Eaton ETR-4000-2A3IB1 Transformer Relay - RS-485
Part Number: ETR-4000-2A3IB1
Quick Summary
ETR-4000-2A3IB1 transformer relay protects transformers in distribution networks and OEM equipment. Engineers often face nuisance trips and limited diagnostics with legacy relays, leading to downtime and costly maintenance. This Eaton unit supports advanced protection and monitoring through eight digital inputs, nine outputs, and two current-sensing inputs, enabling precise protection schemes and rapid fault isolation. Compliance details are region-specific, so verify CE, SIL, or IP ratings with the manufacturer for your installation. The relay communicates over RS-485 Modbus/DNP3 and Ethernet TCP, providing remote monitoring and SCADA integration. Its rugged construction, projection mounting, and conformal coating support harsh environments, while the broad power-supply range simplifies retrofit and wiring reduction.
Product Information
Extended Description
ETR-4000-2A3IB1 Eaton: Eaton, transformer relay, ETR-4000, Transformer protection relay,5A, 1A, 40-250 Vac, 19-300 Vdc, 8, 9,Transformer, over RS-485, over Ethernet RJ-45,19-300Vdc, 40-250Vac, 50/60 Hz, Projection,Sensitive Ground Input,Trip Coil Monitor
Product Name
Eaton transformer relay
Catalog Number
ETR-4000-2A3IB1
UPC
786679154991
Product Length/Depth
8.06 in
Product Height
8.7 in
Product Width
9.72 in
Product Weight
9.3 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Compliances
Contact Manufacturer
Application
Transformer
Type
Transformer relay
Product Category
Transformer protection relay
Analog inputs
0
Analog outputs
0
Base relay
ETR-4000
Conformal coating
Conformal Coated Circuit Boards
Current sensing inputs
2
Digital inputs
8
Digital outputs
9
I/O options
IRIG-B Sensitive Ground Input URTD Interface Trip Coil Monitor
Modbus / DNP3 RTU
over RS-485
Modbus / DNP3 TCP
over Ethernet RJ-45
Phase current
5A, 1A
Sensing inputs
Current Protection and Metering Differential Protection
Zone selective interlocking
2
Number of inputs
8
Number of outputs
9
Power supply range
19-300Vdc, 40-250Vac
Frequency rating
50/60 Hz
Power consumption
40-250 Vac, 19-300 Vdc
Number of inputs
8
Number of outputs
9
Power supply range
19-300Vdc, 40-250Vac
Power consumption
40-250 Vac, 19-300 Vdc
Frequency rating
50/60 Hz
Terminals
Removable
Mounting method
Projection
Voltage sensing inputs
0
Terminals
Removable
Power metering, monitoring and diagnostics products for OEMs
Power metering, monitoring and diagnostics products for OEMs
Eaton Distribution and Transformer Relays
Eaton Distribution and Transformer Relays
Eaton Distribution and Transformer Relays
Eaton Distribution and Transformer Relays
Eaton Distribution and Transformer Relays
Eaton Distribution and Transformer Relays
Eaton Distribution and Transformer Relays
Eaton Specification Sheet - ETR-4000-2A3IB1
Feature → Business Impact → Application: Eight digital inputs and nine outputs enable complex protection schemes with clear status signaling, reducing miscoordination and enabling faster fault isolation in transformer protection relays. This translates to improved uptime and easier maintenance planning in substation or plant transformer applications. Application: Ideal for distribution feeders and OEM transformer packages requiring discrete control logic and reliable I/O mapping. Feature → Business Impact → Application: A wide power-supply range (19-300 Vdc, 40-250 Vac) supports seamless integration with existing plant voltages, reducing wiring changes and the risk of incorrect supply connections. This simplifies retrofits and new installs in mixed-voltage environments. Application: Retrofit projects and new transformer protectors in facilities with diverse electrical infrastructure. Feature → Business Impact → Application: RS-485 Modbus RTU/DNP3 over Ethernet RJ-45 enables easy integration with modern SCADA and MES systems, delivering real-time data, remote diagnostics, and predictive maintenance signals. Application: OEM equipment integration and utility-scale transformer monitoring. Feature → Business Impact → Application: I/O options such as IRIG-B Sensitive Ground Input and Trip Coil Monitor enhance coordination and synchronization, reducing mis-trips and enabling precise trip logic in complex protection schemes. Application: Systems requiring accurate timing and monitored trip paths in critical transformers. Feature → Business Impact → Application: Zone selective interlocking (2) and robust differential protection inputs improve selectivity, limiting fault propagation and shortening fault clearing times. Application: High-reliability transformer protection in substations and industrial feeders. Feature → Business Impact → Application: Conformal coating and removable terminals simplify field installation and maintenance, improving reliability in harsh environments and reducing commissioning time. Application: In-plant or outdoor transformer installations where vibration, dust, or moisture are considerations.
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FAQs
Installation should account for the projection mounting method, removable terminals, and conformity to the converter’s voltage ranges. Plan for RS-485 or Ethernet network wiring, proper grounding, and ensuring the 19-300 Vdc / 40-250 Vac power supply is within specification. The unit’s conformal coating supports harsh environments, but confirm mounting clearances and enclosure ingress protection per your plant standards.
Yes. The relay provides Modbus communication over RS-485 and Modbus/DNP3 over Ethernet (RJ-45), enabling integration with standard SCADA and HMI systems. When planning integration, map the eight digital inputs and nine outputs to your protection logic and ensure network addressing aligns with your supervisory software.
This relay supports transformer protection with current protection and metering, differential protection, and zone selective interlocking. It is suitable for distribution transformers, OEM transformer packages, and applications requiring precise trip coordination, remote monitoring, and fault localization in substations or industrial facilities.
Compliance details are region-specific and specified by the manufacturer. Verify CE, SIL, IP ratings, and any regional certifications with Eaton prior to purchase to ensure alignment with your site requirements and safety regulations.
The relay offers remote monitoring, diagnostics, and enhanced protection coordination, which can reduce unplanned downtime and maintenance costs. By improving fault localization and enabling quicker intervention, facilities often realize lower maintenance labor costs and reduced transformer wear over time.