Eaton ETR-5000-2A2CB0 Transformer Relay - Modbus TCP

Part Number: ETR-5000-2A2CB0
Manufacturer
Eaton
Part number
ETR-5000-2A2CB0

Quick Summary

The Eaton transformer relay is a protective device that monitors and protects transformer circuits in industrial power systems. Engineers often struggle with timely fault detection and coordinated tripping across multiple feeders, which can drive outages and maintenance costs. Typical approvals engineers look for include SIL, CE and IP ratings where applicable; confirm the exact certifications for this model with Eaton. With Modbus TCP over Ethernet RJ45, current sensing inputs, 8 digital inputs, 9 outputs, and a 19-300 Vdc / 40-250 Vac power range, this device supports reliable protection while enabling fast, data-driven decisions. It blends robust protection logic with flexible communication, helping teams reduce mean time to repair and improve grid reliability.

Product Information

Extended Description

ETR-5000-2A2CB0 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 ,Sensitive Ground Input,Trip Coil Monitor
Product Name
Eaton transformer relay
Catalog Number
ETR-5000-2A2CB0
UPC
786679156094
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
IRIG-B URTD Interface Sensitive Ground Input Trip Coil Monitor
Modbus / DNP3 RTU
over Ethernet RJ-45
Phase current
5A, 1A
Sensing inputs
Current Protection and Metering Power Protection and Metering Voltage 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
1
Terminals
Removable
Feature → Business Impact → Application. The ETR-5000-2A2CB0 uses eight digital inputs and nine outputs to support complex interlock schemes, enabling precise fault isolation and reducing unnecessary trips in demanding industrial environments. This translates to lower downtime and safer operation across large motor drives and transformer banks, with straightforward integration into existing control architectures using Modbus TCP over Ethernet RJ45. Feature → Business Impact → Application. Two current-sensing inputs provide accurate load and fault current data, enabling trend analysis and proactive maintenance programs that cut unexpected outages and extend equipment life. Use this in transformer protection applications to optimize protection settings and achieve quicker fault localization. Feature → Business Impact → Application. The device runs on a wide power supply range (19-300 Vdc, 40-250 Vac) and features removable terminals for quick field installation, reducing commissioning time and minimizing wiring errors in panel builds. This facilitates semi-flush mounting and simplifies retrofits in compact control cabinets. Feature → Business Impact → Application. Conformal coated circuit boards and IRIG-B / Trip Coil Monitor options enhance reliability in harsh environments, improving uptime in substations and industrial plants. This is especially valuable when deploying in environments with temperature variation, humidity, or vibration. Feature → Business Impact → Application. With a base relay (ETR-4000) and a multi-communication footprint including Modbus TCP and DNP3 TCP/UDP, teams can standardize protection logic across legacy and modern equipment, lowering training costs and accelerating project timelines. In practice, this supports scalable protection strategies for power distribution networks, data centers, and process industries while aligning with maintenance best practices.

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FAQs

Installation starts with confirming panel space for a semi-flush mounting configuration and ensuring removable terminals are accessible for quick wiring changes. Connect eight digital inputs and nine outputs to the control network, then tie the two current-sensing inputs to the monitored conductors. Ensure the power supply range of 19-300 Vdc or 40-250 Vac is supplied. Verify proper grounding and use conformal coated boards in harsh environments to maximize reliability.
The unit provides eight digital inputs, nine digital outputs, and two current-sensing inputs, enabling robust protection logic and status signaling. It supports Modbus TCP or DNP3 TCP/UDP over Ethernet RJ45 for SCADA integration, with IRIG-B interface options and Trip Coil Monitor capabilities to enhance fault coordination and monitoring accuracy across transformer circuits.
Yes, Modbus TCP over Ethernet RJ45 is supported, enabling seamless integration with modern SCADA systems and data historians. The same platform also supports DNP3 TCP/UDP where required, providing flexibility for mixed-control architectures. This compatibility helps standardize protection logic across legacy and new equipment, reducing engineering effort and training time.
Eaton provides multiple resources including specification sheets and illustrative guides. The ETR-5000-2A2CB0 datasheet is available as a PDF, and there are YouTube tutorials titled Programming an Eaton E-Series Relay, Step 3: Getting Started with the E-Series Wizard. Accessing these materials supports faster commissioning, script development, and validation of protection settings in a controlled environment.
The product is covered under Eaton’s warranty policy 25-000, offering one year from the date of installation or eighteen months from shipment, whichever occurs first. For ongoing support, refer to Eaton's service notes and scheduled maintenance guidance to optimize uptime and ensure continued compliance with protection requirements in your facility.