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GE Multilin 369-HI-R-M-0-0-0-E Motor Management Relay

• Stator and Bearing Thermal Tracking: Combines live phase-current profiles with RTD temperature feedback to calculate a dynamic, multi-variable thermal replica of the motor's internal state.

• Compact Footprint Integration: Specifically engineered to fit standard cutouts where larger 469 series relays cannot match space constraints, minimizing overall panel sizing.

• Flexible Universal Control Power: Outfitted with a high-voltage ("HI") internal switching power supply that spans standard AC and DC plant distribution voltages, eliminating the need for dedicated step-down control transformers.

• Comprehensive Fault Oscillography: Records and timestamps the last 500 system events alongside pre-trip motor current data to dramatically speed up root-cause fault investigation.

• Streamlined Modbus Network Integration: Features a rear-facing, isolated RS-485 serial port communicating via standard Modbus RTU protocols to link live motor data directly to plant HMI screens.

The GE Multilin 369-HI-R-M-0-0-0-E is an industrial safety computing device designed to keep medium-voltage motors running within their safe thermal and electrical operating envelopes. Industrial process drives—such as hydraulic pumps, ventilation fans, and material mixers—are highly vulnerable to internal insulation destruction when subjected to voltage drops, mechanical line jams, or blocked cooling pathways. This relay continuously analyzes the true root-mean-square (RMS) current waveform values across all three operational phase lines to stop damage before it starts.

The specific code string layout defines a highly capable, standalone monitoring solution. The inclusion of the "R" internal module means that instead of relying purely on mathematical estimations for motor heating, the 369 reads twelve physical RTD probes buried deep inside the motor's stator windings and bearing housings. The "M" module gives field commissions total flexibility; it handles either 1A or 5A secondary current transformer inputs out of a single box, allowing maintenance teams to reduce spare part warehouse inventory across multi-generational plant infrastructure.

• Petrochemical Collection Points: Protecting hazardous-location oil lift pumps, cooling fan arrays, and remote chemical transfer stations.

• Municipal Waste Infrastructure: Safeguarding medium-voltage waste aeration blowers, intake pumps, and high-volume fluid shredders.

• Heavy Manufacturing Assemblies: Managing high-torque conveyor motors, hydraulic press pumps, and cooling tower fans prone to rapid load shifts.

• Aggregate Processing Plants: Controlling remote intake belt drives, vibrating sorting screens, and ventilation networks in high-dust environments.

Q: What is the primary difference between the 369 series and the larger 469 series relays? A: The 369 series provides a more compact panel footprint and focuses on essential, cost-effective motor protection protocols. The 469 series is a larger, drawout-style module that adds highly advanced multi-variable differential protection and custom analog input tracking for massive, high-consequence utility motors.

Q: Can this specific model be connected directly to a Profibus network network topology? A: No, not natively. The three center digits "0-0-0" indicate that this unit is configured with the standard Modbus RTU RS-485 serial communication architecture. A configuration with a dedicated Profibus card slot would feature a different sequence in the option code block.

Q: How does the dual 1A / 5A current transformer input selection function? A: The "M" designation signifies that the internal sensing transformers are dual-wound. An engineer selects between a 1A secondary or a 5A secondary loop configuration entirely via the front keypad software options in the system configuration settings, requiring no physical internal component swaps.

Q: What happens to the logged event history if the control power slips completely? A: The 369-HI-R-M-0-0-0-E stores its continuous event recorder matrix, trip logs, and user calibration configurations inside non-volatile EEPROM memory. This data is retained permanently without requiring an external battery backup or constant line power.

Do you provide global shipping services?

Yes. We have local distribution centers on all continents, which can quickly transport parts to any corner of the world.

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We have a vast inventory of thousands of new, refurbished, and outdated automation components, including products from well-known manufacturers such as ABB and Schneider. If you cannot find the required parts, please do not worry. We work closely with a global network of professional suppliers to provide you with tailored quotes even if the part is not listed on our website.

Who can I contact if I encounter any problems?

Our experienced customer service team will handle any issues after you place your order.