Eaton ETR-4000-2A2BB0 Transformer Relay - Modbus RTU/RS-485

Part Number: ETR-4000-2A2BB0
ETR-4000-2A2BB0
Manufacturer
Eaton
Part number
ETR-4000-2A2BB0
Category

Quick Summary

Eaton transformer relay powers transformer protection in industrial power systems, enabling fast fault detection and remote monitoring. Many field devices suffer from limited diagnostics and non‑scalable communications, which drive downtime and maintenance costs. Typical certifications for transformer protection relays include CE and IP‑rated enclosures; SIL readiness varies by model—verify exact ratings on Eaton’s datasheet. By leveraging Modbus RTU or DNP3 RTU over RS‑485 and flexible I/O, this solution supports scalable protection strategies, reduces integration time, and lowers total cost of ownership through improved reliability and easier maintenance.

Product Information

Extended Description

ETR-4000-2A2BB0 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 MonitorSensitive Ground Input,
Product Name
Eaton transformer relay
Catalog Number
ETR-4000-2A2BB0
UPC
786679155332
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
Sensitive Ground Input URTD Interface Trip Coil Monitor IRIG-B
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
Semi-flush
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-4000-2A2BB0
Feature → Business Impact → Application: Modbus RTU or DNP3 RTU over RS485 enables seamless integration with SCADA systems and remote diagnostics, reducing field visits and accelerating fault isolation in substations. This translates to faster restoration times and improved system availability for mission-critical loads. Feature → 8 digital inputs and 9 digital outputs provide comprehensive protection logic and signaling capabilities, allowing precise coordination of transformer protection schemes across feeders and substations, with straightforward wiring and troubleshooting. Feature → Power supply range of 19-300 Vdc and 40-250 Vac supports flexible installation in diverse plant environments, minimizing cabling changes and enabling retrofit compatibility without extensive power infrastructure upgrades. Feature → Sensing inputs include Current Protection and Metering plus Differential Protection, delivering robust fault detection and accuracy for transformer protection, contributing to improved protective margins and reduced nuisance tripping. Feature → I/O options such as Sensitive Ground Input, URTD Interface, Trip Coil Monitor, and IRIG‑B offer extended diagnostics and time synchronization, enhancing protection reliability in complex automation architectures. Feature → Conformal coating and removable terminals support harsh environments and easy field maintenance, resulting in longer equipment life and reduced service time. Feature → Zone Selective Interlocking (ZSI) capability and modular base relay (ETR‑4000) streamline deployment in multi‑unit substations, enabling scalable protection topology with minimal reconfiguration as systems evolve.

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FAQs

The ETR-4000-2A2BB0 uses removable terminals and a semi-flush mounting method, enabling straightforward upgrade or retrofit into many existing transformer protection panels. With 8 digital inputs and 9 outputs, it accommodates current protection schemes, while RS-485 Modbus RTU or DNP3 RTU interfaces allow direct SCADA integration. For best results, verify physical clearance, terminal accessibility, and compatibility with your PowerPort-E tooling and fieldbus network.
Key specs include 8 digital inputs, 9 digital outputs, current sensing inputs of 2 channels, a power supply range of 19–300 Vdc or 40–250 Vac, and a 50/60 Hz frequency rating. Communications are via Modbus RTU or DNP3 RTU over RS-485, with 5 A / 1 A phase current options and a 8/9‑channel I/O set suitable for transformer protection logic and metering tasks.
Yes. The ETR-4000-2A2BB0 supports Modbus RTU or DNP3 RTU over RS-485, enabling reliable integration with SCADA and energy management systems. Its 8 DI / 9 DO I/O, current protection and metering features, and differential protection capability align with typical substation protection schemes, while URTD, Trip Coil Monitor, and IRIG‑B options provide advanced diagnostics and timing synchronization for critical protection logic.
Direct published certifications are not listed in the provided data; Compliances indicate to contact the manufacturer for official ratings. For regulatory alignment, verify CE markings, IP enclosure ratings, and SIL readiness on the official Eaton datasheet prior to purchase. Always confirm warranty terms and field‑installation requirements documented by Eaton to ensure compliance with your facility’s safety and reliability standards.
Expected ROI stems from reduced downtime due to faster fault detection and remote monitoring via RS‑485 communication, plus scalable protection with 8 DI/9 DO I/O and differential protection. Conformal coating and removable terminals lower maintenance costs by improving reliability in harsh environments and simplifying field servicing. The combination of flexible power supply options, IRIG‑B timing support, and Trip Coil Monitor minimizes mis‑trips and extends transformer life, delivering measurable total cost of ownership benefits.