CR4420S-20

Current Sensors Overview

The CR4420S-20 is a split core AC current transducer from CR Magnetics Inc. designed for industrial monitoring. It provides an average RMS DC output proportional to the AC input current, with a 0-20A input range and a 4-20mA output signal. The device operates on a 24VDC supply (±10%) and supports frequencies between 50Hz and 400Hz. It features a module package suitable for DIN rail or panel mounting, offering bidirectional sensing capabilities for single-element applications.

Current Sensors Feature Summary

• Provides calibrated DC output proportional to AC current input using average RMS sensing technology
• Features a split core design allowing installation without breaking the primary circuit
• Supports bidirectional current measurement for versatile industrial monitoring applications

Current Sensors Applications

• Industrial process control systems requiring AC current monitoring
• Power distribution panels for load management
• Energy metering and power quality analysis equipment
• Automated manufacturing machinery supervision

Current Sensors Procurement Notes

Verify that the specific part number matches the required input range of 0-20A AC and the 4-20mA output configuration. Confirm the supply voltage requirement of 24VDC ±10% aligns with your system's power infrastructure. Ensure the split core aperture size accommodates the target cable diameter. Check for any specific environmental rating requirements if deployed in harsh industrial conditions.

Current Sensors Selection Notes

Select this model when average RMS accuracy is sufficient for fixed frequency waveforms between 50Hz and 400Hz. Choose the split core variant for ease of retrofitting into existing busbars or cables. Consider the 4-20mA output compatibility with standard PLC or DCS inputs. Evaluate the DIN rail mounting option against panel mount alternatives based on enclosure constraints.

Current Sensors Part Context

This component belongs to the CR4420S Series of Average RMS AC Current Transducers. The series is engineered to deliver reliable performance in demanding industrial environments. The split core architecture distinguishes it from solid core variants, facilitating non-intrusive installation. It serves as a critical interface between high-current AC lines and low-voltage control systems.

Current Sensors Replacement Considerations

Direct substitutes within the same series include models with different current ratings such as CR4420S-75 for higher capacity needs. Verify that replacement units maintain the same 4-20mA output type and 24VDC supply requirement. Cross-reference the physical dimensions and mounting style to ensure mechanical compatibility with existing installations.