Eaton ETR-4000-2A3EA1 Transformer Relay - Profibus-DP RS485

Part Number: ETR-4000-2A3EA1
ETR-4000-2A3EA1
Manufacturer
Eaton
Part number
ETR-4000-2A3EA1
Category

Quick Summary

Eaton transformer relay is a protective device designed to monitor transformer health and safeguard electrical networks in industrial facilities. Engineers often face unexpected transformer faults that trigger costly outages and slow maintenance workflows. Industry standards for transformer protection commonly reference CE, SIL, and IP-rated enclosures; consult Eaton for exact certifications on this model. With eight digital inputs, nine digital outputs, and a dual power range of 19-300 Vdc and 40-250 Vac, it enables faster installation, improved diagnostics, and lower lifecycle costs. The built-in Profibus-DP over RS-485 interface supports seamless PLC integration and centralized protection strategies. For design engineers, the device's projection mounting and removable terminals simplify field wiring and future upgrades. Fall-back support and warranty details reflect Eaton's commitment to reliable, long-term protection in mission-critical applications.

Product Information

Extended Description

ETR-4000-2A3EA1 Eaton: Eaton, transformer relay, ETR-4000, Transformer protection relay, Profibus-DP over D-SUB / RS485, 5A, 1A, 40-250 Vac, 19-300 Vdc, 8, 9,Transformer, over D-Sub / RS-485, 19-300Vdc, 40-250Vac, 50/60 Hz, Projection,Sensitive Ground Inpu
Product Name
Eaton transformer relay
Catalog Number
ETR-4000-2A3EA1
UPC
786679154588
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
Profibus-DP over D-SUB / RS485
Current sensing inputs
2
Digital inputs
8
Digital outputs
9
I/O options
Sensitive Ground Input URTD Interface IRIG-B Trip Coil Monitor
Phase current
5A, 1A
PROFIBUS-DP
over D-Sub / RS-485
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 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-4000-2A3EA1
Feature: 8 digital inputs and 9 digital outputs, two current sensing inputs, and selectable phase currents of 5A and 1A. Business Impact: Expands protection logic, reduces reliance on external relays, and accelerates fault isolation for faster troubleshooting. Application: Transformer protection schemes in switchgear and motor control centers where compact, multi-function protection is required. Feature: Power supply range 19-300 Vdc and 40-250 Vac, plus 50/60 Hz compatibility. Business Impact: Simplifies power architecture and inventory management, enabling mixed-supply environments without additional converters. Application: Industrial facilities with diverse control systems and varying voltage rails. Feature: PROFIBUS-DP communication over D-Sub / RS-485. Business Impact: Streamlines PLC integration, enables remote diagnostics, and supports centralized protection logic. Application: Plant-wide automation networks that require reliable, field-proven communication. Feature: I/O options including Sensitive Ground Input, URTD Interface, IRIG-B time sync, and Trip Coil Monitor. Business Impact: Enhanced monitoring accuracy, precise time stamping, and robust trip verification. Application: Critical transformer protection and synchronized protection schemes in substations and large drives. Feature: Zone selective interlocking (2 zones) and differential protection with current protection and metering. Business Impact: Improves selective tripping, reduces outage duration, and speeds fault localization. Application: Large transformers and high-availability installations where swift isolation is essential. Feature: Removable terminals and projection mounting. Business Impact: Eases wiring, maintenance, and future upgrades, cutting commissioning time. Application: OEM panel builds and field retrofits in controlled environments. Feature: Warranty and support under Eaton policy (25-000) with comprehensive documentation. Business Impact: Predictable after-sales support and reduced risk during long-term operation. Application: OEMs and end users seeking reliable transformer protection with clear service terms.

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FAQs

Yes. The ETR-4000-2A3EA1 includes Profibus-DP over RS-485 communication, enabling seamless integration with most PLCs and plant networks. It reduces wiring complexity by consolidating protection and monitoring I/O in a single device, while preserving compatibility with existing fieldbus infrastructure. For best results, verify connector types and protocol settings during commissioning and ensure host PLC supports DP over RS-485 addressing.
The relay features 8 digital inputs, 9 digital outputs, and 2 current sensing inputs with selectable phase currents of 5A and 1A. It operates on a dual power range of 19-300 Vdc and 40-250 Vac, with a 50/60 Hz frequency rating. This combination supports mixed DC/AC control systems, simplifies wiring, and reduces the need for multiple power supplies in a single panel.
This relay is ideal for transformer protection in switchgear, substations, and motor control centers. Its 8/9 I/O, Profibus-DP communication, and zone selective interlocking enable precise fault detection, fast isolation, and centralized protection strategies. It also supports time synchronization and differential protection for high-availability installations in critical process environments.
Eaton typically provides certifications and compliance documentation for transformer protection relays; however, exact certifications (for example CE, SIL, or IP ratings) should be confirmed with the manufacturer for this model. Review the product datasheet and installation guides during procurement, and coordinate with your compliance team to ensure site-specific standards and enclosure ratings are met.
Expected ROI comes from reduced downtime, fewer external relays, and faster fault diagnosis, which translate to lower maintenance costs and improved plant availability. Maintenance considerations include verifying the integrity of removable terminals, routine testing of protection functions, and keeping firmware or configuration up to date via Eaton resources and datasheets.