Eaton ETR-4000-2A1KA0 Transformer Relay - Protection
Part Number: ETR-4000-2A1KA0
Quick Summary
Eaton transformer relay ETR-4000-2A1KA0 provides transformer protection and monitoring for industrial power systems. Engineers often struggle with configuring protection schemes across multiple drives and feeders, which can lead to miscoordination and costly outages. This page does not list formal CE, SIL, or IP certifications; verify exact compliance ratings with Eaton. Featuring modular I/O, removable terminals, and digital interfaces such as Modbus and DNP3 TCP over fiber, it enables fast integration and reliable fault isolation. With its wide power-supply range and flexible protection logic, it helps optimize maintenance cycles and improve asset uptime. This makes it a practical choice for panel builders and OEMs seeking robust transformer protection.
Product Information
Extended Description
ETR-4000-2A1KA0 Eaton: Eaton, transformer relay, ETR-4000, Transformer protection relay,5A, 1A, 40-250 Vac, 19-300 Vdc, 8, 9, Removable, Transformer, , 19-300Vdc, 40-250Vac, 50/60 Hz Sensitive Ground Input,Trip Coil Monitor,
Product Name
Eaton transformer relay
Catalog Number
ETR-4000-2A1KA0
UPC
786679155370
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
None
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 TCP
over LC duplex fiber optic Ethernet
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
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-4000-2A1KA0
Feature → Business Impact → Application: The ETR-4000-2A1KA0 provides 8 digital inputs and 9 outputs, with removable terminals for fast field wiring and straightforward panel integration. This simplifies commissioning, reduces installation time, and lowers wiring error risk in transformer protection schemes. Typical application includes substations and plant feeders where clear tripping logic and safe device replacement are critical. Power and sensing: The unit supports dual power inputs (19-300 Vdc and 40-250 Vac) and a 50/60 Hz frequency rating, ensuring reliable operation across varying plant voltages. This reduces the need for multiple back-up modules and lowers spare parts costs, improving maintenance efficiency. Ideal for transformer protection in utility-feeder handoffs and machine rooms. Protection features and communication: Trip Coil Monitor, Sensitive Ground Input, and IRIG-B provide precise timing and fault signaling, while Modbus/DNP3 TCP over LC duplex fiber enables secure, high-speed data exchange with SCADA and PLCs; reduces cyber risk and improves diagnostics. Compatibility and installation: Removable terminals and URTD Interface option simplify retrofits and modular upgrades, enabling faster commissioning and future-proof expansion.
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FAQs
The ETR-4000-2A1KA0 uses removable terminals and supports 8 digital inputs, 9 outputs, and Modbus/DNP3 TCP over fiber for integration with PLCs and SCADA. Check that your panel has space for the unit’s dimensions (8.06 in x 8.7 in x 9.72 in) and confirm your communication backbone supports LC duplex fiber Ethernet for remote monitoring.
Key specs include power supply range of 19-300 Vdc or 40-250 Vac, frequency rating of 50/60 Hz, and current sensing inputs rated at 5A/1A with 8 inputs and 9 outputs. The device also supports Trip Coil Monitor and Differential Protection, enabling precise fault signaling and fast isolation in transformer networks.
Yes. With 8 digital inputs, 9 outputs, Modbus/DNP3 TCP communications, and protective features like trip coil monitoring and differential protection, the ETR-4000-2A1KA0 is well-suited for transformer protection in substations, switchyards, and large industrial plant feeders, offering reliable fault detection and easy integration with SCADA systems.
The product page lists Compliance as 'Contact Manufacturer', so verify CE, SIL, IP ratings, and any sector-specific standards directly with Eaton prior to procurement or integration. This ensures your installation meets your facility’s regulatory and safety requirements.
Warranty coverage is Eaton’s policy: one year from installation or 18 months from shipment, whichever occurs first. The device’s modular I/O, removable terminals, and remote monitoring capabilities support faster maintenance, lower downtime, and better asset utilization, delivering improved ROI for transformer protection projects.