Eaton ETR-4000-2A3HA1 Transformer Relay - 61850

The ETR-4000-2A3HA1 offers IEC 61850, Mbus TCP, and DNP3 TCP/UDP communications over Ethernet RJ-45, enabling seamless integration into modern protection schemes and substations. This connectivity reduces engineering time and supports unified data access, improving fault analysis and remote diagnostics for transformer protection. It is ideal for applications requiring interoperable protection relays within expansion-friendly automation networks, delivering faster fault isolation and reduced downtime. With eight digital inputs and nine digital outputs, plus two current-sensing inputs, operators gain flexible protection logic and monitoring capabilities for differential and current protection schemes, delivering measurable improvements in reliability and performance in both substation and industrial environments. The device’s projection mounting and removable terminals simplify installation, speeding commissioning and maintenance while supporting future upgrades and modular expansion in evolving protection architectures. The input/output configuration, URTD interface options, and IRIG-B compatibility enable precise synchronization and monitoring across distributed protection schemes, helping plants meet strict uptime targets and regulatory expectations. The power supply range of 19-300 Vdc and 40-250 Vac supports diverse plant power architectures, reducing the need for multiple adapters and simplifying stock management. In practice, this translates to lower total cost of ownership, easier spare-part planning, and consistent protection behavior across devices from a single manufacturer. The integrated metering and zone-selective interlocking (ZSI) features further enable selective tripping and improved coordination during faults, optimizing protection coordination and minimizing customer impact.