Eaton ETR-4000-2A0GA0 Transformer Relay - Modbus RTU RS-485

Part Number: ETR-4000-2A0GA0
ETR-4000-2A0GA0
Manufacturer
Eaton
Part number
ETR-4000-2A0GA0
Category

Quick Summary

Eaton transformer relay protects transformers and provides remote fault indication in industrial power systems. Engineers often battle nuisance trips, slow diagnostics, and limited visibility when safeguarding critical equipment in plants. CE compliance and SIL-ready configurations are described in Eaton's official datasheet, with full certification details available from the manufacturer. By combining robust protection logic with modular communication, this relay enables reliable transformer monitoring while supporting standards-driven installation. With differential protection, metering, and Modbus RTU over RS-485, it helps reduce downtime, accelerate fault diagnosis, and lower maintenance costs across manufacturing facilities and utilities.

Product Information

Extended Description

ETR-4000-2A0GA0 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 , Trip Coil Monitor
Product Name
Eaton transformer relay
Catalog Number
ETR-4000-2A0GA0
UPC
786679155035
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
Trip Coil Monitor IRIG-B URTD Interface
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 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-4000-2A0GA0
Power supply range and frequency: The ETR-4000-2A0GA0 accepts 19-300 VDC or 40-250 VAC with a 50/60 Hz frequency rating, simplifying global installation and reducing the number of stock-keeping units. Business impact: enables a single, versatile device across international sites, cutting cabling complexity and inventory costs. Application: OEM panel builds and industrial deployments needing wide voltage compatibility. Input/output capacity: It provides 8 digital inputs, 9 digital outputs, and 2 current sensing inputs. Impact: supports advanced protection schemes and streamlined wiring, lowering installation time and external I/O module costs. Application: transformer protection in switchgear, substations, and plant rooms. Communication and integration: Modbus RTU or DNP3 RTU over D-Sub RS-485 enables seamless SCADA integration and remote monitoring. Impact: faster fault diagnosis and centralized asset management. Application: OEMs integrating with plant-wide automation. Protection features and diagnostics: Differential protection, current protection and metering, plus Zone Selective Interlocking and Trip Coil Monitor. Impact: improves selective tripping, reduces equipment damage, and accelerates fault localization. Application: high-reliability transformer protection in critical facilities. Installation and maintenance: Removable terminals and semi-flush mounting simplify installation and serviceability. Impact: reduces commissioning time and enables easier upgrades. Application: cabinet builders and retrofit projects. Diagnostics and I/O options: IRIG-B, URTD Interface support adds time synchronization and remote testing capabilities. Impact: enhances traceability, testing efficiency, and predictive maintenance. Application: complex protection schemes in utilities and industrial networks.

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FAQs

Plan for semi-flush mounting and removable terminals to simplify wiring and service. Ensure a power supply within the 19-300 VDC or 40-250 VAC range and match to 50/60 Hz operation. The unit supports 8 digital inputs, 9 digital outputs, and 2 current sensing inputs, making it suitable for enclosure space with accessible RS-485 connections.
Yes. The relay supports Modbus RTU or DNP3 RTU over RS-485 via a D-Sub interface, enabling integration with SCADA systems and centralized protection schemes. This facilitates remote diagnostics, event logging, and coordinated protection across multiple transformers in a plant.
It includes differential protection, current protection and metering, plus Zone Selective Interlocking and a Trip Coil Monitor. These features enable fast, selective fault isolation, accurate metering data, and robust protection coordination to minimize transformer damage and downtime in critical facilities.
Power supply range is 19-300 VDC or 40-250 VAC with a 50/60 Hz rating. It provides 8 digital inputs, 9 digital outputs, and 2 current sensing inputs. Communication is via RS-485 supporting Modbus RTU or DNP3 RTU, with removable terminals for straightforward installation and maintenance.
Ideal for OEMs, panel builders, substations, and industrial plants, it reduces downtime through faster fault detection and remote diagnostics. The RS-485 Modbus integration supports centralized monitoring and predictive maintenance, leading to lower maintenance costs and improved asset uptime over the life of transformer installations.