Why Choose the ABB CM-MPN.52P Three-Phase Monitoring Relay?
The ABB CM-MPN.52P is a multifunctional three-phase monitoring relay designed to monitor critical electrical parameters in industrial power systems, machinery and automation installations. As part of the ABB CM-MPN three-phase monitoring relay series, it provides monitoring of phase sequence, phase failure, overvoltage, undervoltage and phase unbalance.
The relay uses a true RMS measuring principle and provides adjustable threshold values for overvoltage, undervoltage and phase unbalance. Phase sequence monitoring can be enabled or disabled, while automatic phase sequence correction can also be configured. The relay is powered directly from the measuring circuit, eliminating the need for a separate auxiliary supply.
With a 3 × 350–580 V AC measuring and control supply, configurable 2 c/o output contacts and adjustable tripping delays from instantaneous operation to 30 s, the CM-MPN.52P is suitable for protecting three-phase electrical equipment against abnormal supply conditions. Its Easy Connect push-in terminals and DIN rail mounting simplify installation in electrical control panels.
Key Advantages
- Multifunctional three-phase monitoring relay for industrial applications.
- 3 × 350–580 V AC measuring range for monitoring three-phase electrical systems.
- Monitors phase failure, phase sequence, overvoltage, undervoltage and phase unbalance.
- Configurable automatic phase sequence correction.
- Adjustable tripping delay from 0 to 30 s.
- Configurable 2 c/o (SPDT) output contacts for flexible control and signalling.
- Tool-free Easy Connect push-in terminals simplify electrical installation.
Key Features
- ABB CM-MPN multifunctional three-phase monitoring relay series.
- 3 × 350–580 V AC rated control supply and measuring voltage.
- True RMS measuring principle.
- Phase failure detection.
- Phase sequence monitoring.
- Configurable automatic phase sequence correction.
- Adjustable overvoltage and undervoltage monitoring.
- Adjustable phase unbalance monitoring.
- 2 × 1 c/o or 1 × 2 c/o contacts, configurable.
- Adjustable 0 s or 0.1–30 s tripping delay.
- ON-delayed or OFF-delayed tripping selectable.
- Three LED indicators for operational status.
- Push-in Easy Connect terminals.
- DIN rail mounting.
Reliable Three-Phase Monitoring for Industrial Automation
Three-phase monitoring relays such as the ABB CM-MPN.52P help protect electrical equipment by continuously checking the condition of the incoming three-phase supply. Monitoring phase failure, phase sequence, voltage and phase balance allows abnormal supply conditions to be detected before they can adversely affect connected equipment.
The CM-MPN.52P uses adjustable monitoring thresholds and configurable time delays to provide flexible protection for industrial systems. Its automatic phase sequence correction function can simplify installation where phase rotation may vary, while the configurable relay outputs allow the device to provide either combined or separate signalling depending on the application.
Typical Applications
- Three-phase motor protection and monitoring.
- Industrial machinery and production equipment.
- Control panels and electrical distribution systems.
- Pumps, fans and compressor systems.
- Conveyors and material handling equipment.
- Industrial automation and control systems.
- Three-phase power supply monitoring and fault signalling.
