Eaton ETR-4000-2A0LB1 Transformer relay - 40-250Vac

The Mbus TCP and DNP3 TCP/UDP communications run over LC duplex fiber optic Enet for secure, low‑latency data exchange, enabling fast fault notification and centralized monitoring in substations and industrial facilities. This feature reduces mean time to repair and enhances asset visibility, delivering measurable improvements in system reliability. The eight digital inputs and nine digital outputs provide flexible I/O for interlocking schemes, status signaling, and remote control, which translates into simpler wiring, easier expansion, and reduced installation costs for retrofit projects. Two current sensing inputs support precise transformer protection relies on differential and metering data, improving fault discrimination and lowering the risk of nuisance trips in dynamic load conditions. The unit’s 19‑300 Vdc / 40‑250 Vac power range ensures compatibility with diverse control architectures, simplifying procurement and installation across new builds and upgrades. Conformal coating and removable terminals improve field reliability and serviceability in harsh environments, enabling faster maintenance and longer service life. IRIG‑B URTD interface and Trip Coil Monitor options offer advanced synchronization and protection signaling for zone selective interlocking, supporting safer, more coordinated transformer protection strategies. Overall, the ETR‑4000 is designed to meet modern industry needs for reliability, connectivity, and safety in transformer protection and metering applications.