Product Core Brief

• Model: 369-HI-0-0-0-0
• Brand: GE Multilin
• Series: 369 Motor Management Relay
• Core Function: Provides thermal overload, phase-fault, ground-fault, and jam protection for three-phase AC motors.
• Product Type: Motor Management Relay
• Key Specs: 50-300 VDC / 40-265 VAC control power | 1 A / 5 A CT inputs | RS485 Modbus RTU
• Condition: New Original / New Surplus

Product Introduction

GE Multilin 369-HI-0-0-0-0 is a base-configuration motor management relay for three-phase induction motors. It handles thermal overload, phase loss, unbalance, ground fault, jam/stall, and start-limit supervision using an adaptive thermal model.

This unit carries the HI power-supply option, accepting 50-300 VDC or 40-265 VAC control power. It ships without RTD inputs, metering package, fiber optic, or communication add-ons, making it a straightforward replacement when those features were never used in the original application.

Key Technical Specifications

Quality Control Process (DYNAMIC GENERATION)

• Front-panel and display check. We verify the LCD, keypad, and status LEDs respond correctly. A dim display or stuck key is an immediate red flag.
• Control power-up test. The unit is energized at rated AC and DC levels to confirm stable startup, correct self-test, and no nuisance trips.
• CT input verification. We inject known secondary currents into the phase and ground-fault inputs and confirm measured values match within tolerance.
• Digital I/O and relay output test. Each optically isolated input is checked for proper state recognition, and each output relay is pulsed to confirm contact operation.
• Communication and final packaging. RS485 communication is verified at standard Modbus settings, then the relay is anti-static bagged and foam-packed for shipment.

Replacement Pitfall Guide (DYNAMIC GENERATION)

❗ Confirm the option code matches exactly. The 369-HI-0-0-0-0 has no RTD inputs, no metering package, no fiber optic port, and no Ethernet/Profibus/DeviceNet option. If the original relay used any of those, this unit will not be a drop-in replacement.

❗ Do not mix CT secondary ratings. The relay accepts 1 A or 5 A CTs, but mismatched CT ratios or incorrect programming will cause false overload or ground-fault trips.

❗ Check control power wiring before energizing. The HI supply accepts a wide AC/DC range, but reversed polarity on DC or incorrect AC terminals can damage the unit.

❗ Ground the safety and filter grounds properly. Both ground points must connect to the main ground bus to avoid noise, communication errors, and erratic trips.

Keep these in mind and you’ll cut 90% of rework time.

Compatibility Matrix & Benchmarks

Benchmark highlights

• Switching time delay: less than 200 ms.
• Event log capacity: up to 512 time-stamped events with waveform capture support.