369-LO-0-M-0-0-0-E GE Multilin Motor Management Relay with Low Auxiliary Power and Metering Package
369-LO-0-M-0-0-0-E GE Multilin Motor Management Relay with Low Auxiliary Power and Metering Package - Image 2
369-LO-0-M-0-0-0-E GE Multilin Motor Management Relay with Low Auxiliary Power and Metering Package - Image 3
369-LO-0-M-0-0-0-E GE Multilin Motor Management Relay with Low Auxiliary Power and Metering Package - Image 4

369-LO-0-M-0-0-0-E GE Multilin Motor Management Relay with Low Auxiliary Power and Metering Package

  • 369-LO-0-M-0-0-0-E: Low power, metering enabled, no RTD (subject model)
  • 369-LO-R-M-0-0-0-E: Low power, metering + 12 RTD temperature inputs
  • 369-LO-0-0-0-0-0-E: Low power, base protection only, no metering, no RTD
  • 369-HI-R-M-0-0-0-E: High control power version with metering and RTD
  • 369-LO-0-M-F-0-0-E: Low power, metering, fiber-optic communication port
  • 369-LO-0-M-0-0-0: Low power, metering, standard firmware without enhanced diagnostics
  • 369-LO-R-0-0-0-0-E: Low power, RTD equipped, no metering package
  • 369-LO-0-M-0-D-0-E: Low power, metering, DeviceNet communication option
Request Quote
Category: Brand:

Description

369-LO-0-M-0-0-0-E GE Multilin Motor Management Relay with Low Auxiliary Power and Metering Package

 

Core Product Overview

The 369-LO-0-M-0-0-0-E is a digital multifunctional motor management relay in the GE Multilin 369 series (GE Vernova). The LO designation stands for low auxiliary control power range (20–48 VAC / 20–60 VDC), and the M option includes the full metering package for power, energy and demand measurement. This model does not include the optional 12-channel RTD temperature input board. It provides adaptive thermal overload, phase unbalance, ground fault, stall, jam, undervoltage and overvoltage protection, plus local LCD display, event logging, waveform capture and Modbus RTU communication for DCS/SCADA integration. It is widely used for MCC motor protection in water, mining, oil & gas and power plant auxiliary systems. OEM production is discontinued; available stock is surplus or professionally bench-tested refurbished spare units.

 

Main Technical Specifications

  • Part Number: 369-LO-0-M-0-0-0-E
  • Manufacturer: GE Multilin / GE Vernova
  • Family: 369 Motor Management Relay
  • Device Type: Digital Motor Protection & Management Relay
  • Control Auxiliary Power (LO): 20–48 VAC / 20–60 VDC
  • CT Secondary Rating: Configurable 1 A or 5 A
  • Frequency Range: 20 Hz ~ 100 Hz
  • RTD Input: 0 (no RTD board fitted)
  • Metering: Enabled (M package: power, energy, demand, power factor)
  • Communication: Front-panel RS232, rear RS485 Modbus RTU
  • Display: 40-character LCD with status LED indicators
  • Data Recording: Event logs, startup data, waveform capture (3 buffers, 16 cycles each)
  • Protection Functions: Adaptive overload, phase loss, phase unbalance, ground fault, stall, jam, over/under voltage, starter failure
  • Operating Temperature: -40°C ~ +70°C
  • Humidity: 5%–95% non-condensing
  • Mounting: Panel mount, IP30 front face
  • Dimensions: 296 mm H × 107 mm W × 205 mm D
  • Certifications: UL, CE
  • Status: Obsolete legacy relay; available as surplus or refurbished tested units

 

Same-Series Model Recommendations (8 Models)

  • 369-LO-0-M-0-0-0-E

 

Professional Quality Control & Testing Standard Operating Procedures

All surplus and refurbished 369-LO-0-M-0-0-0-E relays follow this inspection workflow:

  1. Visual & Mechanical Inspection: Inspect LCD, keypad, LEDs, terminal blocks and PCB for burn marks, corrosion or cracked solder; verify part number and revision label.
  2. Auxiliary Power Bench Test: Apply 20–60 VDC / 20–48 VAC control supply, confirm stable internal power rails and no power fault.
  3. Display, Keypad & LED Test: Check LCD pixel integrity, keypad response, alarm and trip indicators.
  4. Protection Element Simulation: Inject calibrated current and voltage to verify overload, unbalance, ground fault and stall pickup/timing.
  5. Metering Accuracy Test: Validate wattage, VAR, power factor and energy readings against reference source.
  6. Communication Interface Test: Test RS232 local setup and RS485 Modbus RTU polling with EnerVista software.
  7. Event & Waveform Capture Test: Trigger fault records, verify timestamp accuracy and waveform buffer storage.
  8. Final Cleaning & Packaging: Clean terminals, reset relay settings to factory default, ESD packaging with printed test certificate.

 

New / Refurbished Relay Installation Guidelines

  1. Pre-Installation Safety: Implement lockout-tagout; isolate MCC control power, CT and VT secondary circuits to avoid hazardous voltage.
  2. Panel Location Check: Choose MCC compartment free of excessive heat, vibration and corrosive gas; maintain ventilation clearance.
  3. Mechanical Mounting: Fit relay into standard panel cutout; secure mounting latches evenly to prevent front-panel distortion.
  4. Secondary Wiring: Terminate CT, VT, control power and output contacts; separate instrument wiring from high-current cables to reduce EMI.
  5. Relay Configuration: Use EnerVista 369 Setup or front keypad to enter motor nameplate, CT ratios, protection curves, alarm thresholds and Modbus address.
  6. Pre-Commissioning Functional Test: Energize relay without primary motor power; simulate faults to confirm trip contact operation, LED alarms and SCADA Modbus data.
  7. Commissioning & Baseline Recording: Supervised motor startup; record startup waveforms and thermal trends, confirm protection elements function correctly, archive setting file.

 

Application Scenarios & Product Features

Typical Application Scenarios

  • Three-phase AC motor protection within Motor Control Centers (MCC)
  • Power plant auxiliary pumps, fans and conveyors
  • Mining material handling and crushing equipment
  • Oil & gas pump skids and non-hazardous area motor control
  • Water and wastewater large pumping stations
  • Retrofit spare replacement for existing 369-series installations

Core Product Features

  • Adaptive FlexCurve™ thermal overload that learns motor thermal characteristics
  • Integrated metering package for power, energy, demand and power factor trending
  • Rich protection suite for electrical and mechanical motor failure modes
  • Local LCD and status LEDs for on-site troubleshooting and trip indication
  • Built-in waveform capture and sequence-of-event logging for post-fault analysis
  • RS485 Modbus RTU for DCS and SCADA integration
  • Low auxiliary power input for cabinets with limited 24–48V control supplies
  • Panel-mount design optimized for standard MCC compartments

 

Frequently Asked Questions (FAQ)

Q1: What do LO, 0 and M mean in the part number 369-LO-0-M-0-0-0-E? A1: LO = low auxiliary control power (20–48 VAC / 20–60 VDC); the third digit 0 = no RTD temperature input board; M = metering package enabled for power and energy measurement.

Q2: Can this relay add RTD temperature monitoring later? A2: This hardware variant is built without the RTD module. Temperature monitoring requires the R-suffix model such as 369-LO-R-M-0-0-0-E.

Q3: Is 369-LO-0-M-0-0-0-E still manufactured by GE Vernova? A3: No, the 369 series is obsolete. The recommended modern replacement is the GE Multilin 859 motor relay. Available stock is surplus or professionally refurbished and bench tested.

Q4: What are common failure modes for this relay? A4: Typical faults include ageing power supply capacitors, LCD contrast degradation, worn keypad membrane, terminal corrosion, and setting memory corruption after voltage transients.

Q5: Can it be hot-swapped in an energized MCC bucket? A5: Hot swap is not permitted. CT circuits must be shorted before removal, and all control power isolated to eliminate shock risk and prevent accidental motor trip.

Related products