GE Multilin 469-P1-HI-A20-T-H Motor Management Relay
The 469-P1-HI-A20-T-H is part of the GE Multilin 469 series, designed for protection, control, monitoring, and diagnostics of medium- and large-size motors used in heavy industrial environments.
Overview
The relay integrates motor protection + condition monitoring + communications into one device, commonly used in:
- Oil & gas
- Mining and metals
- Power generation
- Water & wastewater
- Manufacturing and MCC systems
It is a draw-out motor management relay typically installed in switchgear or motor control centers.
Key Features
Comprehensive motor protection
- Overload and thermal model protection
- Phase loss, unbalance and undercurrent protection
- Ground fault and differential protection
- Stall, jam and start-up supervision
- Voltage and frequency monitoring
These functions help prevent motor damage and reduce downtime.
Advanced monitoring & diagnostics
- Motor health diagnostics and metering
- Customizable overload curves
- Motor Settings Auto-Configurator for quick setup
- Event recording and alarms
Communication & integration
- Ethernet 10Base-T connectivity
- Multiple communication protocols
- Easy integration into plant control systems
Model Code Breakdown (Important)
469-P1-HI-A20-T-H
| Code | Meaning |
|---|---|
| 469 | Multilin motor management relay series |
| P1 | 1 A CT secondary inputs |
| HI | High control power range |
| A20 | Analog outputs option |
| T | Ethernet communications |
| H | Harsh environment conformal coating |
The conformal coating protects electronics from dust, chemicals, moisture and temperature stress, making this version suitable for harsh industrial sites.
Key Technical Specifications
Electrical
- Control power: 90–300 VDC or 70–265 VAC (48–62 Hz)
- Phase CT inputs: 1 A secondary
- Analog outputs: 4 × 4–20 mA
- Digital inputs: 9 opto-isolated
Interface
- Enhanced LCD display (40-character)
- RS232 configuration port
Environmental
- Operating temperature: −40°C to +60°C
Typical Applications
- Medium-voltage motors
- Pumps, compressors, conveyors
- Crushers, mills and fans
- Critical process motors
It is especially valued where motor reliability and downtime reduction are critical.
Summary
The GE Multilin 469-P1-HI-A20-T-H is a full-featured industrial motor protection relay combining:
- Advanced protection
- Real-time monitoring
- Flexible communications
- Harsh-environment durability
It remains widely used in legacy and retrofit motor protection systems.
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