1487448

Overview

The Phoenix Contact 1487448 is a MACX-MR-3V-690-R-PT three-phase voltage monitoring relay designed for AC voltages between 160 and 690 V. It features an RS-485 interface and supports Modbus/RTU communication alongside NFC configuration. The device monitors overvoltage, undervoltage, window limits, phase sequence, missing phases, and adjustable asymmetry. It includes fault record storage and provides one PDT dry contact output via plug-in connection. Power supply ranges from 24 to 240 V AC/DC with adjustable thresholds and response delays.

Feature Summary

• Monitors three-phase AC voltage parameters including overvoltage, undervoltage, and window limits
• Detects phase sequence errors, missing phases, and adjustable asymmetry conditions
• Supports dual configuration methods using NFC technology and Modbus/RTU protocol
• Stores fault records for diagnostic analysis and maintenance tracking

Applications

• Three-phase power distribution system supervision
• Industrial machinery voltage protection circuits
• Electrical panel integration for grid monitoring
• Automated manufacturing equipment power quality assessment

Procurement Notes

Verify the specific ordering number 1487448 against the full type designation MACX-MR-3V-690-R-PT to ensure correct interface and function matching. Confirm that the required communication protocols align with existing RS-485 infrastructure. Check that the input voltage range of 160 to 690 V AC matches the target application network. Ensure the control circuit voltage compatibility with the 24 to 240 V AC/DC supply requirement is validated before procurement.

Selection Notes

Select this model when precise three-phase voltage monitoring with digital communication capabilities is required. The inclusion of NFC simplifies initial setup without physical wiring access. The adjustable asymmetry threshold allows customization for specific load balance requirements. The dry contact output facilitates direct integration into standard safety or control loops. Consider the need for fault logging if historical data analysis is part of the operational strategy.

Part Context

This component belongs to the MACX-MR series of monitoring relays by Phoenix Contact. It is part of a broader family of DIN rail mounted protection devices designed for industrial automation environments. The series typically offers modular expansion options and standardized interfaces for seamless integration into larger control systems managed through PLCs or SCADA networks.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing rack mounting systems and terminal block configurations when considering alternative models from different manufacturers.