Eaton ETR-4000-2A2GA1 Transformer Relay - Modbus/DNP3 RS-485

Feature: 8 digital inputs and 9 digital outputs enable comprehensive local control and status reporting. Benefit → Enables precise supervisory control and fault signaling, reducing misoperations and improving time-to-fault resolution. Application → Substation and plant protection schemes where clear digital signaling is required to coordinate protective actions across multiple devices. Long-tail keywords: transformer protection relay, digital I/O, protection signaling. Feature: 2 current sensing inputs support differential protection and metering. Benefit → Improves accuracy of transformer fault detection and energy accounting, supporting better asset management. Application → Critical transformer protection in medium to large installations. Feature: Wide power supply range (19-300Vdc, 40-250Vac) and 50/60 Hz compatibility. Benefit → Simplifies integration with existing power rails and eliminates the need for heavy engineering changes during upgrades. Application → New builds and retrofit projects across mixed AC/DC environments. Feature: Modbus RTU or DNP3 RTU over D-Sub/RS-485 communications. Benefit → Smooth SCADA/EMS integration, remote diagnostics, and centralized protection orchestration, reducing on-site labor. Application → Enterprise-wide monitoring and substation automation. Feature: I/O options including Sensitive Ground Input, Trip Coil Monitor, URTD Interface, and IRIG-B. Benefit → Flexible configuration for custom protective schemes and time synchronization, increasing situational awareness. Application → Complex protection tasks and communications with time-stamped events. Feature: Projection mounting and removable terminals. Benefit → Faster installation, easier maintenance, and reliable field connections with minimal downtime. Application → Field retrofits and new installations in tight equipment spaces.