Eaton motor relay EMR-4000-2A0IB0 - RS-485/Ethernet control
Part Number: EMR-4000-2A0IB0
Quick Summary
Eaton motor relay EMR-4000-2A0IB0 provides intelligent motor control for demanding industrial drives and protection applications. In practice, designers face challenges wiring disparate relays and ensuring reliable communications in harsh panels. This unit features RS-485 Modbus and Ethernet TCP/IP, IRIG-B IO, conformal coating, and a broad voltage range of 19–300 Vdc or 40–250 Vac, enhancing ruggedness. By consolidating protection, metering, and control in a single package, it lowers installed cost and accelerates commissioning in industrial automation environments. This translates into improved energy management and more predictable equipment behavior for plant managers and maintenance teams.
Product Information
Extended Description
EMR-4000-2A0IB0 Eaton: Eaton, motor relay, 5A, 1A, Motor, over RS-485, over Ethernet RJ-45, Conformal Coated Circuit Boards, 19-300Vdc, 40-250Vac, Voltage Protection and Metering,Power Protection and Metering,Current Protection and Metering,
Product Name
Eaton motor relay
Catalog Number
EMR-4000-2A0IB0
UPC
786679147719
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
URTD Interface IRIG-B
Modbus / DNP3 RTU
over RS-485
Modbus / DNP3 TCP
over Ethernet RJ-45
Sensing inputs
Power Protection and Metering Voltage Protection and Metering Current Protection and Metering
Zone selective interlocking
1
Programming an Eaton E-Series Relay, Step 4: Advanced Configuration with PowerPort-E
Programming an Eaton E-Series Relay, Step 4: Advanced Configuration with PowerPort-E
Programming an Eaton E-Series Relay, Step 4: Advanced Configuration with PowerPort-E
Programming an Eaton E-Series Relay, Step 4: Advanced Configuration with PowerPort-E
Programming an Eaton E-Series Relay, Step 4: Advanced Configuration with PowerPort-E
Programming an Eaton E-Series Relay, Step 4: Advanced Configuration with PowerPort-E
Eaton Specification Sheet - EMR-4000-2A0IB0
Integrated I/O and flexible control streamline panel wiring and reduce footprint, leading to faster installation and lower capital expenditure. Remote communication options, including RS-485 Modbus and Ethernet TCP/IP, enable centralized monitoring and easier integration with PLCs and SCADA, cutting downtime and enabling data-driven decisions for maintenance. The built-in protection and metering suite delivers real-time voltage, current, and power data, improving fault detection and energy optimization. Conformal coating enhances reliability in harsh environments, while IRIG-B timing and URTD interface enable precise time stamping and synchronization in mission-critical applications. Zone selective interlocking, with 1 channel, minimizes fault spread and improves system availability. The device’s compatibility with PowerPort-E simplifies advanced configuration and reduces commissioning time in control rooms and motor control centers.
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FAQs
Installation should account for panel space and mounting orientation. The unit measures 8.06 in long, 8.7 in high, and 9.72 in wide, with a weight of 9.259 lb, so ensure enclosure clearance and adequate airflow. Use proper mounting hardware, plan access to 8 digital inputs and 5 digital outputs, and consider future serviceability and cabling routes. If timing synchronization is required, IRIG-B compatibility should be integrated into the design.
It supports Modbus/ DNP3 RTU over RS-485 and Modbus/ DNP3 TCP over Ethernet RJ-45, plus an URTD interface and IRIG‑B timing. For reliable operation, configure correct baud rate, parity, and addressing in the PLC/SCADA system, and use PowerPort-E or equivalent tooling to simplify configuration and ensure consistent remote monitoring and control.
The device includes voltage protection and metering, current protection and metering, and power protection and metering. These features enable early fault detection and energy data for optimization. Verify compatibility with your motor supply range of 19–300 Vdc and 40–250 Vac, and plan zone selective interlocking to minimize fault impact on the broader drive system.
Warranty is one year from installation or eighteen months from shipment, whichever occurs first. Compliance details are provided by the manufacturer, so confirm site-specific standards before deployment. To maximize uptime, align maintenance scheduling with the warranty window and maintain essential spare parts for digital I/O and metering components, ensuring firmware compatibility with your automation network.
This motor relay is well-suited for manufacturing, process control, water treatment, and other energy-intensive industries where reliable motor protection, remote monitoring, and energy metering are essential. Its eight digital inputs, five digital outputs, Modbus/Ethernet connectivity, zone selective interlocking, and IRIG-B timing support centralized supervision and integration with existing automation architectures, reducing wiring complexity and improving plant-wide visibility.