Eaton ETR-4000-2A3BB1 Transformer Relay - RS485 Modbus/DNP3

Part Number: ETR-4000-2A3BB1
ETR-4000-2A3BB1
Manufacturer
Eaton
Part number
ETR-4000-2A3BB1
Category

Quick Summary

The Eaton transformer relay is a versatile protection and control device designed for transformer applications in medium‑ to high‑voltage environments. It delivers reliable protection coordination through its digital I/O, Modbus RTU or DNP3 RTU over RS485, and configurable sensing inputs. This model helps engineers reduce panel complexity by integrating protection, metering, and signaling in a single unit, addressing the common challenge of coordinating disparate devices and wiring. Depending on configuration, it can meet common industrial standards; confirm compliance with the manufacturer for CE marking, SIL‑rated options, and IP‑rated enclosures where available. The result is faster commissioning, easier maintenance, and improved asset protection, with 8 digital inputs and 9 outputs enabling robust control and monitoring alongside transformer protection.

Product Information

Extended Description

ETR-4000-2A3BB1 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-4000-2A3BB1
UPC
786679154427
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 Sensitive Ground Input URTD Interface
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
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-4000-2A3BB1
Wide power supply range and compatibility enable simple field installation across sites with varying electrical environments. The ETR-4000 supports 19-300 VDC and 40-250 VAC power rails, plus 50/60 Hz operation, ensuring the same relay can serve in both new builds and retrofits. With removable terminals and a projection mounting style, wiring and future upgrades become faster and less error prone. Communication flexibility reduces integration time and risk. Modbus RTU or DNP3 RTU over RS485 provides standard, widely supported interfaces to PLCs and SCADA networks, while IRIG-B timing and extended I/O options offer precise signaling and timing for protective schemes. Comprehensive I/O supports dedicated protection and control logic. Eight digital inputs and nine digital outputs give you room to implement metering, alarms, and interlocks without needing a separate PLC. Current sensing inputs (two) plus differential protection metering enable fast fault detection with accurate data logging. Rugged by design for industrial environments. Conformal-coated circuit boards improve reliability in harsh settings, and a robust base relay (ETR-4000) streamlines maintenance and spare‑part availability. Zone Selective Interlocking (two) accelerates clearance times and minimizes system‑wide disruption. Installation and lifecycle cost benefits. The device ships with a warranty aligned to Eaton policies; field technicians benefit from removable terminals and straightforward installation workflows, reducing labor cost and downtime.

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FAQs

Power must be off during installation. Mount the unit using its projection mounting and secure removable terminals for the wiring of 8 digital inputs and 9 digital outputs. Plan RS485 communication runs for Modbus RTU or DNP3 RTU to your PLC/SCADA. Verify the conformal coating suitability for your environment and ensure proper clearances around the relay for heat dissipation and service access.
The ETR-4000 provides RS485 based Modbus RTU or DNP3 RTU communications for integration with standard PLCs and SCADA systems. It also supports timing and signaling features via IRIG-B interfaces and offers flexible I/O to support local monitoring and control, reducing the need for additional devices in the protection scheme.
Yes. The relay supports Zone Selective Interlocking with a 2‑zone configuration to speed fault clearance and minimize system downtime. It also provides current protection and metering capabilities, enabling accurate fault data logging and improved protection coordination across transformer protection schemes.
The ETR-4000 operates from a wide power range of 19-300 VDC or 40-250 VAC, with a 50/60 Hz frequency rating. This flexibility supports installations across diverse sites and retrofits without needing separate power conversion equipment, simplifying panel design and reducing commissioning time.
Eaton’s warranty for this product follows their standard policy: one year from the date of installation or eighteen months from shipment, whichever occurs first. For ongoing support and detailed service guidance, refer to Eaton’s documentation and contact their technical support channels to confirm current terms and any region-specific requirements.