Eaton MP4010 – Motor Protection Relay

The Eaton MP4010 is a member of the MP-4000 series of motor management relays, designed to provide comprehensive protection and monitoring for three-phase AC induction motors in industrial applications. It combines accurate measurement, flexible protection functions, and communication capabilities in a compact housing, making it ideal for motor control centers (MCCs) and standalone starters.

Protection Functions

The MP4010 continuously monitors motor currents and voltages to detect conditions that could lead to motor failure. Its protection suite includes:

• Thermal overload (I²t) with multiple trip classes

• Phase loss / phase unbalance

• Phase reversal

• Locked rotor / stall protection

• Ground fault (zero-sequence or core balance)

• Undercurrent / load loss

• Overvoltage and undervoltage

• Jam protection and frequent start limitation

Key Features

• Local Display: Backlit LCD showing real-time current, voltage, power, and trip cause. Intuitive menu for configuration.

• Communication: Integrated Modbus RTU over RS485 for integration with PLC, SCADA, or energy management systems.

• Flexible I/O: Multiple programmable relay outputs for trip, alarm, and control; digital inputs for remote reset or interlocking.

• High Accuracy: True RMS measurement ensures reliable protection even with distorted waveforms from VFDs.

• Compact Design: DIN-rail or panel mount, fitting easily into retrofit projects.

Technical Specifications

• Rated Insulation Voltage: 690 V AC

• Current Inputs: 1 A or 5 A CT secondaries (programmable), or direct connection up to 10 A

• Auxiliary Supply: 100-240 V AC/DC or 24 V DC (model dependent)

• Output Relays: 3 changeover (CO) contacts, rated 250 V AC / 5 A

• Digital Inputs: 2 inputs, 24 V DC, programmable

• Communication Protocol: Modbus RTU, 2-wire RS485, baud rate up to 38.4 kbps

• Operating Temperature: -10°C to +55°C

• Dimensions (WxHxD): 45 x 110 x 120 mm (approx.)

Applications

The MP4010 is suitable for a wide range of industries:

• Pump stations, fans, compressors, and conveyors

• HVAC systems in commercial buildings

• Water and wastewater treatment plants

• Mining and material handling

• Petrochemical and process industries

Easy Integration and Setup

With its compact size and DIN-rail mounting option, the relay can be installed in control panels with minimal space. The intuitive menu structure guides the user through parameter setting, and the unit stores historical trip data for diagnostics. By using the MP4010, maintenance teams gain valuable insight into motor health and operational efficiency.

Eaton's MP-4000 series has been proven in thousands of installations worldwide, offering a cost-effective solution for motor management. The MP4010 ensures you receive the exact features required for your application, backed by Eaton's global support network.