Eaton Transformer Relay ETR-4000-2A3GB1 - RS-485 Modbus

Part Number: ETR-4000-2A3GB1
ETR-4000-2A3GB1
Manufacturer
Eaton
Part number
ETR-4000-2A3GB1
Category

Quick Summary

Eaton transformer relay ETR-4000-2A3GB1 provides transformer protection for industrial power systems and substations. Integrating protection with Modbus RTU or DNP3 RTU over RS-485 can be complex and slow without a purpose-built device. Note: public data does not list CE, SIL, or IP certifications; please confirm with Eaton for your region. With a wide power-supply range of 19–300 Vdc and 40–250 Vac, 50/60 Hz operation, and durable conformal coating, this relay is engineered for reliability in challenging environments. The unit’s 8 digital inputs and 9 outputs support scalable protection schemes, while flexible mounting and removable terminals simplify installation. For businesses, this translates into faster commissioning, reduced wiring, and improved protection coordination across transformer assets.

Product Information

Extended Description

ETR-4000-2A3GB1 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, ProjectionSensitive Ground Input
Product Name
Eaton transformer relay
Catalog Number
ETR-4000-2A3GB1
UPC
786679154779
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 D-SUB / 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
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
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-4000-2A3GB1
Feature: 8 digital inputs and 9 digital outputs enable comprehensive protection logic and remote signaling. Business Impact: Enables complex interlocks and status reporting with minimal panel footprint, reducing wiring complexity and installation time. Application: Transformer protection in switchgear and distribution panels where space is at a premium and fast fault signaling is required. Feature: Modbus RTU or DNP3 RTU over D-Sub / RS-485 compatibility. Business Impact: Seamless integration with SCADA and energy management systems, improving visibility and control across the plant. Application: Substation automation and industrial automation networks requiring reliable RS-485 communications.Feature: Wide power supply range 19-300 Vdc / 40-250 Vac and 50/60 Hz. Business Impact: Flexible sourcing and easier integration with existing power rails, reducing spare-part inventories and commissioning time. Application: New builds or retrofits in environments with varying supply conditions. Feature: Conformal coated circuit boards and rugged construction. Business Impact: Higher resistance to dust, moisture, and chemical exposure, extending mean time between maintenance. Application: Harsh industrial environments such as conveyors, mining, and outdoor substations. Feature: 2 current sensing inputs plus 8 inputs and 9 outputs. Business Impact: Enhanced protection accuracy and metering capabilities without adding external sensors. Application: Differential protection and metering in transformer protection schemes. Feature: I/O options including IRIG-B interface and Sensitive Ground Input. Business Impact: Enables precise timing and fault detection for critical protection schemes, reducing misoperation risk. Application: High-availability power protection in critical infrastructure. Feature: Removable terminals and projection mounting. Business Impact: Simplified installation, faster maintenance, and easy field upgrades. Application: On-site retrofit projects and modular panel design where serviceability matters. Feature: 8–9 I/O topology with 19–300 Vdc / 40–250 Vac inputs. Business Impact: Flexible configurations to match existing protection architectures, lowering the need for rewiring and reprogramming. Application: Migrating legacy protection relays to modern, programmable protection with minimal disruption.

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FAQs

Install the ETR-4000-2A3GB1 using the removable terminals for quick field wiring and use the Projection mounting method for secure panel integration. Plan for 8 digital inputs and 9 outputs, plus the two current sensing inputs, to align with your transformer protection scheme. Consulting the Eaton spec sheet will help map inputs to protection logic and ensure proper grounding.
Key specs include 8 digital inputs, 9 outputs, 2 current sensing inputs, Modbus RTU or DNP3 RTU over RS-485, and a power supply range of 19-300 Vdc or 40-250 Vac at 50/60 Hz. It uses conformal coated circuit boards for reliability in harsh environments and supports IRIG-B and other I/O options for advanced timing and signaling.
Yes. The ETR-4000-2A3GB1 supports both Modbus RTU and DNP3 RTU over RS-485 via a D-Sub interface, enabling integration with common SCADA and protection architectures. When configuring, ensure proper addressing and baud rate matching with the host system to avoid communication errors and protect against misoperations.
The relay offers differential and current protection and metering options, multiple IO configurations, and zone selective interlocking. With 50/60 Hz operation and a flexible power supply, it supports scalable protection schemes for transformers in substations, manufacturing lines, and power distribution panels, improving protection coordination and reducing downtime.
Eaton’s policy provides a one-year warranty from installation or 18 months from shipment, whichever comes first. For maintenance, follow the recommended inspection of connectors, verify the conformal coating integrity in harsh environments, and schedule periodic communication checks with Modbus/DNP3 networks to ensure ongoing reliability.