Eaton EMR-3MP0-2A9CB1 Motor Relay - Modbus TCP
Part Number: EMR-3MP0-2A9CB1
Quick Summary
Eaton motor relay EMR-3MP0-2A9CB1 provides motor protection and control for industrial drive applications. Engineers often struggle with integrating reliable communications, remote diagnostics, and robust protection in harsh plant environments. Certification considerations include CE marking for global compliance, SIL readiness for safety-critical uses, and IP-related ruggedization expectations—verify specifics with the manufacturer. The device supports Modbus TCP or DNP3 TCP/UDP over Ethernet, IRIG-B URTD interface, and a projection mount for quick panel installation. This combination helps reduce downtime, streamline maintenance, and accelerate commissioning for OEMs and end users, while enabling better visibility of motor load, protection events, and energy consumption across multiple motors.
Product Information
Extended Description
EMR-3MP0-2A9CB1 Eaton: Eaton, motor relay, EMR-3MP0-2, current only motor relay, 4I, 4O, 1AO ,IRIG-B, 5A PH and GND, Modbus TCP or DNP3 TCP/UDP over Ethernet RJ45, Projection mount, 19-300Vdc, 40-250V, Conf. coat
Product Name
Eaton motor relay
Catalog Number
EMR-3MP0-2A9CB1
UPC
786689222604
Product Length/Depth
8.06 in
Product Height
8.62 in
Product Width
6.82 in
Product Weight
5.82 lb
Compliances
Contact Manufacturer
Application
Motor
Type
Motor relay
Analog inputs
0
Phase current
5A
Analog outputs
1
Digital inputs
4
Digital outputs
4
I/O options
IRIG-B URTD Interface
Modbus / DNP3 TCP
over Ethernet RJ-45
Sensing inputs
Current Protection and Metering
Zone selective interlocking
0
Frequency rating
50/60 Hz
Mounting method
Projection
PowerPort-E 4.71
PowerPort-E 4.71
EMR-3MP0 Modbus® register maps
EMR-3MP0 Modbus® register maps
EMR-3MP0 technical data
EMR-3MP0 motor protection relay instruction book
Introduction to Eaton's E-Series Relay, Step 1: Physical Connections
Introduction to Eaton's E-Series Relay, Step 1: Physical Connections
Introduction to Eaton's E-Series Relay, Step 1: Physical Connections
Introduction to Eaton's E-Series Relay, Step 1: Physical Connections
Introduction to Eaton's E-Series Relay, Step 1: Physical Connections
Introduction to Eaton's E-Series Relay, Step 1: Physical Connections
Eaton Specification Sheet - EMR-3MP0-2A9CB1
Feature → Business Impact → Application: 4 digital inputs and 4 digital outputs with 1 analog output and 0 analog inputs reduce external wiring and fragmentation, delivering cleaner control panels and faster wiring harness assembly for conveyor systems and packaging lines. The business impact is lower installation costs and improved diagnostic clarity, enabling quicker root-cause analysis for motor faults in manufacturing lines. Application: motor protection schemes for automated systems that demand compact, multi-function relays with integrated monitoring. Feature → Business Impact → Application: Modbus TCP and DNP3 TCP/UDP over Ethernet RJ-45 provide seamless integration with SCADA and MES platforms, improving data visibility and remote management. The application includes process lines and material handling where centralized monitoring reduces downtime and enhances predictive maintenance. Feature → Business Impact → Application: IRIG-B URTD interface and projection mounting simplify time synchronization and panel integration, reducing commissioning time and enabling precise motor protection in rugged environments. The application covers mining, cement, and heavy industry where reliable timing and robust mounting are essential. Feature → Business Impact → Application: Wide voltage operation (up to 19-300 VDC with support for related AC options) ensures compatibility with varied plant electrical architectures, minimizing inventory and accelerating deployment. The application spans OEM equipment builds and retrofit projects where power supply flexibility is critical. Feature → Business Impact → Application: Current protection and metering sensing inputs deliver accuracy for energy management and overload detection, supporting improved safety margins and compliance reporting in hazardous or high-load motor applications.
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FAQs
EMR-3MP0-2A9CB1 uses a projection mounting method and compact footprint (8.06 in L, 8.62 in H, 6.82 in W) to simplify panel assembly. With 19-300 VDC (wide DC range) and 4 digital inputs plus 4 digital outputs, it minimizes wiring and reduces panel complexity while delivering reliable motor control in automation packages.
The relay includes built-in Modbus TCP and DNP3 TCP/UDP over Ethernet RJ-45 connectivity, enabling seamless integration with common SCADA and MES systems. This supports remote monitoring, centralized protection events, and faster fault isolation across industrial drives and conveyors.
Compliance information is provided by the manufacturer. Seek confirmation for CE marking, SIL readiness, and any IP-related protections. Eaton typically supports standard industrial certifications; verify current documentation and installation notes to ensure regulatory alignment for your site.
Current protection and metering sensing inputs enable precise monitoring of motor load and fault conditions, reducing false trips and enabling targeted maintenance. With a 5A phase current rating, the unit is well-suited for moderate-load motors in packaging, material handling, and process lines, improving uptime and safety margins.
Plan for a panel-ready installation using the projection mounting, which eases wiring and alignment. Refer to the EMR-3MP0 manuals and application notes for wiring schematics, Modbus/DNP3 configuration, and diagnostic procedures. Keep spare 4/4 I/O modules and maintain a log of protection events to maximize ROI and minimize downtime.