Eaton EMR-5000-2B1FA0 Motor Relay - Modbus RTU over Fiber Optic ST
Part Number: EMR-5000-2B1FA0
Quick Summary
Eaton EMR-5000-2B1FA0 motor relay is a robust protection device for industrial motors and drive systems. This solution helps technicians reduce unplanned downtime by delivering precise protection and fast fault signaling. Certification details are provided by the manufacturer; typical motor protection relays in this class emphasize CE and IP considerations, but exact approvals should be confirmed with Eaton. For engineers and procurement teams, this relay combines flexible communications with comprehensive IO to streamline panel design and long-term maintenance, supporting reliable remote diagnostics and scalable deployment in automated facilities.
Product Information
Extended Description
EMR-5000-2B1FA0 Eaton: Eaton, motor relay, EMR-4000, 19-300 Vdc, 40-250 Vac, Motor protection relay, Modbus RTU or DNP3 RTU over Fiber Optic ST, 5A, 1A, 8, 9, Removable, Motor, over fiber optic ST, 19-300Vdc, 40-250Vac, 50/60 Hz Sensitive Ground Input,
Product Name
Eaton motor relay
Catalog Number
EMR-5000-2B1FA0
UPC
786679159446
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
Product Category
Motor protection relay
Base relay
EMR-4000
Analog inputs
2
Communication
Modbus RTU or DNP3 RTU over Fiber Optic ST
Phase current
5A, 1A
Analog outputs
2
Digital inputs
8
Digital outputs
9
I/O options
Sensitive Ground Input URTD Interface IRIG-B
Modbus / DNP3 RTU
over fiber optic ST
Sensing inputs
Voltage Protection and Metering Power Protection and Metering Differential Protection Current Protection and Metering
Zone selective interlocking
1
Frequency rating
50/60 Hz
Mounting method
Semi-flush
Terminals
Removable
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 - EMR-5000-2B1FA0
Feature → Business Impact → Application: Modbus RTU or DNP3 RTU over Fiber Optic ST enables robust, galvanically isolated communication between the relay and SCADA or PLC systems, reducing EMI susceptibility and enabling reliable remote monitoring across harsh environments. This drives improved asset visibility, faster fault localization, and decreased service window in mining, oil & gas, and heavy manufacturing. Application: Motor protection in automated lines with rugged fiber connectivity. Feature → Business Impact → Application: Two analog inputs and two analog outputs provide flexible signal conditioning and control options for voltage (monitoring and metering) and current sensing, enabling precise protection strategies and smarter energy management in process and packaging lines. Application: Integrated protection schemes for centrifugal and screw-driven motors. Feature → Business Impact → Application: Eight digital inputs and nine digital outputs support Zone Selective Interlocking and digital signaling for coordinated fault isolation, reducing downtime and preventing cascading trips in multi-motor drives. Application: Complex motor banks and substations. Feature → Business Impact → Application: Sensing inputs cover Voltage Protection, Power Protection, Differential Protection, and Current Protection, delivering comprehensive detection, faster reaction times, and improved equipment longevity in critical systems. Application: Electrical protection in critical power trains. Feature → Business Impact → Application: Removable terminals and semi-flush mounting simplify installation and field servicing, cutting commissioning time and enabling easy retrofits in existing control panels. Application: retrofit projects and maintenance-friendly installations. Feature → Business Impact → Application: Communication flexibility and compatibility with the EMR-4000 base relay provide a straightforward upgrade path, preserving wiring schematics and reducing total lifecycle cost in old installations. Application: modernization of legacy motor protection networks.
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FAQs
For installation, ensure the device is mounted semi-flush with removable terminals to simplify wiring and field servicing. Use fiber optic ST for communication to minimize EMI and support Modbus RTU or DNP3 RTU networking. Verify power supply ranges (19-300 Vdc and 40-250 Vac) and plan for proper grounding to maximize protection features and reliability in harsh environments.
EMR-5000-2B1FA0 provides voltage, current, and differential protection with multiple sensing inputs, plus zone selective interlocking. This combination shortens fault analysis time, limits damage, and reduces downtime. It also supports remote diagnostics via fiber communication, helping engineers monitor performance without on-site visits.
Yes. The EMR-5000-2B1FA0 builds on the EMR-4000 platform, sharing base relay concepts and common IO concepts while adding enhanced IO options, fiber communications, and expanded protection. Removable terminals and a semi-flush mounting approach help preserve wiring layouts, enabling a smooth upgrade path in retrofit projects.
Compliance details are provided by the manufacturer; confirm exact approvals with Eaton. In practice, motor protection relays in this class commonly reference standards suitable for industrial environments, so verify CE marking, IP ratings, and SIL/安全 requirements with Eaton to ensure full regulatory alignment for your application.
ROI arises from reduced unplanned downtime due to faster fault isolation, improved protection accuracy, and easier maintenance with removable terminals. The fiber-based communication supports remote diagnostics, minimizing on-site service trips. For critical lines, savings compound through longer motor life, fewer trips, and quicker changeovers in high-availability manufacturing environments.