Eaton ETR-4000-2A2GA0 Transformer Relay - Modbus RTU RS-485

Part Number: ETR-4000-2A2GA0
ETR-4000-2A2GA0
Manufacturer
Eaton
Part number
ETR-4000-2A2GA0
Category

Quick Summary

Eaton transformer relay, the ETR-4000-2A2GA0, delivers robust transformer protection for industrial power systems. Engineers often struggle with mis-trips, complex wiring, and maintenance overhead when upgrading legacy relays. Industry-standard documentation and approvals—CE marking, SIL-ready features, and IP-rated options—help ensure safe, compliant deployment; verify specific region certifications with Eaton. With 8 digital inputs, 9 outputs, Modbus RTU or DNP3 RTU over RS-485, and a flexible 19-300 Vdc / 40-250 Vac power supply, this relay simplifies integration, reduces downtime, and enables remote monitoring and metering. The design supports high-current protection while offering scalable I/O and diagnostic visibility, delivering clear business value for OEMs and utilities alike.

Product Information

Extended Description

ETR-4000-2A2GA0 Eaton: Eaton, transformer relay, ETR-4000, Transformer protection relay, Modbus RTU or DNP3 RTU over D-SUB / RS485, 5A, 1A, 40-250 Vac, 19-300 Vdc, 8, 9,Transformer, D-Sub/RS-485, 19-300Vdc, 40-250Vac, 50/60 Hz Sensitive Ground Input
Product Name
Eaton transformer relay
Catalog Number
ETR-4000-2A2GA0
UPC
786679155363
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
None
Communication
Modbus RTU or DNP3 RTU over D-SUB / RS485
Current sensing inputs
2
Digital inputs
8
Digital outputs
9
I/O options
URTD Interface Trip Coil Monitor Sensitive Ground Input IRIG-B
Modbus / DNP3 RTU
D-Sub / RS-485
Phase current
5A, 1A
Sensing inputs
Differential Protection Current Protection and Metering
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
Semi-flush
Voltage sensing inputs
0
Terminals
Removable
Power metering, monitoring and diagnostics products for OEMs Power metering, monitoring and diagnostics products for OEMs Programming an Eaton E-Series Relay, Step 3: Getting Started with the E-Series Wizard Programming an Eaton E-Series Relay, Step 3: Getting Started with the E-Series Wizard Programming an Eaton E-Series Relay, Step 3: Getting Started with the E-Series Wizard Programming an Eaton E-Series Relay, Step 3: Getting Started with the E-Series Wizard Programming an Eaton E-Series Relay, Step 3: Getting Started with the E-Series Wizard Programming an Eaton E-Series Relay, Step 3: Getting Started with the E-Series Wizard Programming an Eaton E-Series Relay, Step 3: Getting Started with the E-Series Wizard Eaton Specification Sheet - ETR-4000-2A2GA0
Feature 8 digital inputs and 9 digital outputs enable comprehensive transformer control and status signaling, reducing panel wiring complexity. Business Impact: streamlined installation and easier diagnostics translate to lower field labor costs and faster commissioning. Application: ideal for transformer protection schemes in substations and OEM equipment. Feature Modbus RTU and DNP3 RTU over RS-485 provide flexible, industry-standard communication, enabling seamless integration with SCADA and PLC systems. Business Impact: remote monitoring, faster fault analysis, and improved asset utilization. Application: supports OEMs delivering turnkey protective relays and utilities modernizing protection networks. Feature Power supply range from 19-300 Vdc to 40-250 Vac with 50/60 Hz operation reduces inventory needs and simplifies site wiring. Business Impact: fewer power supplies and fewer configuration errors during installation. Application: suitable for mixed-power environments. Feature Zone selective interlocking (2) and differential/current protection and metering functions improve selective trips and system reliability. Business Impact: minimized disruption during faults, protecting critical transformers. Application: critical in utility feeders and industrial power centers. Feature URTD interface, Trip Coil Monitor, Sensitive Ground Input, and IRIG-B support provide advanced monitoring and time synchronization options. Business Impact: enhanced diagnostics, precise event logging, and coordinated protection. Application: high-availability installations and OEM protection modules. Feature Removable terminals and semi-flush mounting simplify on-site wiring and rack integration. Business Impact: faster maintenance and upgradeability with reduced connection failures. Application: field deployments requiring reliable, serviceable protection relays. Warranty and support: backed by Eaton’s standard policy, ensuring parts and service clarity across lifecycle. Application: trusted vendor relationship for consistent spare parts and updates.

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FAQs

The relay uses removable terminals and semi-flush mounting for straightforward field wiring and rack integration. With 8 digital inputs and 9 outputs, install can be staged to match existing control panels, minimizing disruption. Compatibility with URTD interface and IRIG-B timing further eases integration in OEM assemblies and substations.
Key specs include a power supply range of 19-300 Vdc or 40-250 Vac, 50/60 Hz operation, 8 digital inputs, 9 digital outputs, and 2-zone selective interlocking. Communication options are Modbus RTU or DNP3 RTU over RS-485, with differential protection, current protection, and metering capabilities for transformer protection applications.
Yes. The ETR-4000-2A2GA0 is designed for transformer protection in both utility substations and OEM equipment. Its versatile I/O, flexible communications, and block-level protection features support reliable operation, remote monitoring, and easy integration with SCADA/PLC networks in demanding environments.
Compliances and regional certifications vary; Eaton provides official documentation on request. The product page notes 'Compliances: Contact Manufacturer,' so confirm CE, SIL, IP ratings, and other regional requirements with Eaton to ensure your deployment meets local safety and performance standards.
The relay offers remote monitoring, diagnostic visibility, and reduced downtime through fast fault isolation via 8 DI/9 DO and robust Modbus/DNP3 communications. The warranty (one year from installation or 18 months from shipment) provides lifecycle cost clarity, helping justify the initial investment with improved reliability and streamlined service.