GE 339 | Motor Protection System

GE 339 | Motor Protection System

Complete protection, control, diagnostics and communications for small and medium sized AC motors. Designed for medium voltage motors in industrial applications, the 339 delivers unparalleled protection, control, diagnostics and communications in an industry leading draw-out construction. The 339 Motor Protection System provides simplified setup configuration through the use of the Motor Settings Auto-Configurator, advanced graphical diagnostics with the Motor Health Report and support for multiple communication protocols including IEC 61850. This 3 Series relay is available with draw out or non draw out options.


  • Small to Medium sized Medium Voltage AC Motors
  • Protection of pumps, conveyors, fans, compressors, etc.
  • Applications requiring fast and secure communications
  • Harsh environments requiring protection against corrosive chemicals and humid environments

Key Benefits

  • Enhanced Thermal Model including RTD and current unbalance biasing providing complete motor protection
  • Detailed Motor Health Report providing critical motor data simplifying motor analysis
  • Increase process uptime by trouble shooting problems faster with time stamped event reports, waveform capture, motor start and motor trending
  • Increase security and reduce potential system risks with the Security Audit Trail capturing setting and command changes
  • Powerful communication capabilities allowing seamless integration into most communication architectures
  • Easy access to information via multiple communication network options including USB, Serial, Fiber & copper Ethernet
  • Eliminate FT switches, needed for testing with the unique draw-out construction
  • Reduced wiring with support for remote RTD's
  • Reduce setup and configuration time with the Simplified Motor Setup screen
  • Customized motor overload curve using Flex curves
  • Draw out and non draw out options available

Functional Block Diagram

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