GE Fanuc 239-AN Motor Protection Relay High Quality

GE Multilin 239 Motor Protection Relay

Comprehensive Protection for Three-Phase AC Motors

Overview

The 239 relay is designed to provide comprehensive protection for three-phase AC motors and associated mechanical equipment. It guards against potentially damaging conditions, enables early warning before process faults escalate, and supports diagnostics and functional testing during maintenance. A Harsh Environment Conformal Coating option is also available for challenging operating conditions.

Key Features & Benefits

• Compact Design
  Saves space and reduces installation cost

• Enhanced Protection
  Advanced thermal modeling ensures more accurate motor protection

• Flexible Settings
  Multiple setpoint groups for adaptable configurations

• Simplified Testing
  Built-in simulation functions for easier commissioning and maintenance

• Asset Monitoring
  Supports optional RTD inputs for real-time temperature monitoring

• Easy Communication
  Modbus RTU™ support via RS485 for remote access and control

• Future-Proof
  Flash memory allows for easy field upgrades

Applications

Ideal for complete protection of small to medium-sized motors used in:

• Pumps

• Conveyors

• Compressors

• Fans

• Sawmills

• Mining equipment

Protection & Control Capabilities

• Thermal Overload Protection

• 15 selectable curves

• Trip and alarm on overload

• Immediate current overload alarm

• Phase Short Circuit Detection

• Mechanical Jam Protection

• Thermal Memory Lockout

• Single-Phasing / Current Unbalance

• Ground Fault Protection

• Trip and alarm functionality

• Overtemperature Protection

• Using thermistor or optional RTD inputs

• Undercurrent Detection

• Breaker Failure Protection

• Output Controls

• Trip, alarm, auxiliary, and service outputs

• Multi-Speed Motor Support

• Motor Start Supervision

Monitoring & Metering

• Real-time status, current, and temperature display

• Fault diagnostics with trip records (last 5 events)

• Process control capabilities

• Optional analog output for enhanced monitoring

User Interface

• RS485 Serial Port for communication

• Keypad Interface for direct control

• 40-character illuminated display for clear readouts

• 6 LED indicators for quick status visibility

• EnerVista Setup Software compatible for advanced configuration and data access