Eaton ETR-4000-2A0BB0 Transformer Relay - Modbus RS-485

Part Number: ETR-4000-2A0BB0
ETR-4000-2A0BB0
Manufacturer
Eaton
Part number
ETR-4000-2A0BB0
Category

Quick Summary

The Eaton transformer relay ETR-4000-2A0BB0 provides transformer protection and monitoring for substations and OEM equipment. It helps reduce commissioning time by centralizing protection logic, alarms, and digital I/O in a single, scalable package. Compliances are not listed in the spec; contact Eaton for the official CE, SIL, or IP ratings and any region-specific approvals. With Modbus RTU or DNP3 RTU over RS-485, eight digital inputs, nine digital outputs, and a flexible power range of 19-300 Vdc or 40-250 Vac at 50/60 Hz, it supports reliable, future-ready protection in demanding industrial environments.

Product Information

Extended Description

ETR-4000-2A0BB0 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,
Product Name
Eaton transformer relay
Catalog Number
ETR-4000-2A0BB0
UPC
786679155349
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
Conformal Coated Circuit Boards
Communication
Modbus RTU or DNP3 RTU over RS485
Current sensing inputs
2
Digital inputs
8
Digital outputs
9
I/O options
IRIG-B Trip Coil Monitor URTD Interface
Modbus / DNP3 RTU
over 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-4000-2A0BB0 Selling Policy 25-000 - Distribution and Control Products and Services
Modbus RTU or DNP3 RTU over RS-485 is a core communication capability that simplifies integration with SCADA and protection schemes, reducing wiring and expediting commissioning while enabling centralized monitoring and diagnostics. Eight digital inputs and nine digital outputs consolidate protection logic, alarms, and signaling in a single unit, lowering cabling costs and panel footprint while enabling faster fault notification and coordinated trips. Two current sensing inputs support differential protection and metering, delivering precise fault detection and energy analytics without extra hardware. The extensive power supply range (19-300 Vdc / 40-250 Vac) and 50/60 Hz compatibility provide installation flexibility across plants and substations, while removable terminals and semi-flush mounting streamline installation and retrofits. Conformal coating elevates reliability in harsh environments. I/O options, such as IRIG-B Trip Coil Monitor and URTD interface, enable advanced time synchronization and trip coordination. Zone selective interlocking further enhances selective tripping, reducing collateral damage and downtime. The combination of a robust feature set and Eaton’s ecosystem supports maintenance standardization, easier warranty management, and scalable protection across multiple transformers.

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FAQs

Installation begins by mounting the unit in a semi-flush configuration using the removable terminals to simplify wiring. Connect the eight digital inputs and nine outputs to your protection logic, then wire the Modbus RTU or DNP3 RTU RS-485 communication to your SCADA. Power the unit with the 19-300 Vdc or 40-250 Vac supply, ensuring 50/60 Hz operation. Verify polarity and labeling, perform a quick functional test, and document the configuration for future maintenance.
The relay supports differential protection and current protection with metering, two current sensing inputs, eight digital inputs, and nine digital outputs for alarms and control. It also includes I/O options like IRIG-B Trip Coil Monitor and URTD Interface, enabling precise trip coordination and time synchronization for coordinated protection across devices in substations and OEM assemblies.
Yes. Its transformer protection focus, RS-485 communication (Modbus RTU or DNP3 RTU), multiple digital I/O, and flexible power supply make it well-suited for substations and OEM equipment. The unit’s modular I/O and zone selective interlocking support scalable protection schemes, enabling reliable transformer protection, rapid fault isolation, and streamlined integration with existing protection architectures.
The spec excerpt lists Compliances as Contact Manufacturer. There are no public certifications shown in the provided data. For CE, SIL, IP ratings, or region-specific approvals, consult Eaton’s datasheet or contact Eaton directly to obtain the official certification statements applicable to your region and application.
A single protection device with integrated diagnostics reduces field wiring, speeds up commissioning, and simplifies maintenance planning. The ability to monitor faults remotely via Modbus or DNP3 from RS-485 improves uptime, while conformal coating and rugged construction lower environmental risk. The warranty and compatibility with the base ETR-4000 family streamline spare parts availability, helping lower lifecycle costs and improve return on investment.