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Overview
The GE Motor Manager II MMII-PD-1-2-120 is a sophisticated digital motor protection device that offers complete motor management capabilities for industrial AC motor applications. This advanced relay provides reliable protection against various fault conditions while offering flexible control and monitoring features.

Key Features & Benefits:

• Comprehensive Motor Protection: Provides protection against overloads, phase loss, phase unbalance, locked rotor, jam protection, undercurrent, and ground faults

• Flexible Communication Options: Supports multiple communication protocols including Modbus RTU, DeviceNet, and Profibus DP for seamless integration into industrial networks

• Advanced Monitoring Capabilities: Offers real-time monitoring of motor current, voltage, power, energy, and thermal capacity used

• User-Friendly Interface: Features an intuitive display with push-button programming for easy setup and configuration

• Customizable Protection Settings: Allows precise adjustment of protection parameters to match specific motor characteristics and application requirements

Technical Specifications:

• Product Series: GE Motor Manager II (MMII)

• Voltage Rating: 120V AC (as indicated by -120 suffix)

• Current Range: Typically covers a wide range of motor currents (specific range depends on CT selection)

• Protection Functions: Overload, phase loss, unbalance, ground fault, etc.

• Communication Protocols: Modbus RTU, DeviceNet, Profibus DP

• Control Inputs: Multiple digital inputs for control signals

• Output Relays: Configurable output relays for alarm and control functions

Typical Applications:

• HVAC system motor protection

• Pump and fan motor protection

• Industrial machinery motor protection

• Motor control centers (MCC)

• Process industry motor applications

Compatibility:
The MMII-PD-1-2-120 is compatible with standard current transformers and can be used with various motor starters and contactors. It supports integration with most PLC and SCADA systems through its communication interfaces.

Note: For complete technical specifications and installation instructions, refer to the official GE Motor Manager II documentation. Proper configuration requires understanding of motor characteristics and protection requirements.