Eaton ETR-4000-2A1LA0 Transformer Relay - Mbus TCP / DNP3

The Mbus TCP or DNP3 TCP/UDP over LC duplex fiber Ethernet interface enables seamless remote monitoring and control, reducing site visits and enabling faster fault isolation; this translates to lower maintenance costs and improved uptime in transformers used in substations and industrial facilities. The device integrates 8 digital inputs and 9 digital outputs with 2 current sensing inputs, supporting complex protection schemes and Zone Selective Interlocking (2) to enhance selectivity and fault isolation, thereby decreasing system-wide outages and equipment stress. Its power-supply range of 19-300 Vdc and 40-250 Vac, coupled with compatibility for 50/60 Hz operation, offers installation flexibility across global sites and diverse power architectures, cutting engineering effort and inventory complexity. Features such as IRIG-B time synchronization, Sensitive Ground Input, Trip Coil Monitor, and URTD Interface provide precise timing and robust fault detection for critical transformer protection tasks. Removable terminals and semi-flush mounting simplify retrofits and panel installations, improving serviceability and reducing commissioning time. The generous inputs/outputs footprint supports scalable protection logic without re-wiring, while the documented warranty and direct manufacturer guidance help sustain long-term reliability and compliance across projects.