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US Electrification
Automatic Transfer Switches
GTX Series - Standard (Open transition) CCC certified
Industrial Solutions

GTX Series - Standard (Open transition) CCC certified


The Zenith GTX Series of automatic transfer switches (ATS) are built for 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.


The GTX transfer switches are equipped with the MX90 Microprocessor Control Panel.



This microprocessor includes:


  • Undervoltage sensing (90% pickup/80% dropout) of the utility source
  • Voltage and frequency sensing of the generator source (90% voltage/95% frequency pickup)
  • Time Delay Engine Start - 5 seconds (P)
  • Time Delay Engine Warmup - Transfer to Generator - 20 seconds (W)
  • Time Delay Utility Stabilization/Retransfer to Utility - 5 minutes (T)
  • Time Delay Engine Cool Down - 5 minutes (U)
  • Indicating LEDs for power availability, switch position and load energized
  • Pushbuttons for test, engine start (manual), generator exerciser, timer bypass and program cancel
  • Special status annunciation of in-phase transfer and timer operation
  • Selectable 7, 14, 21 or 28 day (factory set 28 days) generator exerciser timer
  • Diagnostic LED indications in logical one-line configuration All time delays are fixed.

The unit is available in open type, NEMA 1 or NEMA 3R enclosures. Additional options include:


  • A3/A4 Auxiliary contacts (1 each) closed in utility and generator positions
  • Integrated battery charger 1.5A/12V

Product Scope

  • Ratings 40 to 400 amps
  • 120/380V, 208/416V, 50/60Hz
  • CCC Certified
  • Compiles to GB/T 14048.11-2008
  • Double throw, mechanical interlocked contractor mechanism
  • Electrically operated, mechanically held
  • Designed for standby applications


Service Offering

  • GE is a global leader in innovative technology, service and support to the power quality industry.
  • Toll-Free 7x24 Customer Service Call Center @ 1-800-820-8206
  • For replacement Parts, call 1-800-820-8206 or email
  • Remote Monitoring and Diagnostics
  • For extended warranty and full-coverage service contracts, call 1-800-820-8206 or email


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