GE Multilin 369‑LO‑0‑M‑F‑E‑0‑0 Motor Management Digital Protection Relay

The GE Multilin 369‑LO‑0‑M‑F‑E‑0‑0 belongs to the 369 series digital motor management relay. It provides comprehensive motor protection, electrical measurement, RTD temperature monitoring and fault recording functions, and is designed for low‑voltage and medium‑voltage three‑phase induction motors.

This panel‑mounted relay is equipped with local LCD and keypad, and supports RS485 Modbus RTU communication for remote monitoring and parameter configuration. Original production has been discontinued. It is widely stocked as aftermarket spare parts for chemical, water treatment and mining motor control cabinet maintenance and upgrading.

Main Specifications

1. Brand: GE Multilin; Model:369‑LO‑0‑M‑F‑E‑0‑0; Type:Digital Motor Management Protection Relay
2. Applicable Equipment:Three‑phase motors, pumps, fans, compressors and conveyor driving equipment
3. Protection Functions:Overload, phase unbalance, ground fault, stall, undercurrent and RTD overtemperature protection
4. Communication Interface:RS485 serial port, Modbus RTU industrial communication protocol
5. Human‑Machine Interface:Front LCD display and keypad for local reading and parameter setting
6. Installation:Panel cut‑out mounting, wide auxiliary power supply, industrial rugged enclosure
7. Supply Status:Original production discontinued, available as tested surplus or refurbished spare parts

Core Functions

1. Adopt thermal overload model to track heat accumulation and prevent motor winding burnout caused by overheating.
2. Continuously detect three‑phase current imbalance and ground fault current and output alarm or trip signals.
3. Receive RTD sensor signals to monitor real‑time temperature of motor stator windings and bearings.
4. Measure voltage, current, power, power factor and energy consumption for equipment operation analysis.
5. Save fault events and waveform data to help maintenance staff quickly identify failure causes.
6. Transmit operating data and alarm information to DCS/SCADA system through Modbus bus for centralized monitoring.

Application Scenarios

1. Motor protection and condition monitoring for power, petrochemical, water supply and mining industries.
2. Spare relay replacement and routine maintenance of existing GE 369 series motor control panels.
3. Technical renovation and safety optimization of aging motor protection and automatic control systems.
4. On‑site troubleshooting and replacement of faulty relays on continuously running production facilities.
5. Spare‑parts stocking for system integrators and electrical automation maintenance contractors.
6. Global aftermarket spare supply for technicians maintaining obsolete GE Multilin motor protection hardware.

FAQ

1. Q:What does the suffix code 369‑LO‑0‑M‑F‑E‑0‑0 mean?
   A:The string is a full ordering code of 369 series, which defines I/O configuration, communication and hardware options.
2. Q:What communication protocol does this relay adopt?
   A:It uses RS485 interface and supports standard Modbus RTU protocol for remote communication.

3. Q:Is this motor protection relay still in original production?
   A:GE Multilin has stopped manufacturing this model, only tested surplus and refurbished spare units are available.