-life safety applications requiring the dependability and ease of operation found in a power contactor switch. The ZTX transfer switches are designed for standby applications, and incorporate a double-throw, mechanically interlocked contactor mechanism.
GTX Series Standard (Open transition) CCC certified
 The Zenith GTX Series of automatic transfer switches (ATS) is built light commercial critical/non-life safety applications requiring the dependability and ease of operation found in a power contactor switch. The GTX transfer switches are designed for standby applications, and incorporate a double-throw, mechanically interlocked contactor mechanism.
Automatic transfer Switches
Momentary loss of electric power to mission critical loads can endanger life, cause severe financial losses, or both. Todays 7x24 service centers, data warehouses and critical healthcare facilities demand more than just continuity of power. The quality of power delivered to the load, the effectiveness of periodic system testing and the ability to diagnose outages and disturbances in the electrical system are issues that have serious implications for critical facilities.