Eaton EMR-5000-2B1BB1 Motor Relay - RS-485 Modbus RTU
Part Number: EMR-5000-2B1BB1
Quick Summary
The Eaton EMR-5000-2B1BB1 motor relay is designed to monitor and protect motors in industrial drive systems. Engineers often struggle with reliable protection, remote diagnostics, and seamless integration into control networks. Compliance options for motor protection relays from Eaton commonly include CE marking, IP-rated enclosures, and SIL-ready configurations depending on configuration; exact certifications are confirmed in the datasheet. With 50/60 Hz operation, Modbus RTU or DNP3 RTU over RS-485, and scalable I/O, it delivers reliable protection while reducing panel complexity. This makes it a compelling choice for OEMs and maintenance teams seeking durable, compliant protection relays that integrate with PowerPort-E or similar monitoring tools.
Product Information
Extended Description
EMR-5000-2B1BB1 Eaton: Eaton, motor relay, EMR-4000, 19-300 Vdc, 40-250 Vac, Motor protection relay, Modbus RTU or DNP3 RTU over RS485, 5A, 1A, 8, 9, Removable, Motor, over RS-485,19-300Vdc, 40-250Vac, 50/60 Hz, Projection, Sensitive Ground Input
Product Name
Eaton motor relay
Catalog Number
EMR-5000-2B1BB1
UPC
786679159149
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 RS485
Phase current
5A, 1A
Analog outputs
2
Digital inputs
8
Digital outputs
9
I/O options
IRIG-B URTD Interface Sensitive Ground Input
Modbus / DNP3 RTU
over RS-485
Sensing inputs
Current Protection and Metering Differential Protection Voltage Protection and Metering Power Protection and Metering
Zone selective interlocking
1
Frequency rating
50/60 Hz
Mounting method
Projection
Terminals
Removable
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-5000-2B1BB1
Selling Policy 25-000 - Distribution and Control Products and Services
The EMR-5000-2B1BB1 provides 2 analog inputs and 2 analog outputs, plus 8 digital inputs and 9 digital outputs, with removable terminals and a projection mounting method. This combination reduces wiring complexity, speeds up installation, and enables precise motor protection schemes, including zone selective interlocking, metering, and differential protection. The device’s Modbus RTU or DNP3 RTU over RS-485 interface supports seamless integration with SCADA and control networks, improving remote diagnostics and fault reporting while lowering field cabling costs. Sensing inputs cover current protection and metering, voltage protection and metering, and power protection and metering, ensuring rapid fault isolation and enhanced safety in demanding environments. Compatibility with the EMR-4000 base relay supports scalable upgrades, and the removable terminals simplify maintenance and retrofit projects. In addition, the 50/60 Hz rating and robust mounting options help reduce installation time and enclosure adaptations, delivering measurable uptime improvements and a lower total cost of ownership. Industry professionals will appreciate the clear documentation, including Eaton’s specification sheet, supporting data-driven procurement and consistent performance across multiple lines of equipment.
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FAQs
To install, power down the panel and disconnect all wiring. Remove the legacy base relay if present, then mount the EMR-5000-2B1BB1 using the projector mounting method. Connect removable terminals for all analog and digital I/O, wire the RS-485 Modbus RTU or DNP3 RTU communication loop, and verify the address configuration. Finally, test protection functions, metering, and interlocking sequences in a controlled startup.
EMR-5000-2B1BB1 includes built-in RS-485 communication supporting Modbus RTU or DNP3 RTU, enabling remote supervision, data logging, and integration with SCADA systems. With 2 analog inputs, 2 analog outputs, 8 digital inputs, and 9 digital outputs, the relay can monitor, report, and react to motor conditions while reducing field wiring and simplifying network topology.
The relay offers current protection and metering, voltage protection and metering, and power protection and metering, along with differential protection and zone selective interlocking. These sensing inputs enable fast fault detection, accurate metering data, and coordinated protection across multiple feeders, improving reliability and safety in motor-driven applications such as conveyors, pumps, and fans.
Projection mounting and removable terminals simplify installation and maintenance. The device operates at 50/60 Hz and supports infrared IRIG-B URTD interface options and Sensitive Ground Input as I/O choices. Ensure enclosure suitability, confirm IP rating requirements, and verify that the EMR-4000 base relay is compatible for your upgrade path. Proper RS-485 wiring and addressing are essential for reliable communications.
Eaton’s warranty for this relay follows Selling Policy 25-000: one year from installation or 18 months from shipment, whichever occurs first. Access the Eaton specification sheet and selling policy for detailed terms. For technical support, leverage Eaton’s partner channels and the manufacturer’s documentation to ensure correct configuration, commissioning, and ongoing maintenance.