Eaton EMR-4000-2A0LB0 Motor Relay - Fiber Optic Ethernet
Part Number: EMR-4000-2A0LB0
Quick Summary
EMR-4000-2A0LB0 motor relay by Eaton controls motors and protects industrial power systems in automation panels. It addresses the common challenges of complex integration, unreliable uptime, and excessive field wiring by delivering a compact, integrated protection and control solution. Typical certifications to verify include CE marking for European compliance, IP ratings for enclosure protection, and SIL-level safety where applicable. With fiber optic Modbus/DNP3 TCP, conformal coating on circuit boards, and built-in current and voltage metering, this device supports faster commissioning, safer operation, and a clear path to scalable automation in modern facilities.
Product Information
Extended Description
EMR-4000-2A0LB0 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
Product Name
Eaton motor relay
Catalog Number
EMR-4000-2A0LB0
UPC
786679146958
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
IRIG-B URTD Interface
Modbus / DNP3 TCP
over LC duplex fiber optic Ethernet
Sensing inputs
Power Protection and Metering Current Protection and Metering Voltage Protection and Metering
Zone selective interlocking
1
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 - EMR-4000-2A0LB0
Conformal coated circuit boards deliver reliability in dusty, humid, or chemical environments, reducing corrosion-driven failures and maintenance cycles while extending service life in outdoor substations or harsh factory floors. This translates to lower maintenance costs and higher equipment availability in continuous production lines. The wide voltage range of 19-300 Vdc and 40-250 Vac enables a single device to accommodate mixed plant power, eliminating the need for multiple relays and simplifying spare parts forecasting for maintenance teams. With 8 digital inputs, 5 digital outputs, and 4 analog outputs, engineers can implement local logic, signaling, and metering without additional PLC hardware, accelerating commissioning and reducing panel footprint. Modbus/DNP3 TCP over LC duplex fiber optic Ethernet provides EMI immunity and long-distance reliability, streamlining integration across distributed systems and improving cyber-physical security. Sensing options cover Power, Current, and Voltage protection and metering, enabling real-time monitoring and safer startup/shutdown sequences which minimize risk during transitions. Zone selective interlocking (1) enhances protection coordination, reducing nuisance trips and improving safety in multi-feeder applications. Optional IRIG-B URTD interface supports precise time synchronization for coordinated control and accurate event logging in SCADA. The conformal coating and rugged assembly align with Eaton’s warranty terms, delivering predictable performance over the product lifecycle and supporting a lower total cost of ownership.
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FAQs
Begin by verifying supply voltages fall within the 19-300 Vdc or 40-250 Vac ranges and confirm IO requirements align with your control scheme. Mount the device in a protected enclosure, connect 8 digital inputs, 5 digital outputs, and 4 analog outputs to the intended sensors and actuators, and establish Modbus/DNP3 TCP communication over fiber to your PLC or SCADA. Use the IRIG-B option if precise time stamping or synchronization is required. Finally, perform a staged commissioning to validate motor control, protection sequencing, and metering readings before going into full automation mode.
Key specs include a phase current rating of 5 A, with 1 A available for specific protective or signaling paths, and dual voltage compatibility covering 19-300 Vdc and 40-250 Vac. The device includes 8 digital inputs, 5 digital outputs, and 4 analog outputs to support local logic and metering functions. Communication is via Modbus or DNP3 TCP over fiber optic Ethernet, providing reliable, EMI-immune data exchange for protection schemes and remote monitoring.
Yes. The unit supports Zone Selective Interlocking (1) to improve selectivity and reduce nuisance trips in multi-feeder setups, which is advantageous for complex manufacturing lines. Its sensing capabilities cover Power, Current, and Voltage protection and metering, enabling accurate energy monitoring and protective control. Combined with fiber optic communications and multiple IO channels, it is well-suited for integrated protection, metering, and coordinated control in modern production environments.
Certification verification for this product typically involves confirming CE marking for European compliance, appropriate IP enclosure protection, and SIL safety considerations where required by your application. Since compliances are provided by the manufacturer, consult Eaton’s documentation or support for the latest certificates and test reports. In your procurement brief, request explicit confirmation of the certifications relevant to your geography, industry, and end-use environment to ensure regulatory alignment.
Maintenance is minimized by the conformal coated circuits which resist moisture and dust, reducing corrosion-related failures. The device’s integrated metering and protection features lower the need for additional external protection panels and wiring, shortening commissioning time and enabling quicker fault diagnosis. Combined with Eaton’s warranty terms, this leads to higher uptime, lower spare parts costs, and a favorable return on investment through reduced downtime and streamlined panel design.