Eaton ETR-4000-2A2IA0 Transformer Relay - 5A/1A

Part Number: ETR-4000-2A2IA0
ETR-4000-2A2IA0
Manufacturer
Eaton
Part number
ETR-4000-2A2IA0
Category

Quick Summary

Eaton transformer relay ETR-4000-2A2IA0 provides reliable transformer protection for industrial power systems. Engineers often struggle with nuisance trips and unplanned downtime in live electrical networks, which can ripple into production losses and safety concerns. Regulatory compliance varies by region; verify CE, SIL, and IP ratings with the manufacturer. With RS-485 and Ethernet connectivity and a flexible power range of 19-300 Vdc / 40-250 Vac, it supports scalable protection schemes and easy integration with modern control architectures. This combination simplifies retrofits and ongoing maintenance while meeting demanding industry standards.

Product Information

Extended Description

ETR-4000-2A2IA0 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 , Trip Coil Monitor,Sensitive Ground Input,
Product Name
Eaton transformer relay
Catalog Number
ETR-4000-2A2IA0
UPC
786679154014
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
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
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
Semi-flush
Voltage sensing inputs
0
Terminals
Removable
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Feature: Eight digital inputs, nine outputs, and two current sensing inputs enable complex protection logic and fast fault signaling. Business Impact: This capability reduces external I/O wiring, shortens installation time, and improves fault isolation for critical transformers. Application: Ideal for transformer protection in substations, data centers, and manufacturing facilities where reliability matters. Feature: RS-485 Modbus RTU and Ethernet TCP communications provide remote monitoring and integration with SCADA systems. Business Impact: Operators gain visibility into transformer health and protective actions, enabling faster response and centralized control. Application: Suitable for distributed protection schemes and digital plant modernization. Feature: URTD interface, trip coil monitor, sensitive ground input, and IRIG-B time reference. Business Impact: Enhances timing accuracy, trip accuracy, and protection coordination across zones. Application: Essential in high-speed protection deployments and time-synced control rooms. Feature: Broad power supply range and 50/60 Hz operation. Business Impact: Enables retrofit compatibility and seamless integration with existing plants. Application: Supports retrofits in legacy facilities and new builds with mixed power environments. Feature: Zone selective interlocking (2) and removable terminals with semi-flush mounting. Business Impact: Limits outage scope during faults and simplifies field maintenance. Application: Critical in bus protection, switchgear, and industrial power distribution.

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FAQs

Begin with panel planning to accommodate the 8 inputs and 9 outputs, then mount using the semi-flush method. Use removable terminals to simplify wiring, and connect the RS-485 Modbus RTU and Ethernet TCP lines for SCADA integration. Follow Eaton's installation guidance and ensure proper protection coordination with the zone interlocking settings.
Power supply range is 19-300 Vdc or 40-250 Vac, operating at 50/60 Hz. It features 8 digital inputs, 9 outputs, and 2 current sensing inputs. Communications include RS-485 Modbus RTU and Ethernet TCP. Phase currents supported are 5A and 1A, with compatible I/O options for Trip Coil Monitor and IRIG-B timing.
Yes. The relay provides Modbus RTU over RS-485 and Modbus TCP over Ethernet, enabling seamless integration with existing SCADA, DCS, and protection schemes. This supports remote diagnostics, centralized control, and coordinated protection across multiple transformers and switchgear.
The warranty follows Eaton’s policy: one year from the date of installation or eighteen months from the date of shipment, whichever comes first. This coverage helps safeguard installation costs and provides assurance during early field use and commissioning.
Deploying this relay delivers higher transformer uptime, faster fault isolation, and reduced nuisance trips through coordinated protection and zone selective interlocking. Its integrated communications, broad power range, and modular I/O simplify retrofits and future-proof plant modernization, supporting a measurable return on investment through improved reliability and easier SCADA integration.