Eaton transformer relay ETR-5000-2A1BA1 - RS485 Modbus/DNP3

Modbus RTU or DNP3 RTU over RS485 enables seamless PLC/SCADA integration, reducing commissioning time and enabling centralized fault logging in transformer protection schemes. This configuration is ideal for retrofitting existing protection equipment in substations or OEM power modules, delivering faster fault isolation and easier data exchange with the control system. 8 digital inputs and 9 digital outputs provide ample I/O for supervision, tripping schemes, and interlocking without the need for extensive external modules, which lowers panel space requirements and wiring complexity while boosting reliability. The wide power supply range of 19-300 VDC and 40-250 VAC supports both new installations and legacy plant voltages, simplifying procurement and inventory management while ensuring compatibility across multiple sites. The device offers 50/60 Hz frequency support and dual current sensing inputs, enabling accurate protection coordination and metering across diverse electrical networks. I/O options such as Sensitive Ground Input, URTD Interface, Trip Coil Monitor, and IRIG-B allow advanced fault correlation, faster event reconstruction, and precise time synchronization for diagnostics and compliance reporting. Removable terminals and projection mounting simplify installation, commissioning, and future servicing, reducing downtime during upgrades and enabling clean, scalable protection architectures. Zone selective interlocking (ZSI) capability further enhances selectivity, improving system reliability and reducing the impact of faults on downstream equipment. Overall, the ETR-5000-2A1BA1 delivers a compact, feature-rich solution that aligns protection performance with modern industrial workflows, supporting both OEMs and utilities in achieving safer, more efficient transformer protection.