ABB CM-MPN.52P 1SVR760487R8300 Three-phase monitoring relay

Overview

The ABB CM-MPN.52P 1SVR760487R8300 is a multifunctional three-phase monitoring relay within the ABB CM relay family. It is designed for 3×350–580 VAC 50/60 Hz three-phase mains supervision. The CM-MPN.52P adopts push-in spring terminals for fast wiring, different from the screw-terminal version CM-MPN.52S (1SVR750487R8300). It continuously monitors phase failure, phase sequence, overvoltage, undervoltage and phase unbalance, with adjustable thresholds and configurable trip delay. It is widely used in MCC, DCS, pump and compressor control panels for motor and power supply protection interlock.

Features

The ABB CM-MPN.52P 1SVR760487R8300 supports TRMS true RMS measurement for stable detection under distorted waveforms.CM-MPN.52P provides two configurable SPDT (2 c/o) relay outputs, which can be set as a common alarm signal or separate signals for overvoltage and undervoltage. Trip delay ranges from 0 s to 30 s, with ON-delay / OFF-delay selection and fixed 200 ms startup delay. Automatic phase sequence correction function is optional. Push-in tool-free connection terminals reduce wiring time and maintenance workload. DIN rail mounting, compact housing for standard control cabinet installation.

Specs

Device Type: Three-phase monitoring relay Model: ABB CM-MPN.52P Order Code: 1SVR760487R8300 Brand: ABB Series: CM-MPN Rated Measuring Voltage: 3×350–580 VAC, 50/60 Hz Output: 2 c/o SPDT, 250 V / 4 A Delay Time: 0 s or 0.1–30 s trip delay, 200 ms startup delay Connection: Push-in spring terminals Mounting: DIN rail Ambient Temperature: -25 °C ~ +60 °C Standard: IEC 60947-5-1

Principle

The ABB CM-MPN.52P 1SVR760487R8300 samples three-phase line voltage signals via internal circuit. The built-in processor judges phase loss, sequence error, voltage deviation and unbalance. If the measured value exceeds the preset threshold after the set delay, the relay contacts switch state to send alarm or interlock signal to PLC and contactor loop.

Applications

The ABB CM-MPN.52P 1SVR760487R8300 is applied for three-phase power monitoring of fans, pumps, compressors and production line auxiliary drives in industrial automation, water treatment, energy and chemical skids. The ABB CM-MPN.52P 1SVR760487R8300 is stocked as spare relay for existing control cabinet retrofitting and replacement.