GE SR489-P1-HI-A20-E Industrial Control Relay Module

Engineered for precision power system protection, the GE SR489-P1-HI-A20-E relay module specializes in generator management and critical equipment monitoring. This rugged device ensures uninterrupted operation in industrial environments where power stability and fault detection are paramount, particularly for rotating machinery and energy infrastructure.

Brand: General Electric

Series: SR489

Mounting: Panel or 19″ rack compatible

Operating Temp: -40 to 60°C

Weight: 7.7 kg (17 lbs)

Durability: 1.9 kV AC dielectric strength

Accuracy: ±0.02 Hz underfrequency pickup

Commonly deployed in power plants and utility networks, this module shines in applications requiring adaptive protection strategies. Its ANSI/IEC-compliant ground overcurrent curves allow customization for different grid standards, while the 10%+ tachometer duty cycle makes it ideal for turbine and alternator monitoring. Field technicians appreciate the 2-5 mA trip coil supervision that maintains reliability even with fluctuating loads.

What sets this relay apart is its combination of environmental resilience and precision monitoring. The 2.5KV oscillation test rating ensures survival in electrically noisy environments, while the programmable Flexcurve settings allow engineers to optimize protection profiles. Though designed for GE’s legacy power systems, its 19″ rack compatibility means it integrates smoothly with third-party control panels too. Some users report that while configuration requires specialized software, the long-term reliability gains justify the initial learning curve.