Eaton EMR-4000-2A0CA0 Motor Relay - Zone Selective Interlock
Part Number: EMR-4000-2A0CA0
Quick Summary
The Eaton motor relay EMR-4000-2A0CA0 provides integrated motor protection and control for industrial drives. Engineers often struggle with wiring complexity and fragmented protection schemes in motor circuits, which can lead to startup delays and increased downtime. Specific certifications are not listed in the data; verify CE, IP ratings, and SIL with Eaton to satisfy your risk assessments. With Modbus TCP or DNP3 over Ethernet, the unit enables scalable remote monitoring and diagnostics, while Zone Selective Interlocking speeds fault isolation and reduces arc-flash exposure in large motor assemblies. This combination supports compliance-driven projects and helps teams streamline commissioning, spare-part planning, and ongoing maintenance, delivering measurable business value.
Product Information
Extended Description
EMR-4000-2A0CA0 Eaton: Eaton, EMR-4000-2, current and voltage motor relay, 8I, 5O, 4AO, ZSI, IRIG-B, 5/1A PH and GND, Modbus TCP or DNP3 TCP/UDP over Ethernet RJ45, No conf. coat, Semi-flush mount
Product Name
Eaton motor relay
Catalog Number
EMR-4000-2A0CA0
UPC
786679147429
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 Ethernet RJ-45
Sensing inputs
Current Protection and Metering Power Protection and Metering Voltage 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-4000-2A0CA0
Feature: Integrated protection and control for motors → Business Impact: Reduces wiring complexity and provides centralized protection, speeding startup and increasing system reliability. Application: Industrial drives where compact, single-box protection is required and remote diagnostics are beneficial. Long-tail keywords: motor protection relay, integrated motor protection, Zone Selective Interlocking benefits. Feature: Modbus TCP or DNP3 over Ethernet connectivity → Business Impact: Enables scalable remote monitoring and faster fault localization, cutting downtime. Application: Plants leveraging Ethernet-based automation and OT/IT convergence. Long-tail keywords: Modbus TCP motor relay, DNP3 over Ethernet, industrial Ethernet protocols. Feature: IRIG-B interface and I/O options → Business Impact: Provides precise time synchronization and flexible data acquisition for protection schemes. Application: Large electrical networks needing accurate metering and signaling. Long-tail keywords: IRIG-B time sync, UT/RTD interfaces, motor protection metering. Feature: Zone Selective Interlocking (ZSI) → Business Impact: Speeds fault isolation, reduces system-wide disruption, and improves safety. Application: Medium to large motor installations with distributed protection zones. Long-tail keywords: Zone Selective Interlocking relay, fast fault clearance, motor fault isolation. Feature: Sensing inputs and metering capabilities → Business Impact: Improves visibility into current, power, and voltage for proactive maintenance. Application: Power protection and metering in industrial facilities. Long-tail keywords: current protection metering, voltage protection metering, power protection relay.
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FAQs
To install, verify network readiness for Modbus TCP or DNP3 over Ethernet and ensure compatible Ethernet cabling. The unit supports 8 digital inputs, 5 digital outputs, and 4 analog outputs, with IRIG-B time interface available for synchronized signaling. SEMI-flush mounting and other mounting options help integrate into existing control cabinets while maintaining serviceability.
Key features include Modbus TCP and DNP3 RTU over Ethernet, IRIG-B interface, Zone Selective Interlocking, and current protection with metering. Configure via the Ethernet port for remote monitoring and set protection thresholds using Eaton guidance. The device supports 8 digital inputs, 5 digital outputs, and 4 analog outputs to match your I/O topology.
Large motor installations and distribution systems where selective tripping minimizes downtime benefit most. ZSI enables fast fault isolation, reducing arc-flash exposure and improving safety, while Modbus TCP or DNP3 enables seamless integration with existing SCADA or MES systems.
The provided data lists Compliances as 'Contact Manufacturer,' so confirm applicable CE, IP ratings, SIL, and site-specific standards with Eaton before procurement. This helps ensure your installation meets regulatory requirements and internal safety policies.
Expected ROI derives from reduced wiring complexity, faster commissioning, lower downtime due to rapid fault isolation, and improved visibility via metering. Maintenance benefits include remote diagnostics over Modbus TCP/DNP3 and IRIG-B time synchronization, which streamline preventive maintenance and spare-parts planning, enhancing overall equipment effectiveness.