Eaton Transformer Relay ETR-4000-2A2BA1 - Modbus RS485

Part Number: ETR-4000-2A2BA1
ETR-4000-2A2BA1
Manufacturer
Eaton
Part number
ETR-4000-2A2BA1
Category

Quick Summary

Eaton transformer relay ETR-4000-2A2BA1 provides transformer protection and monitoring for industrial power systems. In practice, engineers struggle to coordinate protection settings across devices and to obtain timely, reliable diagnostics for fast fault isolation. Certification details are not listed in this spec; confirm CE, SIL, and IP ratings directly with Eaton before field deployment. Featuring Modbus RTU or DNP3 RTU over RS485, eight digital inputs and nine outputs, and a wide power range of 19-300 Vdc or 40-250 Vac, it supports scalable protection across transformer fleets. This combination enables clearer visibility, faster fault isolation, and safer, more reliable transformer operation across demanding environments.

Product Information

Extended Description

ETR-4000-2A2BA1 Eaton: Eaton, transformer relay, ETR-4000, Transformer protection relay, Modbus RTU or DNP3 RTU over RS485, 5A, 1A, 40-250 Vac, 19-300 Vdc, Transformer, over RS-485, 19-300Vdc, 40-250Vac, 50/60 Hz, ProjectionSensitive Ground Input
Product Name
Eaton transformer relay
Catalog Number
ETR-4000-2A2BA1
UPC
786679154977
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 RS485
Current sensing inputs
2
Digital inputs
8
Digital outputs
9
I/O options
URTD Interface Trip Coil Monitor IRIG-B Sensitive Ground Input
Modbus / DNP3 RTU
over RS-485
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
E-series protective relays E-series protective relays Introduction to Eaton's E-Series Relay, Step 1: Physical Connections Introduction to Eaton's E-Series Relay, Step 1: Physical Connections Introduction to Eaton's E-Series Relay, Step 1: Physical Connections Introduction to Eaton's E-Series Relay, Step 1: Physical Connections Introduction to Eaton's E-Series Relay, Step 1: Physical Connections Introduction to Eaton's E-Series Relay, Step 1: Physical Connections Introduction to Eaton's E-Series Relay, Step 1: Physical Connections Eaton Specification Sheet - ETR-4000-2A2BA1
Feature → Business Impact → Application: 8 digital inputs and 9 outputs enable complex interlock schemes and flexible logic for transformer protection, reducing mis-tripping and enabling precise control of protection sequences in switching stations and substations. This translates to lower downtime and safer start-up/shutdown sequences in industrial plants. Application: Use in multi-transformer configurations where coordinated tripping and metering are required to prevent cascading faults. Feature → Business Impact → Application: Modbus RTU or DNP3 RTU over RS485 provides robust, field-proven communication with SCADA and historian systems, improving remote diagnostics and real-time visibility. Application: Substation upgrades and OEM panel enclosures where centralized monitoring is essential for asset management and uptime. Feature → Business Impact → Application: Power supply range of 19-300 Vdc and 40-250 Vac supports diverse plant power profiles, enabling seamless retrofits without extra power conversion hardware. Application: Modernizing legacy transformer protection without reconfiguring entire power rails. Feature → Business Impact → Application: I/O options URTD Interface, Trip Coil Monitor, and IRIG-B time synchronization improve trip reliability and timing accuracy, critical in zone-selective interlocking schemes and protective relays. Application: High-reliability protection in critical feeders and generation-connected transformers. Feature → Business Impact → Application: Sensing inputs include Current Protection and Metering with Differential Protection, delivering accurate fault detection and selective tripping. Application: Precision protection in high-voltage and medium-voltage transformer applications. Feature → Business Impact → Application: Projection mounting and removable terminals streamline installation, testing, and maintenance, reducing commissioning time and service costs. Application: Retrofit projects and new builds where field wire termination speed matters. Warranty and support: Built on Eaton’s policy with access to datasheets, brochures, and video tutorials to support maintenance planning and operator training. Application: Asset lifecycle optimization and faster ROI through better protective coverage and easier troubleshooting.

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FAQs

The unit supports Modbus RTU or DNP3 RTU over RS485, enabling straightforward integration with common SCADA platforms and historical databases. Its 8 digital inputs and 9 outputs allow aligned protection logic, and the removable terminals simplify commissioning and future maintenance without rewiring large sections of a control panel.
Plan for a power supply range of 19-300 Vdc or 40-250 Vac and operation at 50/60 Hz. The device provides current protection, metering, and differential protection through 2 current-sensing inputs and 8 digital inputs, with 9 outputs to drive relays or tri-state signals. This supports diverse transformer protection schemes without additional power conditioning.
Yes. It is designed as a transformer protection relay with capabilities for transformer protection, metering, differential protection, and time-coordinated interlocking. With RS-485 communications and URTD, IRIG-B options, the ETR-4000-2A2BA1 supports robust protection schemes and precise time synchronization in demanding environments.
The device uses projection mounting with removable terminals, which facilitates quick field installation and maintenance. Compatibility with URTD and IRIG-B options supports time-critical monitoring and remote diagnostics, making it suitable for retrofits and new builds in compact control panels.
Eaton provides specification sheets, brochures, and multimedia resources, including the E-series protective relays documentation. The warranty is outlined by Eaton’s policy, and Compliances are to be confirmed with the manufacturer. This support structure helps ensure correct configuration, commissioning, and long-term asset reliability.