Eaton ETR-4000-2A3KB0 Transformer Relay - Transformer Protection
Part Number: ETR-4000-2A3KB0
Quick Summary
Eaton transformer relay ETR-4000-2A3KB0 provides advanced transformer protection for industrial power systems. Engineers often face uptime pressure and misconfigurations that delay trips or misdetect faults in complex electrical networks. Compliance details are listed as 'Contact Manufacturer'—verify CE, SIL, and IP ratings with Eaton to ensure field suitability. With eight digital inputs, nine outputs, and wide power ranges, this relay supports scalable protection schemes and easy integration with Modbus or DNP3 TCP, delivering measurable improvements in reliability and operational efficiency for critical plant assets.
Product Information
Extended Description
ETR-4000-2A3KB0 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-4000-2A3KB0
UPC
786679153734
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
Current sensing inputs
2
Digital inputs
8
Digital outputs
9
I/O options
IRIG-B Sensitive Ground Input URTD Interface Trip Coil Monitor
Modbus / DNP3 TCP
over LC duplex fiber optic Ethernet
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
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-4000-2A3KB0
Feature → Business Impact → Application: Digital inputs and outputs (8 DI, 9 DO) enable sophisticated protection logic and fault isolation, reducing mean time to repair and improving system reliability in transformer networks. Application: substations and industrial plants needing robust protection coordination. Feature → Business Impact → Application: 2 current sensing inputs support differential and metering protection, enabling precise fault sensing and energy monitoring for tighter control. Application: utility-scale and OEM transformer panels requiring accurate protection and monitoring. Feature → Business Impact → Application: Power supply range 19-300 Vdc and 40-250 Vac simplifies cabinet wiring and stock management, lowering installation time and inventory costs. Application: retrofits and new builds with mixed supply environments. Feature → Business Impact → Application: Removable terminals and conformal coating improve field serviceability and reliability in harsh environments, reducing maintenance downtime. Application: outdoor or space-constrained installations where protection relays require rugged construction. Feature → Business Impact → Application: IRIG-B input, trip coil monitor, and zone selective interlocking (2) enable precise time stamping and fast fault isolation across coordinated protection schemes. Application: integrated protection in multi-transformer feeders. Feature → Business Impact → Application: Modbus and DNP3 TCP over LC duplex fiber optic Ethernet provide secure, high-speed communications for remote monitoring and control. Application: networked protection architectures and OEM equipment with SCADA integration.
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FAQs
The ETR-4000-2A3KB0 supports a dual power range of 19-300 Vdc and 40-250 Vac, with a 50/60 Hz frequency rating. This broad range simplifies integration across mixed installations, reduces the need for external power conditioning, and supports reliable operation in diverse industrial environments.
The relay provides 8 digital inputs, 9 digital outputs, and 2 current sensing inputs. There are no analog inputs or outputs. These I/O counts enable complex protection logic, differential protection, metering, and coordination schemes while keeping wiring straightforward for transformer protection tasks.
Yes. The device supports Modbus and DNP3 TCP communications over LC duplex fiber optic Ethernet, which allows secure, high-speed data exchange with SCADA systems and remote monitoring platforms, enhancing visibility and control across protected transformer assets.
Key installation benefits include removable terminals for simple field wiring, a conformal coating on circuit boards for moisture and corrosion resistance, and a compact yet capable protection platform designed for semi-flush mounting. These features reduce service time, improve reliability in harsh environments, and simplify retrofit projects.
The product is covered by Eaton's warranty policy, typically one year from installation or eighteen months from shipment, whichever comes first. For continued reliability, consult Eaton's support resources or contact the manufacturer to confirm current terms and obtain authorized service and replacement parts.