CR4220-20

Current Sensors Overview

The CR4220-20 is a loop-powered AC current transducer designed for monitoring average RMS AC currents. It features a single channel with a 20A input range and provides a calibrated 4mA to 20mA DC output signal proportional to the measured current. The device operates within a frequency range of 50Hz to 400Hz and supports bidirectional measurement. It requires a 24V supply voltage, drawing a maximum of 45mA. The unit offers ±0.5% accuracy and functions reliably between 0°C and 60°C.

Current Sensors Feature Summary

• Produces a calibrated 4mA to 20mA DC output signal proportional to the average RMS input AC current
• Supports bidirectional current measurement for versatile monitoring applications
• Features a solid core design suitable for easy installation on DIN rails or panels

Current Sensors Applications

• Remote current detection in industrial systems
• Monitoring motor faults and operational status
• Multi-point current detection and control panels
• Monitoring heating elements and lighting circuits

Current Sensors Procurement Notes

Verify that the specific part number matches the required input range and output configuration. Confirm compatibility with the existing PLC power supply voltage and wiring requirements. Ensure the operating temperature range aligns with the intended environmental conditions. Check for any specific mounting hardware requirements associated with DIN rail installation.

Current Sensors Selection Notes

Select this model when a loop-powered solution is preferred to simplify wiring by sharing power with the signal output. Consider the 20A input range to ensure it covers the maximum expected load current. Verify that the 50Hz to 400Hz frequency range matches the system's electrical characteristics. Evaluate the need for bidirectional capability if reverse current flow must be monitored.

Current Sensors Part Context

This component belongs to the CR4220 series of loop-powered AC current transducers from CR Magnetics Inc. The series utilizes a transformer-based sensing mechanism with integrated conditioning electronics. These devices are engineered to interface directly with standard industrial instruments and PLCs, providing a reliable means of remote current monitoring without requiring separate signal power sources.

Current Sensors Replacement Considerations

Public confirmed substitute part numbers: CR4220-0.5, CR4220-25.