Eaton ETR-4000-2A2BB1 Transformer Relay - Modbus RTU RS485

Part Number: ETR-4000-2A2BB1
ETR-4000-2A2BB1
Manufacturer
Eaton
Part number
ETR-4000-2A2BB1
Category

Quick Summary

Eaton transformer relay ETR-4000-2A2BB1 provides robust transformer protection for industrial electrical networks. Engineers often struggle to integrate protection relays with Modbus RTU or DNP3 RTU while maintaining fast fault isolation and clear diagnostic visibility. Certification status varies; contact Eaton for CE, SIL, IP-related details and country-specific approvals. By combining 8 digital inputs and 9 outputs with versatile power options and RS485 communication, this relay supports scalable protection schemes, simplifies wiring, and reduces downtime, delivering measurable improvements in reliability and operational efficiency for substations and plant-level transformers.

Product Information

Extended Description

ETR-4000-2A2BB1 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, ProjectionSensitive Ground Input,
Product Name
Eaton transformer relay
Catalog Number
ETR-4000-2A2BB1
UPC
786679153727
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
URTD Interface Trip Coil Monitor Sensitive Ground Input IRIG-B
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 Interfacing with an Eaton E-Series Relay, Step 6: Front Panel Navigation Interfacing with an Eaton E-Series Relay, Step 6: Front Panel Navigation Interfacing with an Eaton E-Series Relay, Step 6: Front Panel Navigation Interfacing with an Eaton E-Series Relay, Step 6: Front Panel Navigation Interfacing with an Eaton E-Series Relay, Step 6: Front Panel Navigation Interfacing with an Eaton E-Series Relay, Step 6: Front Panel Navigation Interfacing with an Eaton E-Series Relay, Step 6: Front Panel Navigation Eaton Specification Sheet - ETR-4000-2A2BB1
Feature 8 digital inputs and 9 digital outputs → Business Impact Enables complex, logic-based transformer protection and zone interlocking without adding external relays; reduces wiring, speeds fault isolation, and improves diagnostic clarity. Application Substation protection panels and plant transformer feeders. Feature Modbus RTU or DNP3 RTU over RS485 → Business Impact Enables seamless integration with existing SCADA/EMS systems, enabling remote monitoring and control while preserving network bandwidth. Application Global manufacturing facilities and remote substations. Feature Power supply range 19-300 Vdc, 40-250 Vac → Business Impact Supports diverse plant power rails, simplifying global deployment and reducing integration engineering time. Application Multi-branch electrical rooms and international installations. Feature Frequency rating 50/60 Hz → Business Impact Ensures compatibility with standard utility and industrial power systems, minimizing configuration delays. Application Utility substations and data centers. Feature I/O options URTD Interface, Trip Coil Monitor, Sensitive Ground Input, IRIG-B → Business Impact Provides flexible protection schemes and precise monitoring, enabling easier testing and synchronization with external systems. Application High-reliability power protection in critical facilities. Feature Conformal coating on circuit boards → Business Impact Improves reliability in harsh environments by protecting against humidity and contaminants; extends service life. Application Outdoor or dirty industrial spaces. Feature Removable terminals and Projection mounting → Business Impact Facilitates fast installation and straightforward maintenance, reducing commissioning time. Application OEM panels and retrofit projects. Feature Warranty Eaton Selling Policy 25-000; 1 year from installation or 18 months from shipment → Business Impact Reduces total cost of ownership through a defined, predictable warranty window. Application Procurement planning and long-term service contracts.

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FAQs

Begin by powering the unit from 19-300 Vdc or 40-250 Vac as per system design. Connect the Modbus RTU or DNP3 RTU lines to the RS485 interface, ensuring proper termination and biasing per your network. Use the removable terminals and Projection mounting for a clean, serviceable installation. Verify digital inputs and outputs align with your protection scheme and perform a functional test before live operation.
Key specs include 5A and 1A phase current sensing options, 8 digital inputs, 9 digital outputs, and power-supply ranges of 19-300 Vdc or 40-250 Vac at 50/60 Hz. The unit supports 2 current sensing inputs, Modbus RTU or DNP3 RTU over RS485, and a conformal-coated PCB for reliability in harsh environments. These combine to enable precise differential and current protection monitoring.
Yes. The relay is designed for transformer protection with Modbus RTU or DNP3 RTU communications over RS485, 8 inputs and 9 outputs for logic and interlocking, and 50/60 Hz operation suitable for both data center and substation environments. Its projection mounting and removable terminals ease retrofit projects, while its rugged, conformal-coated boards support demanding industrial settings.
Compliance information is listed as 'Contact Manufacturer' in the data. For formal certifications such as CE, SIL, or IP ratings, contact Eaton directly to obtain the latest country-specific approvals and documentation. This approach ensures you have the correct regulatory evidence for your installation site and procurement process.
The relay includes a one-year warranty under Eaton policy 25-000, with coverage extending to 18 months from shipment. Its modular I/O, RS485 communications, and front-accessible terminals reduce commissioning and maintenance time, lowering lifecycle costs. The device’s robust construction and dependable protection logic translate to reduced fault downtime and improved system availability.