Eaton ETR-4000-2A1CB1 Transformer Relay - Modbus TCP
Part Number: ETR-4000-2A1CB1
Quick Summary
Eaton transformer relay ETR-4000-2A1CB1 protects and monitors transformer assets in industrial plants. This device streamlines protection strategies by integrating powerful sensing, metering, and fault detection in a single relay. Engineers often struggle with aligning protection relays to Modbus TCP or DNP3 networks while maintaining fast fault isolation and minimizing control-system disruption. The ETR-4000-2A1CB1 offers 8 digital inputs, 9 outputs, 2 current-sensing inputs, and a broad power-supply range of 19-300 Vdc or 40-250 Vac, simplifying installation across varied sites. With conformal coating and projection mounting, it withstands harsh environments. Eaton backs it with a standard warranty and reliable service, while Ethernet-based communication enables scalable monitoring and reduced total cost of ownership for transformer protection relay implementations.
Product Information
Extended Description
ETR-4000-2A1CB1 Eaton: Eaton, transformer relay, ETR-4000, Transformer protection relay,5A, 1A, 40-250 Vac, 19-300 Vdc, 8, 9,Transformer, over Ethernet RJ-45,19-300Vdc, 40-250Vac, 50/60 Hz, Projection,Sensitive Ground Input,Trip Coil Monitor
Product Name
Eaton transformer relay
Catalog Number
ETR-4000-2A1CB1
UPC
786679154199
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 TCP or DNP3 TCP/UDP over Ethernet RJ45
Current sensing inputs
2
Digital inputs
8
Digital outputs
9
I/O options
Sensitive Ground Input Trip Coil Monitor URTD Interface IRIG-B
Modbus / DNP3 RTU
over Ethernet RJ-45
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
Power metering, monitoring and diagnostics products for OEMs
Power metering, monitoring and diagnostics products for OEMs
Introduction to Eaton's E-Series Relay, Step 1: Physical Connections
Introduction to Eaton's E-Series Relay, Step 1: Physical Connections
Introduction to Eaton's E-Series Relay, Step 1: Physical Connections
Introduction to Eaton's E-Series Relay, Step 1: Physical Connections
Introduction to Eaton's E-Series Relay, Step 1: Physical Connections
Introduction to Eaton's E-Series Relay, Step 1: Physical Connections
Introduction to Eaton's E-Series Relay, Step 1: Physical Connections
Eaton Specification Sheet - ETR-4000-2A1CB1
Feature → Business Impact → Application: Eight digital inputs, nine outputs, and two current-sensing inputs enable comprehensive transformer protection and metering, delivering richer event data, faster fault signaling, and precise control of isolation sequences. Application: substations and plant feeders that require coordinated protection with SCADA and MES systems, reducing nuisance trips and improving selectivity. Feature → Business Impact → Application: Wide power-supply range (19-300 Vdc, 40-250 Vac) and 50/60 Hz compatibility provide installation flexibility across varied facilities, minimizing wiring changes and stock requirements. Application: mixed-voltage environments and upgrades where standardizing on a single relay simplifies maintenance. Feature → Business Impact → Application: Modbus TCP or DNP3 TCP/UDP over Ethernet RJ-45 enables seamless integration with existing control networks, facilitating scalable monitoring and faster diagnostic workflows. Application: OEMs and installers seeking smooth SCADA integration and reduced commissioning time. Feature → Business Impact → Application: Conformal coated circuit boards and removable terminals improve field reliability and ease of maintenance, cutting downtime during servicing. Application: outdoor installations and harsh environments where frequent servicing is impractical. Feature → Business Impact → Application: I/O options including Sensitive Ground Input, Trip Coil Monitor, URTD Interface, and IRIG-B time synchronization expand protection capabilities and precise timing, enabling advanced protection schemes. Application: complex transformer protection with time-critical coordination. Feature → Business Impact → Application: Zone Selective Interlocking (ZSI) reduces fault energy and accelerates selective isolation, improving network stability. Application: utility feeders and industrial networks requiring rapid, selective disconnection. Feature → Business Impact → Application: 5 A / 1 A phase current sensing and eight inputs with nine outputs support robust metering and protection counts, enabling accurate fault location and faster restoration. Application: transformer protection in substations and factories implementing tight control loops. Feature → Business Impact → Application: Conformal coating plus rugged mechanical design provides long service life and predictable maintenance, lowering lifecycle cost. Application: environments with dust, moisture, or temperature swings where reliability is critical.
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FAQs
The ETR-4000-2A1CB1 is designed with removable terminals and projection mounting for straightforward retrofit alongside Eaton E-Series components. It provides eight digital inputs, nine outputs, and two current-sensing inputs, enabling a drop-in upgrade path that preserves existing wiring footprints while expanding protection logic and metering capabilities. Ensure your cabinet has space for the device footprint and that your control network supports Modbus TCP or DNP3 over Ethernet RJ45 for seamless integration.
Key specs include eight digital inputs, nine outputs, two current-sensing inputs, a power supply range of 19-300 Vdc or 40-250 Vac, and operation at 50/60 Hz. The unit supports Modbus TCP or DNP3 TCP/UDP over Ethernet, features conformal coated circuit boards, and offers protection and metering functions suitable for transformer protection schemes in industrial environments.
Yes. The ETR-4000-2A1CB1 is purpose-built for transformer protection with current protection and metering capabilities, differential protection, and Zone Selective Interlocking. Its rugged construction, multiple communication options, and time-coordinated inputs support fast fault isolation and reliable operation in substations and industrial feeders.
According to the datasheet, compliances are managed by the manufacturer (Contact Manufacturer). This device includes conformal coating for environmental resilience and Eaton’s standard warranty terms. For specific regional certifications (CE, SIL, IP), verify with Eaton or your local distributor prior to deployment, especially for hazardous area or rail applications.
Maintenance is minimized by rugged construction, conformal coating, and removable terminals that simplify field servicing. The integrated protection, metering, and remote diagnostics via Modbus TCP/DNP3 reduce site visits and downtime, delivering faster fault isolation and lower total cost of ownership over the asset’s lifecycle.