GE SR750-P5-G5-S5-LO-A20-R-T Feeder Protection Relay Module

The GE SR750-P5-G5-S5-LO-A20-R-T is a precision-engineered protection relay designed for industrial power distribution systems. Its primary role? Safeguarding critical infrastructure in environments where electrical reliability matters—think power plants, manufacturing facilities, and energy grids. This isn’t just another relay; it’s a workhorse for engineers needing rock-solid performance under pressure.

Technical Specifications

Brand: GE
Series: SR750
Model: SR750-P5-G5-S5-LO-A20-R-T
Voltage: 220 V AC
Output Frequency: 50 kHz
Mounting: Panel-mount design
Comms: Modbus RTU, DNP 3.0
Temp Range: -20°C to +70°C
Certifications: IEC 60255, IEEE C37.118
Insulation: 300 V

Engineers often deploy this module in low-control-power applications where energy efficiency is non-negotiable. A chemical plant in Texas, for example, integrated it into their distribution network to prevent costly downtime during voltage fluctuations. Companies commonly pair it with EnerVista 750 software for real-time diagnostics—a combo that’s popular in both new installations and retrofits. Our inventory also includes related SR750 variants like the SR469-P5-HI-A20 and IS230SRTDH2A, ensuring compatibility across systems.

What sets this relay apart? Its industrial-grade build—no-nonsense design handles vibration, electrical noise, and temperature extremes without breaking a sweat. The dual communication protocols (Modbus and DNP 3.0) simplify integration with SCADA systems, while programmable settings let technicians tweak parameters on the fly. Redundancy features? They’re baked in, though I’ve heard some users wish GE had included a backup power option. Still, its 19-inch panel compatibility and minimal maintenance requirements make it a favorite for long-term deployments.