GE SR489-P5-LO-A20 Generator Management Relay Replacement for 489 Series

• Brand: GE Multilin
• Model: SR489 (order code: 489-P5-LO-A20)
• Type: 489 Generator Management Relay
• Application: Protection, metering and monitoring for small/medium generators
• Phase CT Inputs: P5 = 5 A phase CT secondaries
• Control Power: LO = low-range control power
• Analog Outputs: A20 = 4–20 mA analog outputs (configurable)
• Output Relays: 6 Form-C relays (1 trip, 3 auxiliary, 1 alarm, 1 self-test), 10 A
• Digital Inputs: 7 configurable
• RTD Inputs: Up to 12 elements (alarm/trip)
• Communication: RS-485 (300–19,200 bps), multiple ports
• Recording: 40 events; 64-cycle oscillography
• Country of Origin: Canada

GE SR489-P5-LO-A20 Generator Management Relay Replacement for 489 Series is built for generator sets where dependable protection and quick fault analysis matter. Third-harmonic stator ground protection catches ground faults that conventional relays miss, while oscillography and event recording give engineers the data to diagnose disturbances. The drawout construction keeps field replacement fast, and its economical design makes it a practical choice for small and medium generators.