Eaton ETR-4000-2A3FA1 Transformer Relay - Modbus RTU

Feature → Business Impact → Application The ETR-4000-2A3FA1 supports a broad power supply range of 19-300 Vdc and 40-250 Vac, enabling flexible installation across varied plant electrical rails. This translates to reduced wiring mistakes, faster commissioning, and lower total cost of ownership when deployed in substations or OEM transformer racks; ideal for new builds and retrofit projects requiring reliable transformer protection with minimal downtime. Feature → Business Impact → Application Eight digital inputs and nine digital outputs provide extensive logic and alarm capability, enabling sophisticated protection schemes and centralized fault notification. In practice, this supports plant-wide coordination with existing automation architectures and faster isolation during transformer faults, reducing outage duration in critical processes. Feature → Business Impact → Application Two current sensing inputs and zone selective interlocking (2) enhance protection accuracy and selective tripping, delivering targeted fault isolation that preserves healthy sections of the network and improves overall system reliability in heavy industry and utility environments. Feature → Business Impact → Application Modbus RTU or DNP3 RTU over fiber optic ST ensures secure, low-latency communications and remote diagnostics, enabling you to monitor transformer health from central SCADA or MES platforms, even in harsh or noisy environments. Feature → Business Impact → Application Removable terminals and projection mounting simplify field installation and future maintenance, reducing mechanical downtime and enabling easier upgrades in modernization projects or new substations. Feature → Business Impact → Application The URTD interface, IRIG-B trip coil monitor, and sensitive ground input options deliver precise synchronization and monitoring for high-accuracy protection schemes, supporting critical applications such as hydro or large oil & gas transformer stations where timing and fault data are essential for fast fault clearance.