Eaton ETR-4000-2A1BB1 Transformer Relay - Modbus RTU/RS-485

Part Number: ETR-4000-2A1BB1
ETR-4000-2A1BB1
Manufacturer
Eaton
Part number
ETR-4000-2A1BB1
Category

Quick Summary

Eaton transformer relay ETR-4000-2A1BB1 provides transformer protection in industrial applications with Modbus RTU or DNP3 RTU over RS485. Field engineers often struggle to design protection logic, communication, and monitoring into a single reliable package. Certification expectations typically include CE marking, IP enclosure protection, and SIL-capable options, which should be confirmed with the manufacturer for this model. With 8 digital inputs, 9 digital outputs, 2 current sensing inputs, and a flexible power supply range of 19-300 Vdc or 40-250 Vac, this relay helps reduce panel space, simplify field wiring, and speed commissioning while enabling remote diagnostics and interlocking features. Its conformal-coated boards and removable terminals support harsh industrial environments and long-term reliability.

Product Information

Extended Description

ETR-4000-2A1BB1 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, Projection, Sensitive Ground Input
Product Name
Eaton transformer relay
Catalog Number
ETR-4000-2A1BB1
UPC
786679154113
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 URTD Interface Sensitive Ground Input Trip Coil Monitor
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
Projection
Voltage sensing inputs
0
Terminals
Removable
E-series protective relays E-series protective relays Programming an Eaton E-Series Relay, Step 2: Getting Started with PowerPort-E Programming an Eaton E-Series Relay, Step 2: Getting Started with PowerPort-E Programming an Eaton E-Series Relay, Step 2: Getting Started with PowerPort-E Programming an Eaton E-Series Relay, Step 2: Getting Started with PowerPort-E Programming an Eaton E-Series Relay, Step 2: Getting Started with PowerPort-E Programming an Eaton E-Series Relay, Step 2: Getting Started with PowerPort-E Programming an Eaton E-Series Relay, Step 2: Getting Started with PowerPort-E Eaton Specification Sheet - ETR-4000-2A1BB1
Feature: Modbus RTU or DNP3 RTU over RS485 communication enables remote monitoring and integration with SCADA systems. Business Impact: Improves asset visibility, reduces on-site visits, and accelerates fault isolation. Application: Transformer protection in substations and process plants. Feature: 8 digital inputs and 9 digital outputs with 2 current sensing inputs provide flexible I/O for protection schemes. Business Impact: Supports differential protection, metering, and zone selective interlocking with minimal wiring. Application: Heavy industrial transformers requiring precise control and status reporting. Feature: Power supply range of 19-300 Vdc and 40-250 Vac with 50/60 Hz compatibility ensures compatibility with diverse plant electrical systems. Business Impact: Simplifies engineering, lowers procurement complexity, and avoids additional power conditioning. Application: New installations and retrofit projects. Feature: Removable terminals and projection mounting enable fast, secure field wiring and straightforward installation. Business Impact: Reduces commissioning time and maintenance effort, improving uptime. Application: Tight panel spaces and equipment enclosures. Feature: Conformal coating on circuit boards and optional I/O options including IRIG-B, URTD Interface, Sensitive Ground Input, and Trip Coil Monitor. Business Impact: Enhances reliability in harsh environments and supports strict timing, grounding, and trip-coordination requirements. Application: Protective relay installations in challenging industrial environments across utilities and OEMs.

Get a Quick Quote for a Eaton ETR-4000-2A1BB1

Chat with us on WhatsApp - fast responses guaranteed

Need to speak with someone? We'll call you back within 2 hours during business hours

Interested in Eaton ETR-4000-2A1BB1? Enquire Now

FAQs

The ETR-4000-2A1BB1 is an Eaton transformer protection relay designed for safeguarding power transformers in industrial and utility settings. It supports Modbus RTU or DNP3 RTU over RS485 for remote monitoring and integrates protection, metering, and communications in a single unit. Typical applications include transformer protection in substations, large industrial plants, and OEM equipment enclosures.
The relay communicates status and protection data over RS485 using either Modbus RTU or DNP3 RTU protocols. This enables integration with SCADA or MMS systems, enabling remote diagnostics, digital I/O control, and centralized fault analysis. The 8 digital inputs and 9 outputs support signaling, interlocking, and trip coordination, while the 2 current sensing inputs feed differential and current-based protections.
Yes. The unit supports a dual power supply range of 19-300 Vdc or 40-250 Vac with a 50/60 Hz frequency rating, providing flexibility for diverse plant electrical systems. This compatibility simplifies installation, reduces the need for extra power conditioning equipment, and improves reliability in mixed voltage environments.
The relay features removable terminals and projection mounting for straightforward wiring and secure installation in compact cabinets. It also includes conformal-coated circuit boards for better reliability in harsh environments and multiple I/O options such as IRIG-B timing, URTD interfaces, Sensitive Ground Input, and Trip Coil Monitor, which support precise timing, grounding, and protection coordination.
Customers can access Eaton specification sheets, brochures, and training videos to aid configuration and deployment. The product page provides links to the E-Series protective relays documentation and Step-by-Step programming tutorials, along with an Eaton warranty policy. For compliance questions, contact the manufacturer to confirm applicable CE, IP, or SIL options for your installation.