Low-Voltage Automatic Transfer Switches

GE Zenith’s ZTG Series switches are built for standard applications requiring the dependability and ease of operation found in a power contactor switch.
STSMain Functions:

  • Ratings 40 to 3000 amps (2, 3 or 4 poles)
  • UL 1008 listed at 480 VAC • CSA certified at 600 VAC ( 200-260 amp - 480V )
  • IEC listed at 480 V
  • Double throw, mechanically interlocked contactor mechanism
  • Electrically operated, mechanically held
  • Designed for emergency and standby applications
  • Available in standard ( ZTG ) or delayed transition ( ZTGD ) models

ZTG switches are equipped with GE Zenith’s next-generation MX 150 microprocessor panel, which controls the operation and displays the status of the transferswitch’s position, timers and available sources. As an embedded digital controller, the MX 150 offers high reliability and ease of unattended operation across a range of applications.
The MX 150 features include:

  • Timer and voltage/frequency settings adjustable without disconnection from the power section
  • Built-in diagnostics with an LCD display for immediate troubleshooting
  • LED/LCD indicators for ease of viewing and long life
  • Nonvolatile memory—clock battery backup not required for standard switch operation
  • Processor and digital circuitry isolated from line voltage
  • nputs optoisolated for high electrical immunity to transients and noiseI
  • Communications network interface