Eaton EMR-4000-2A1CB1 Motor Relay - Ethernet RJ-45
Part Number: EMR-4000-2A1CB1
Quick Summary
The Eaton EMR-4000-2A1CB1 motor relay is a compact control device that protects and controls motors in automation panels. Engineers often confront wiring complexity and integration hurdles when upgrading legacy systems, so a single unit that combines relaying, sensing, and metering can simplify installation and boot-time. While the manufacturer specifies compliance details separately, this module is designed to support critical standards and is built to operate across a wide voltage range with conformal coating for challenging environments; consult Eaton datasheets for exact CE, IP, or SIL considerations where applicable. Suitable for motor control panels, it uses Ethernet-based communication over RJ-45 and Modbus/DNP3 RTU, delivering faster commissioning, easier diagnostics, and improved uptime for industrial automation projects.
Product Information
Extended Description
EMR-4000-2A1CB1 Eaton: Eaton, motor relay, 5A, 1A, Motor, over Ethernet RJ-45, Conformal Coated Circuit Boards, 19-300Vdc, 40-250Vac, Current Protection and Metering,Power Protection and Metering,Sensitive Ground Input
Product Name
Eaton motor relay
Catalog Number
EMR-4000-2A1CB1
UPC
786679147078
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 Sensitive Ground Input IRIG-B
Modbus / DNP3 RTU
over Ethernet RJ-45
Sensing inputs
Power Protection and Metering Current Protection and Metering Voltage Protection and Metering
Zone selective interlocking
1
Programming an Eaton E-Series Relay, Step 3: Getting Started with the E-Series Wizard
Programming an Eaton E-Series Relay, Step 3: Getting Started with the E-Series Wizard
Programming an Eaton E-Series Relay, Step 3: Getting Started with the E-Series Wizard
Programming an Eaton E-Series Relay, Step 3: Getting Started with the E-Series Wizard
Programming an Eaton E-Series Relay, Step 3: Getting Started with the E-Series Wizard
Programming an Eaton E-Series Relay, Step 3: Getting Started with the E-Series Wizard
Eaton Specification Sheet - EMR-4000-2A1CB1
Feature: Ethernet-enabled communication and Modbus/DNP3 RTU over RJ-45. Business Impact: Enables remote monitoring, easier integration with PLCs and SCADA, and faster fault diagnosis. Application: Motor control cabinets and distributed automation nodes in manufacturing lines. Feature: Sensing inputs and metering capabilities including Power, Current, and Voltage protection. Business Impact: Reduces energy waste, enhances protection against abnormal conditions, and supports accurate metering for energy reporting. Application: Electrical distribution panels and motor drives requiring real-time protection. Feature: Wide voltage range with conformal coating. Business Impact: Allows operation from 19-300VDC and 40-250VAC in harsh industrial environments, lowering field-rework risk. Application: Outdoor or damp panels and high-humidity facilities. Feature: IO footprint with 8 digital inputs, 5 digital outputs, and 4 analog outputs. Business Impact: Rich I/O enables local control, simple interfacing with sensors, and compact panel designs. Application: Process lines, machine cells, and automation racks. Feature: Zone selective interlocking and 1:1 protection architecture. Business Impact: Improves selective tripping, reduces downtime, and enhances fault isolation. Application: Medium-voltage motor feeders and protective relays in electrical distribution. Feature: Conformal-coated circuit boards and robust construction. Business Impact: Prolonged service life in challenging environments and reduced maintenance costs. Application: Industrial facilities with dust, moisture, or chemical exposure, where reliability matters.
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FAQs
The EMR-4000-2A1CB1 is designed for motor control panels and automation racks, with Ethernet RJ-45 communication for Modbus/DNP3 RTU and a wide voltage range. It supports multiple digital inputs and outputs, digital and analog I/O, and IRIG-B ground interfaces, enabling straightforward panel integration and scalable automation.
Key specs include phase currents of 5A and 1A, a voltage range of 19-300Vdc / 40-250Vac, 8 digital inputs, 5 digital outputs, and 4 analog outputs. It also features power, current, and voltage protection with current protection and metering capabilities, plus an IRIG-B sensitive ground input option.
Yes. Its sensing inputs cover power protection and metering, current protection and metering, and voltage protection and metering, delivering integrated protection and energy monitoring for motor circuits within automation environments.
The product is covered by Eaton’s warranty policy 25-000, offering one year from the date of installation or eighteen months from shipment, whichever occurs first, ensuring replacement or repair for manufacturing defects within that window.
Refer to Eaton’s specification sheet (EMR-4000-2A1CB1) and the included multimedia assets, including application notes and a YouTube playlist on E-Series Relay setup for guided installation and configuration.