The CM-MPS.41S three-phase monitoring relay ensures comprehensive voltage and phase protection for three-phase systems operating between 300–500 V AC. This multifunctional device safeguards equipment from critical power anomalies including overvoltage, undervoltage, phase imbalance, and phase failure. With adjustable thresholds, selectable tripping delays, and phase sequence control, it delivers precise monitoring performance in demanding environments. Built for reliability and long life, it integrates seamlessly into industrial control panels. For enhanced automation and control integration, explore our industrial automation and control solutions designed for professional electrical protection systems.

Key Specifications – Three-Phase Monitoring Relay CM-MPS.41S

• Control / Measuring Voltage: 300–500 V AC, 50/60 Hz

• Outputs: 2 c/o (SPDT)

• Contact Rating: 250 V / 4 A

• Monitoring Functions:

  • Overvoltage and undervoltage

  • Phase unbalance and phase loss

  • Phase sequence detection

• Tripping Delay: Adjustable 0–30 s (instantaneous or delayed)

• Adjustments: Thresholds and delay settings via front potentiometers

• Accessories: Sealable transparent cover for tamper protection

• Connection: Screw terminal with double-chamber cage clamps

Highlights

• Monitors all key three-phase parameters with high precision

• Customizable thresholds for specific protection needs

• Adjustable tripping delay improves process flexibility

• Dual relay outputs enhance control circuit reliability

• Durable and easy to install with secure terminal connections

Typical Uses

• Industrial automation systems

• Motor and pump protection

• Power distribution and control panels

• HVAC and compressor units

• Machinery with sensitive voltage balance requirements

Installation & Support

Delivered fully tested for straightforward integration.

• Clearly marked terminals ensure safe wiring

• Optional transparent cover prevents unauthorized adjustments

• Technical documentation and support available upon request