Eaton ETR-4000-2A2BA0 Transformer Relay - RS485 Modbus

Part Number: ETR-4000-2A2BA0
ETR-4000-2A2BA0
Manufacturer
Eaton
Part number
ETR-4000-2A2BA0
Category

Quick Summary

Eaton transformer relay provides transformer protection and monitoring for distribution networks. Engineers often struggle with integration, reliable communications, and field-wiring complexity in protection schemes. Certification details vary by region; verify CE compliance, IP ratings, and SIL options with Eaton before deployment. This device is designed for transformer protection and supports Modbus RTU or DNP3 RTU over RS485 for seamless SCADA integration, enabling centralized monitoring, faster fault isolation, and reduced downtime. Its flexible I/O, wide voltage range, and removable terminals simplify installation and spare-part logistics, delivering lower total cost of ownership. In short, it combines proven Eaton reliability with adaptable protection features that align with modern industrial automation strategies.

Product Information

Extended Description

ETR-4000-2A2BA0 Eaton: Eaton, transformer relay, ETR-4000, Transformer protection relay, Modbus RTU or DNP3 RTU over RS485, 5A, 1A, 40-250 Vac, 19-300 Vdc, 8, 9,Transformer, over RS-485, 19-300Vdc, 40-250Vac, 50/60 Hz , Trip Coil Monitor,Sensitive Ground Input
Product Name
Eaton transformer relay
Catalog Number
ETR-4000-2A2BA0
UPC
786679154960
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
Semi-flush
Voltage sensing inputs
0
Terminals
Removable
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Feature: Eight digital inputs, nine digital outputs, and two current sensing inputs provide ample I/O for transformer protection and status monitoring. Business Impact: Enables comprehensive local interlocking, remote signaling, and metering without additional hardware. Application: Substation protection schemes and OEM transformer controllers benefit from reduced wiring and faster fault isolation. Feature: Modbus RTU or DNP3 RTU over RS485 enables robust industrial communications. Business Impact: Improves SCADA visibility, remote diagnostics, and coordinated protection actions. Application: Easy integration with PLCs, RTUs, and energy management systems. Feature: Wide power supply range (19–300 Vdc, 40–250 Vac) and 50/60 Hz operation simplify global deployment. Business Impact: Cuts inventory and simplifies on-site commissioning across regions. Application: Multinational facilities and mixed-voltage plants gain installation flexibility. Feature: Removable terminals and semi-flush mounting support fast, clean wiring and service. Business Impact: Reduces commissioning time and maintenance effort. Application: Field installs and retrofit projects. Feature: I/O options include Trip Coil Monitor, IRIG-B, and Sensitive Ground Input for enhanced protection fidelity. Business Impact: Elevates reliability and diagnostic capabilities. Application: Critical transformer protection with precise monitoring requirements. Feature: 1-year warranty (or 18 months from shipment) and Eaton support. Business Impact: Lower total cost of ownership through predictable service and readily available parts. Application: OEMs and end-users seeking long-term reliability.

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FAQs

The relay offers Modbus RTU over RS485 with eight digital inputs and nine digital outputs, enabling straightforward integration with existing SCADA and PLC networks. It supports remote status reporting, alarm signaling, and control commands, reducing integration time and ensuring consistent fault signaling across devices.
The wide power supply range supports installations across regions with different utility voltages, minimizing the need for multiple power modules. Plan for compatible wiring to the 50/60 Hz supply and ensure proper terminal access for removable terminals to ease field wiring and future maintenance.
Yes. The ETR-4000-2A2BA0 is designed as a transformer protection relay with current protection and metering capabilities, differential protection options, and interlocking features. Its RS485 communications and flexible I/O make it suitable for substations, switchgear, and transformer OEM integrations.
Certification details vary by region; verify applicable CE compliance, IP ratings, and SIL options with Eaton prior to deployment. The product page notes compliance as 'Contact Manufacturer'—coordinate with Eaton to confirm regional certifications and any site-specific regulatory requirements.
The Eaton ETR-4000-2A2BA0 carries a one-year warranty from installation or eighteen months from shipment, whichever comes first. Eaton offers standard after-sales support and documentation, with access to datasheets, configuration guides, and technical assistance as part of the sales package.