Eaton ETR-4000-2A3FB1 Transformer Relay - Fiber Modbus RTU
Part Number: ETR-4000-2A3FB1
Quick Summary
Eaton transformer relay ETR-4000-2A3FB1 protects transformers while enabling metering and remote data in industrial power systems. Engineers often grapple with wiring complexity and integrating protection, monitoring, and communication across disparate devices. While the datasheet notes compliance information is available from the manufacturer, this unit’s conformal coating and rugged construction support harsh environments. With eight digital inputs, nine outputs, 50/60 Hz compatibility, and a versatile power range of 19-300 Vdc or 40-250 Vac, it simplifies installation and reduces total cost of ownership. Designed for OEMs and service teams, its projection mounting and removable terminals speed commissioning while enabling fault-tolerant Modbus RTU or DNP3 RTU communications over fiber.
Product Information
Extended Description
ETR-4000-2A3FB1 Eaton: Eaton, transformer relay, ETR-4000, Transformer protection relay, Modbus RTU or DNP3 RTU , 5A, 1A, 40-250 Vac, 19-300 Vdc, 8, 9,Transformer, 19-300Vdc, 40-250Vac, 50/60 Hz, Projection, Trip Coil Monitor,Sensitive Ground Input,
Product Name
Eaton transformer relay
Catalog Number
ETR-4000-2A3FB1
UPC
786679154663
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 Fiber Optic ST
Current sensing inputs
2
Digital inputs
8
Digital outputs
9
I/O options
Trip Coil Monitor URTD Interface Sensitive Ground Input IRIG-B
Modbus / DNP3 RTU
over fiber optic ST
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
Power metering, monitoring and diagnostics products for OEMs
Power metering, monitoring and diagnostics products for OEMs
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-4000-2A3FB1
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: Eight digital inputs and nine outputs provide flexible protection logic and remote signaling. Business Impact: Reduces wiring complexity and enables more sophisticated interlocking schemes, leading to faster fault isolation and improved system reliability. Application: Transformer protection relays in substation and OEM equipment where compact I/O integration is critical. Feature: Modbus RTU or DNP3 RTU communication over fiber optic ST. Business Impact: Delivers robust, EMI-resistant remote monitoring and control, lowering communication errors and maintenance trips. Application: Plants with harsh electrical environments or long-distance data links requiring fiber connectivity. Feature: Wide power supply range—19-300 Vdc or 40-250 Vac. Business Impact: Simplifies panel design and reduces generator or multicircuit sourcing, cutting installation time and capital cost. Application: Mixed-site installations and retrofit projects where input conditions vary. Feature: Conformal coated circuit boards. Business Impact: Improves durability in high-humidity or dirty environments, reducing failure rates and service calls. Application: Outdoor substations or harsh industrial floors. Feature: 2 current sensing inputs and 5A/1A phase current options; 2 Zone Selective Interlocking; URTD and IRIG-B options. Business Impact: Enhances protection accuracy and fast, selective tripping while enabling precise time synchronization and diagnostics. Application: Power transformers in critical processes and data centers where selective clearance matters. Feature: Projection mounting and removable terminals. Business Impact: Eases installation and future maintenance, lowering commissioning time and risk of wiring errors. Application: OEM equipment, retrofit projects, and field service operations.
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FAQs
Begin with mounting on a projection-style chassis and connect eight digital inputs and nine outputs to the guard logic and alarm circuits. Use the removable terminals for clean, error-free wiring, and supply power from 19-300 Vdc or 40-250 Vac. For remote monitoring, configure Modbus RTU or DNP3 RTU over fiber ST as specified by Eaton, ensuring proper fiber termination and EMI protection. Proper labeling and adherence to the installation guide reduce commissioning time and avoid miswiring that could impact protection performance.
Key specifications include 8 digital inputs, 9 digital outputs, 2 current sensing inputs, power supply range of 19-300 Vdc or 40-250 Vac, and a frequency rating of 50/60 Hz. Communication is via Modbus RTU or DNP3 RTU over fiber optic ST, with Conformal Coated Circuit Boards for harsh environments. The device supports 5A/1A phase currents and offers 2 zone selective interlocking inputs for precise protection coordination. These specs enable accurate transformer protection, metering, and remote diagnostics in demanding installations.
Yes. The unit is designed for OEM transformer protection with fiber-based Modbus RTU or DNP3 RTU communication, providing eight digital inputs and nine outputs for protective logic and signaling. Its projection mounting and removable terminals simplify integration into OEM panels, while the fiber link minimizes EMI susceptibility. Ensure compatibility with your control system’s SCADA or DCS architecture and confirm fiber ST termination requirements per Eaton’s installation guide.
Compliance details for the ETR-4000-2A3FB1 are provided by the manufacturer. The datasheet indicates ‘Compliances: Contact Manufacturer,’ so verify CE, SIL, IP or other certifications with Eaton directly or via their official specification sheet. For project planning, request the exact standards documentation and any applicable test reports. This proactive step ensures your installation meets local regulations and your internal compliance requirements.
ROI improves through reduced wiring, fewer separate protection devices, and accelerated commissioning thanks to integrated protection, metering, and remote communication in one unit. The conformally coated boards and rugged construction lower maintenance visits in harsh environments, while detachable terminals simplify field servicing. The device’s compatibility with fiber communications minimizes EMI-related faults, potentially reducing downtime and extending transformer uptime in critical processes.