GE Multilin 239 is a legacy digital motor protection relay for three-phase AC motors, providing thermal overload, locked rotor, unbalance, ground fault and RTD temperature monitoring, RS485 Modbus communication, widely used as spare replacement.

Product Overview:

GE Multilin 239 is a microprocessor-based digital motor protection relay, designed to protect three-phase AC motors and associated mechanical equipment. It integrates comprehensive motor protection, temperature monitoring and fault recording functions. This EOL relay supports separate starting and running protection curves, built-in RTD temperature monitoring, and RS485 Modbus communication for data upload and parameter setting. It is widely supplied as spare parts for old MCC and motor control cabinets in industrial sites.

Key Features:

• Comprehensive protection for three-phase AC motors
• Thermal overload, locked rotor, stall, phase unbalance, undercurrent, ground fault protection
• Support stator and bearing RTD temperature monitoring
• 15 selectable overload curves, independent start and run protection model
• RS485 interface with Modbus protocol
• Trip, alarm and programmable auxiliary relay outputs
• Optional 4-20mA analog output
• Front panel LCD display and local keypad for setup
• Harsh environment conformal coating optional

• Product discontinued, for maintenance spare replacement

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Technical Specifications:

• Brand: GE Multilin (GE Vernova)
• Model: 239
• Type: Digital Motor Protection Relay
• Communication: RS485, Modbus
• Protection Functions: Overload, locked rotor, unbalance, ground fault, undercurrent
• Temperature Monitoring: RTD input (optional)
• Analog Output: 0-1mA / 0-20mA / 4-20mA (optional)
• Control Power: Wide range AC/DC
• Mounting: Panel mount

• Product Status: EOL, legacy spare part

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Compatibility & Application:

It is used in water treatment, mining, oil & gas, chemical, power plant motor control centers, fans, pumps and compressor motor protection, matched with GE motor control cabinets.