Why Choose the ABB CM-MPN.62S Three-Phase Monitoring Relay?
The ABB CM-MPN.62S, order code 1SVR750488R8300, is a multifunctional three-phase monitoring relay designed to supervise high-voltage three-phase electrical supplies in industrial installations. It monitors phase failure, phase sequence, overvoltage, undervoltage and phase unbalance, helping protect motors, machinery and automation equipment against abnormal supply conditions.
The CM-MPN.62S operates directly from the monitored circuit with a 3 × 450–720 V AC line-to-line rated control supply and measuring range at 50/60 Hz. Adjustable voltage and phase-unbalance thresholds allow the relay response to be tailored to the installation, while selectable phase sequence monitoring and automatic phase sequence correction provide additional flexibility.
With two configurable changeover (SPDT) output contacts rated at 250 V / 4 A, a 200 ms start-up delay and selectable instantaneous or 0.1–30 s tripping delay, the CM-MPN.62S provides flexible signalling and control. Screw terminals with double-chamber cage connections and a 45 mm DIN-rail housing provide secure integration into industrial control panels.
Key Advantages
- Multifunctional three-phase voltage and phase monitoring.
- Wide 3 × 450–720 V AC line-to-line measuring and supply range.
- Detects phase failure and phase unbalance.
- Provides adjustable overvoltage and undervoltage monitoring.
- Selectable phase sequence monitoring helps detect incorrect phase rotation.
- Supports automatic phase sequence correction.
- Adjustable monitoring thresholds support application-specific protection.
- Selectable instantaneous or 0.1–30 s tripping delay.
- Dual changeover outputs can provide common or separate signalling.
- Robust screw terminals provide secure industrial wiring connections.
Key Features
- ABB CM-MPN multifunctional three-phase monitoring relay.
- 450–720 V AC line-to-line measuring range.
- Powered directly from the measuring circuit.
- 50/60 Hz rated frequency.
- Phase failure detection.
- Selectable phase sequence monitoring.
- Automatic phase sequence correction.
- Overvoltage and undervoltage monitoring.
- Phase unbalance detection.
- Adjustable monitoring thresholds.
- 200 ms start-up delay.
- Selectable ON- or OFF-delay operation.
- Tripping delay of 0 or 0.1–30 s.
- 2 × 1 c/o or 1 × 2 c/o (SPDT) contacts, configurable.
- Output contacts rated at 250 V / 4 A.
- Screw terminals with double-chamber cage connections.
- DIN-rail mounting.
Reliable Monitoring of High-Voltage Three-Phase Systems
Three-phase monitoring relays continuously supervise the incoming electrical supply and provide a switching response when monitored parameters move outside configured limits. The ABB CM-MPN.62S monitors phase presence, phase sequence, voltage levels and phase balance, helping protect industrial equipment from potentially damaging three-phase supply faults.
Its 450–720 V AC line-to-line range makes the CM-MPN.62S particularly suitable for higher-voltage industrial three-phase networks. Configurable output operation allows the contacts to provide either a common signal or separate overvoltage and undervoltage signals, while adjustable thresholds and timing functions allow the monitoring response to be matched to the application.
Typical Applications
- High-voltage three-phase motor protection.
- Industrial mains and power supply supervision.
- Phase failure and phase sequence detection.
- Overvoltage and undervoltage monitoring.
- Phase unbalance supervision.
- Pumps, compressors, fans and conveyors.
- Industrial machinery and process equipment.
- Electrical control panels and switchboards.
