GE MPRO-27 Protection Relay

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                                                                              • • • • • • GE MPRO-27 Protection Relay (MPACT-PLUS Electronic Trip Unit)

                                                                                          

                                                                                           

                                                                                          The GE MPRO-27 is an electronic protection relay / trip unit used in GE MPACT-PLUS low-voltage circuit breakers. It provides comprehensive protection, monitoring, and diagnostics for power distribution systems and motor feeder applications. It is designed to detect abnormal electrical conditions and trip the circuit breaker when necessary.

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                                                                                          Key Specifications

                                                                                          • Model: MPRO-27
                                                                                          • Brand: GE
                                                                                          • Product Type: Electronic Protection Relay / Trip Unit
                                                                                          • Series: MPACT-PLUS
                                                                                          • Installation: Integrated into compatible GE circuit breakers
                                                                                          • Power Supply:
                                                                                            • Internal current-powered operation
                                                                                            • Optional 24 VDC auxiliary supply for advanced functions and communications
                                                                                          • Communication:
                                                                                            • Optional Modbus communication capability
                                                                                          • Display:
                                                                                            • LCD display with protection settings and diagnostics

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                                                                                          Protection Functions

                                                                                          The MPRO-27 provides multiple protection functions, including:

                                                                                          • Long-Time Overcurrent Protection (Overload)
                                                                                          • Short-Time Overcurrent Protection
                                                                                          • Instantaneous Short-Circuit Protection
                                                                                          • Ground Fault Protection (optional)
                                                                                          • Thermal Memory Function
                                                                                          • Motor Starting / Inrush Protection (MCR)
                                                                                          • High-Set Instantaneous Overcurrent (HSIOC) protection

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                                                                                          Monitoring & Diagnostics

                                                                                          • Current measurement (L1, L2, L3, N)
                                                                                          • Trip cause indication
                                                                                          • Trip event recording
                                                                                          • Trip counter
                                                                                          • Event logger
                                                                                          • Breaker status monitoring
                                                                                          • Health diagnostics and watchdog functions

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                                                                                          Features & Advantages

                                                                                          • Comprehensive feeder and breaker protection
                                                                                          • Adjustable protection settings
                                                                                          • LCD-based local configuration
                                                                                          • Event and fault recording
                                                                                          • Optional communication integration
                                                                                          • Supports load shedding and alarm functions
                                                                                          • Suitable for industrial power distribution systems

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                                                                                          Applications

                                                                                          • Low-voltage switchgear
                                                                                          • Motor control centers (MCC)
                                                                                          • Industrial power distribution
                                                                                          • Manufacturing facilities
                                                                                          • Oil & gas installations
                                                                                          • Water treatment plants
                                                                                          • Power generation auxiliary systems

The structure and details of the product：