Eaton EMR-4000-2A1KB1 Motor Relay - IEC 61850
Part Number: EMR-4000-2A1KB1
Quick Summary
The Eaton EMR-4000-2A1KB1 motor relay enables precise motor control and protection in industrial automation applications. Engineers often struggle to integrate reliable motor protection with fast, standards-based communications in compact control panels. This device supports IEC 61850 communications over LC duplex fiber, conformal coated boards for harsh environments, and flexible I/O for metering and protection. With its rugged I/O and fiber-ready design, it helps reduce wiring, speeds commissioning, and improves overall plant uptime; value is further amplified by a built-in metering capability and scalable protection options.
Product Information
Extended Description
EMR-4000-2A1KB1 Eaton: Eaton, motor relay, 5A, 1A, Motor, over LC duplex fiber optic Ethernet, Conformal Coated Circuit Boards, 19-300Vdc, 40-250Vac, Power Protection and Metering,Current Protection and Metering, Sensitive Ground Input,
Product Name
Eaton motor relay
Catalog Number
EMR-4000-2A1KB1
UPC
786679147382
Product Length/Depth
8.06 in
Product Height
8.7 in
Product Width
9.72 in
Product Weight
9.259 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
Motor
Type
Motor relay
Analog inputs
0
Phase current
5A, 1A
Analog outputs
4
Digital inputs
8
Digital outputs
5
I/O options
Sensitive Ground Input URTD Interface IRIG-B
IEC 61850
over LC duplex fiber optic Ethernet
Modbus / DNP3 TCP
over LC duplex fiber optic Ethernet
Sensing inputs
Power Protection and Metering Voltage Protection and Metering Current Protection and Metering
Zone selective interlocking
1
Interfacing with an Eaton E-Series Relay, Step 5: Monitoring with PowerPort-E
Interfacing with an Eaton E-Series Relay, Step 5: Monitoring with PowerPort-E
Interfacing with an Eaton E-Series Relay, Step 5: Monitoring with PowerPort-E
Interfacing with an Eaton E-Series Relay, Step 5: Monitoring with PowerPort-E
Interfacing with an Eaton E-Series Relay, Step 5: Monitoring with PowerPort-E
Interfacing with an Eaton E-Series Relay, Step 5: Monitoring with PowerPort-E
Eaton Specification Sheet - EMR-4000-2A1KB1
Selling Policy 25-000 - Distribution and Control Products and Services
Integrated I/O set with eight digital inputs, five digital outputs and four analog outputs reduces external relays and wiring, cutting panel size and installation time. In practice, this enables faster commissioning and simpler maintenance in motor control panels for conveyors, pumps, and processing lines. Wide supply tolerance—19-300Vdc and 40-250Vac—and dual current capabilities of 5A and 1A minimize BOM complexity and improve resilience to voltage fluctuations, delivering reliable performance in variable plant environments. Fiber-based IEC 61850 and Modbus/DNP3 TCP communications over LC duplex Ethernet provide robust, interference-free data exchange and seamless interoperability with plant networks and substation automation. Sensing inputs for Power, Voltage and Current Protection plus metering bring real-time visibility, reducing energy waste and facilitating regulatory reporting. Zone selective interlocking supports coordinated protection with reduced fault energy, while conformal-coated circuit boards enhance reliability in dirty or humid environments. The product’s rugged construction and Eaton warranty simplify procurement and maintenance planning, delivering predictable total cost of ownership in industrial settings.
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FAQs
Consider mounting footprint, input/output counts, and voltage range. The EMR-4000-2A1KB1 provides 8 digital inputs, 5 digital outputs, 4 analog outputs, and 0 analog inputs, along with a wide 19-300Vdc / 40-250Vac range. Its compact form and conformal coating support easier retrofits in space-constrained panels while maintaining compatibility with existing sensor types and fieldbus wiring.
IEC 61850 over LC duplex fiber ensures high-speed, interference-free data exchange between control systems, relays, and substation networks. This enables seamless interoperability with energy-management and automation systems, simplifies protection coordination, and reduces integration time in plants leveraging modern microgrid and substation automation architectures.
Yes. The relay supports zone selective interlocking, with a dedicated control pathway that coordinates protection zones to minimize fault energy and shorten outage times. This is especially valuable in multi-motor drives and plant-wide protection schemes where selective tripping improves reliability and reduces electrical stress on downstream equipment.
The EMR-4000-2A1KB1 includes Power Protection and Metering, Voltage Protection and Metering, and Current Protection and Metering. It delivers real-time monitoring, event logging, and metered energy data, enabling better load management, regulatory reporting, and faster fault diagnosis in automation and process industries.
Conformal coating improves reliability in dusty or humid environments, reducing corrosion-related failures. The product is backed by Eaton’s warranty policy (1 year from installation or 18 months from shipment, whichever comes first). For critical installations, confirm compliance requirements with the manufacturer and plan preventive maintenance around the stated warranty terms to maximize uptime.