Eaton EMR-4000-2A0FB1 Motor Relay - Over fiber optic ST
Part Number: EMR-4000-2A0FB1
Quick Summary
The Eaton EMR-4000-2A0FB1 motor relay is a robust solution for motor protection and monitoring in industrial drives. This device helps engineers consolidate protection, metering, and control I/O into a single platform, reducing wiring complexity and speeding commissioning. While formal certifications should be confirmed with the manufacturer, the unit features conformal coated circuit boards and rugged construction suitable for harsh environments. The wide voltage range (19-300 Vdc / 40-250 Vac) and fiber optic communication enable reliable, failsafe operation in modern automation architectures. For control system integrators, the EMR-4000-2A0FB1 delivers improved visibility, easier troubleshooting, and a clear path to scalable protection strategies using motor protection relays that align with industry best practices.
Product Information
Extended Description
EMR-4000-2A0FB1 Eaton: Eaton, motor relay, 5A, 1A, Motor, over fiber optic ST, Conformal Coated Circuit Boards, 19-300Vdc, 40-250Vac, Voltage Protection and Metering,Current Protection and Metering,Power Protection and Metering,
Product Name
Eaton motor relay
Catalog Number
EMR-4000-2A0FB1
UPC
786679147580
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 RTU
over fiber optic ST
Sensing inputs
Voltage Protection and Metering Current Protection and Metering Power 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-4000-2A0FB1
Feature → Business Impact → Application: Eight digital inputs and five digital outputs allow direct connection to PLCs and I/O networks, enabling tighter control of motor start/stop sequences and status reporting. This reduces loop wiring, lowers installation time, and improves fault diagnosis during maintenance. Feature → Business Impact → Application: Four analog outputs and zero analog inputs provide flexible signal conditioning for protection or metering functions, supporting real-time monitoring of motor health and energy usage in packaging lines or manufacturing cells. Feature → Business Impact → Application: Modbus and DNP3 RTU over fiber optic ST ensure robust, interference-free communication with SCADA systems and remote I/O, ideal for distributed installations and harsh plant environments. Feature → Business Impact → Application: IRIG-B URTD interface adds precise time synchronization across drives and PLCs, improving event correlation for root-cause analysis in critical processes. Feature → Business Impact → Application: Conformal coating on PCB guards against moisture and dust ingress, increasing reliability in dusty or humid facilities such as metal fabrication or water treatment. Feature → Business Impact → Application: Voltage, current, and power protection/metersing capabilities enable proactive maintenance and energy management, helping meet uptime targets and reduce unplanned downtime in continuous processes. Feature → Business Impact → Application: Zone selective interlocking (1) improves coordination of multiple drives, reducing fault propagation and improving ride-through in high-demand applications like conveyor lines or extruders. Feature → Business Impact → Application: 9.259 lb, 8.06 in deep, 8.7 in high, 9.72 in wide footprint supports flexible cabinet placement and straightforward mechanical mounting in existing motor control centers. Feature → Business Impact → Application: One-year warranty (or 18 months from shipment) provides assurance of long-term reliability and predictable maintenance planning for OEMs and maintenance teams. Long-tail keywords integrated: motor protection relay, fiber optic communication, Modbus RTU, DNP3 RTU, conformal coated PCB, zone selective interlocking, motor metering, current protection, power protection, industrial IO, motor protection and metering.
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FAQs
The device offers 8 digital inputs, 5 digital outputs, 4 analog outputs, and no analog inputs, enabling robust control and status signaling for motor start/stop sequencing and protection telemetry.
Using fiber optic ST for Modbus/DNP3 RTU reduces electrical noise, improves distance reach, and enhances immunity to EMI, making it ideal for distributed drives and remote monitoring in harsh plant environments.
Yes, the unit supports zone selective interlocking with a 1-level setting, improving coordination among drives and reducing fault propagation in assemblies such as conveyors and packaging lines.
Plan for a footprint of roughly 8.06 in depth, 8.7 in height, and 9.72 in width with a weight of about 9.259 lb. Ensure power supply within 19-300Vdc or 40-250Vac and provide space for fiber optic connections and I/O wiring.
The device is covered under Eaton’s policy 25-000 with a one-year warranty from installation or eighteen months from shipment, whichever occurs first; verify current terms with Eaton for your region.