Eaton transformer relay ETR-4000-2A0FA0 - Transformer protection relay

Part Number: ETR-4000-2A0FA0
ETR-4000-2A0FA0
Manufacturer
Eaton
Part number
ETR-4000-2A0FA0
Category

Quick Summary

Eaton transformer relay ETR-4000-2A0FA0 protects transformers in industrial power systems. Manufacturers often struggle with protection gaps, slow diagnostics, and difficult maintenance in harsh environments. Compliances and certifications vary by region, so verify any CE, SIL, or IP ratings with Eaton. The unit supports Modbus RTU or DNP3 RTU over fiber, 8 digital inputs, 9 digital outputs, and removable terminals, delivering reliable protection with easier field service and remote monitoring. This translates to reduced downtime, improved asset visibility, and smoother integration with modern SCADA and MES workflows.

Product Information

Extended Description

ETR-4000-2A0FA0 Eaton: Eaton, transformer relay, ETR-4000, Transformer protection relay, Modbus RTU or DNP3 RTU , 5A, 1A, 40-250 Vac, 19-300 Vdc, 8, 9, Removable, Transformer, , 19-300Vdc, 40-250Vac, 50/60 Hz ,Trip Coil Monitor
Product Name
Eaton transformer relay
Catalog Number
ETR-4000-2A0FA0
UPC
786679154939
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 Fiber Optic ST
Current sensing inputs
2
Digital inputs
8
Digital outputs
9
I/O options
URTD Interface IRIG-B Trip Coil Monitor
Modbus / DNP3 RTU
over fiber optic ST
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
Semi-flush
Voltage sensing inputs
0
Terminals
Removable
Power metering, monitoring and diagnostics products for OEMs Power metering, monitoring and diagnostics products for OEMs Interfacing with an Eaton E-Series Relay, Step 6: Front Panel Navigation Interfacing with an Eaton E-Series Relay, Step 6: Front Panel Navigation Interfacing with an Eaton E-Series Relay, Step 6: Front Panel Navigation Interfacing with an Eaton E-Series Relay, Step 6: Front Panel Navigation Interfacing with an Eaton E-Series Relay, Step 6: Front Panel Navigation Interfacing with an Eaton E-Series Relay, Step 6: Front Panel Navigation Interfacing with an Eaton E-Series Relay, Step 6: Front Panel Navigation Eaton Specification Sheet - ETR-4000-2A0FA0
Feature: Transformer protection relay provides targeted transformer protection and metering for critical assets. Benefit: Reduces unplanned outages and extends transformer life, enabling more reliable feed to motors and process lines in substations and OEM equipment. Application: Suitable for industrial power systems requiring robust protection and diagnostics. Feature: Modbus RTU or DNP3 RTU over fiber optic ST enables secure, interference-free communications. Benefit: Enhances remote monitoring, fast fault isolation, and seamless SCADA integration, lowering maintenance windows and response times. Application: Control rooms and remote substations needing reliable data exchange. Feature: 8 digital inputs and 9 digital outputs plus 2 current sensing inputs offer flexible protection schemes. Benefit: Supports zone-selective interlocking and differential protection with scalable I/O for complex feeder configurations. Application: Transformer banks and multi- feeder installations in greenfield or retrofit projects. Feature: Wide power supply range (19-300 Vdc, 40-250 Vac) and 50/60 Hz operation. Benefit: Simplifies integration with diverse plant electrical systems and reduces wiring changes during upgrades. Application: Plants migrating to digital protections without reconfiguring power infrastructure. Feature: Removable terminals and semi-flush mounting streamline installation and maintenance. Benefit: Faster commissioning, easier field checks, and reduced service downtime. Application: Panel builders and service teams deploying across mixed environments.

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FAQs

Yes. The ETR-4000-2A0FA0 is designed as a transformer protection relay within Eaton's ETR family. It features removable terminals for straightforward field wiring and supports the same 8/9 I/O structure, making retrofits and upgrades compatible with existing installations without major panel redesigns.
Key specs include 8 digital inputs, 9 digital outputs, 2 current sensing inputs, and a power supply range of 19–300 Vdc or 40–250 Vac with a 50/60 Hz frequency rating. It supports Modbus RTU or DNP3 RTU communications over fiber optic ST, enabling secure remote monitoring and control within standard substation architectures.
Yes. The unit is explicitly intended for transformer protection with differential protection and current sensing inputs, zone-selective interlocking, and compatibility with SCADA protocols. It is well-suited for substations, industrial plants, and OEM applications requiring reliable transformer protection and diagnostic capabilities.
The product data indicates compliance information requires confirmation with the manufacturer. For site-specific certifications such as CE, SIL, or IP ratings, contact Eaton directly or refer to Eaton’s official specification sheet to confirm current approvals for your region and application.
The ETR-4000-2A0FA0 offers remote monitoring via Modbus RTU/DNP3 RTU over fiber, which reduces on-site maintenance visits and speeds fault diagnosis. With removable terminals and a robust protection suite, you can expect lower service costs, shorter downtime, and faster asset recovery, contributing to a favorable total cost of ownership over the transformer fleet.