Description
The Eaton EMR-3MP0-2A9BB is a sophisticated Motor Protective Relay from the EMR-3000 series, specifically designed to safeguard medium and low-voltage motors from electrical faults. This multifunctional device provides comprehensive protection, including thermal overload, phase reversal, unbalance, and ground fault detection. By integrating advanced digital signal processing with a compact, user-friendly interface, it ensures rapid trip times and precise motor monitoring in demanding industrial environments. The unit’s dual-voltage power supply capability (230Vac/270Vdc) and high-accuracy current sensing (5A) make it a versatile solution for ensuring operational uptime and preventing costly motor damage in refineries, water treatment plants, and manufacturing facilities.

Technical Specifications
- Device Series: EMR-3000 Motor Relay
- Model Number: EMR-3MP0-2A9BB
- Current Input: 5A Nominal
- Control Power Supply: 230 Vac / 270 Vdc
- Protection Functions: Thermal Overload (49), Jam/Stall (51), Phase Unbalance (46), Ground Fault (50N/51N)
- Communication Protocols: Modbus RTU, DNP3, IEC 60870-5-103
- Display Interface: Front-mounted LCD for metering and fault data
- Mounting Style: Semi-flush or projection mount
- Operating Frequency: 50/60 Hz
- Environmental Protection: IP54 (front panel)
Related Eaton EMR Series Models
Below are 10 related models within the Eaton EMR-3000 protective relay product family:
- EMR-3MP0-2A9AA (Motor Relay with standard power supply)
- EMR-3MP0-2A9BA (Motor Relay with enhanced communication)
- EMR-3000-2A0AA (Feeder Protection Relay)
- EMR-3000-2A0AB (Feeder Protection with Modbus/DNP3)
- EMR-3TR0-2A9BB (Transformer Protection Relay)
- EMR-3GP0-2A0BB (Generator Protection Relay)
- EMR-3MP0-1A9BB (Motor Relay with 1A current input)
- EMR-4000-2A0BB (Advanced Multi-function Protection Relay)
- EMR-5000-2A0BB (High-end Protection and Control Relay)
- Eaton E-Series Communication Module (External networking upgrade)

