Description

• Brand: GE Multilin
• Full Model Number: 369-HI-R-M-0-0-H-E
• System / Series Family: Multilin 369 Motor Management Relay
• Core Function: Three-phase motor protection, control, metering, temperature monitoring, and event diagnostics
• Top 3 Hardcore Specs: 12 RTD inputs / Metering package / Harsh-environment conformal coating
• Control Power: 110–250 VDC or 100–240 VAC, 50/60 Hz
• Communications: RS232 and RS485; protocol options depend on the installed communications configuration
• Operating Temperature: -40°C to +60°C
• Storage Temperature: -40°C to +80°C
• Approx. Dimensions: 296 × 107 × 205 mm
• Stock Status: New Surplus / Factory Sealed — exact physical condition to be confirmed before quotation

The GE Multilin 369 documentation identifies the model family as a motor management relay, with order-code options covering RTD inputs, metering, communications, harsh-environment construction, and enhanced diagnostics.

Module 3: Technical Product Introduction

A motor relay failure can take an entire pump, compressor, fan, conveyor, or other three-phase motor out of service. The GE Multilin 369-HI-R-M-0-0-H-E is configured for motor protection and management, combining protection functions with metering, temperature monitoring, event recording, and diagnostic functions. The R option provides 12 RTD inputs, while M identifies the optional metering package. The H option is associated with harsh-environment construction, and the final E identifies enhanced diagnostics and related enhanced relay functions.

The control-power specification is particularly important during replacement: available technical data lists 110–250 VDC or 100–240 VAC at 50/60 Hz. The relay operates from -40°C to +60°C, with a stated storage range of -40°C to +80°C. The metering option adds measurements such as kW, kvar, kVA, power factor, frequency, and energy values, while the relay can record events associated with power failure, alarms, self-test, inhibit, trip, and waveform capture.

Module 4: Application Scenarios & Field Realities

• For medium-voltage motor feeders, the 369 monitors electrical and thermal conditions while providing protection against conditions such as thermal overload, current unbalance, mechanical jam, ground fault, and starting-related abnormalities. The exact protection settings must follow the motor nameplate, CT ratios, and site protection study.
• Where winding and bearing temperatures matter, the 12-RTD configuration is significant. RTD wiring should be checked channel by channel before commissioning; do not assume an existing RTD installation follows the same numbering as another 369 configuration.
• On pumps, compressors, and fans operating in difficult cabinet environments, the H option is relevant because the model is associated with harsh-environment construction and conformal coating. That does not eliminate the need to investigate condensation, corrosive contamination, or excessive cabinet temperature after a relay failure.
• During motor-fault investigations, the M metering package and event-recording functions provide useful operating history. The available technical documentation identifies event triggers including power failure, alarms, self-test, inhibit, trip, and waveform capture.
  

  GE 369-HI-R-M-0-0-H-E

Module 5: Migration, Compatibility & Installation Traps

Replacement Matrix

Field Traps — Watch Out

Decode the complete order code: The model is not simply a generic “369 relay.” The available 369 documentation shows order-code positions controlling features such as RTD inputs, metering, communications, harsh-environment construction, and enhanced functions. A relay with the same basic 369 family designation can therefore have materially different hardware or installed options.

Communications option: This exact model contains 0-0 positions in the communications-related portion of the order code. Available references list RS232 and RS485 interfaces, while Ethernet, DeviceNet, and Profibus are associated with specific option codes on the 369 family. Do not advertise Modbus TCP/IP or Profibus capability for this exact unit unless the physical relay and configuration documentation confirm the relevant option.

Control-power mismatch: Verify the cabinet supply before energizing. The HI version is associated with high control-power input, with published specifications covering 110–250 VDC and 100–240 VAC at 50/60 Hz. Applying the wrong supply can damage the relay.

CT/PT and protection settings: A replacement relay is not ready for service simply because it powers up. Record CT ratios, PT ratios where applicable, motor FLA, acceleration time, trip curves, RTD assignments, output logic, and communications settings from the existing relay before removal.

GE 369-HI-R-M-0-0-H-E

Module 6: Quality Assurance SOP

The pre-shipment inspection for a GE Multilin 369-HI-R-M-0-0-H-E should follow a controlled relay-testing sequence:

1. Part-number verification — Confirm the complete order code as 369-HI-R-M-0-0-H-E. Record serial number, firmware revision, manufacturing information, and installed-option information.
2. OEM anti-counterfeit visual inspection — Examine the GE/Multilin nameplate, enclosure, PCB markings, terminal labels, connectors, display/faceplate, and manufacturing identifiers for inconsistent printing or unauthorized modification.
3. Mechanical inspection — Check the enclosure, terminal blocks, mounting points, faceplate, display area, connector interfaces, and accessible PCB areas for cracks, deformation, corrosion, contamination, or impact damage.
4. Conformal-coating inspection — For the H configuration, inspect accessible coated PCB areas for cracks, peeling, contamination, moisture damage, or evidence of previous repair. Conformal coating should not be treated as proof of environmental suitability by itself.
5. Power-on self-test (POST) — Energize the relay using a controlled test supply within the verified HI control-power range and check applicable startup, display, alarm, and self-test indications.
6. Protection-function verification — Using an approved relay test set, verify applicable current, voltage, thermal, phase, ground-fault, and other protection functions against the test specification. Do not alter customer protection settings merely to demonstrate operation.
7. RTD-channel verification — Test representative RTD inputs and confirm correct channel identification, temperature measurement, alarm behavior, and diagnostic response.
8. Metering verification — Where the M option is confirmed, verify applicable current, voltage, power, energy, power-factor, and frequency measurements against controlled test values. The metering package is documented as part of the model configuration.
9. Communication handshake verification — Verify the front RS232 and applicable RS485 communication interfaces. Where a configured protocol option is present, test the actual protocol rather than assuming that every 369 relay carries the same communications capability.
10. Event-record verification — Trigger controlled alarm/self-test events and confirm that the relay records the expected event information. Where supported by the test setup, verify waveform-capture functionality.
11. Final inspection and packaging — Photograph the exact order-code label, record firmware and test results, protect terminals and the faceplate, apply ESD precautions where appropriate, and package the relay against mechanical shock and moisture.

The QA record should connect the complete 369-HI-R-M-0-0-H-E order code, installed options, firmware information, electrical test results, RTD verification, metering checks, communication test, and final packing record to the exact unit shipped. For this relay family, the complete order code is a procurement-critical identifier, not merely a catalog suffix.