CR4220-0.5

Current Sensors Overview

The CR4220-0.5 is a loop-powered AC current transducer from CR Magnetics Inc., designed for remote monitoring of sinusoidal alternating currents. It provides a calibrated 4 mA DC to 20 mA DC output signal proportional to the average RMS input current, with an input range of 0 to 0.5 A. The device features 0.5% full-scale accuracy and a response time of 250 ms for step changes. Operating within a frequency range of 50 to 400 Hz, it utilizes a solid core single-element design. The unit supports an output load up to 300 Ω and offers 2500 VDC insulation voltage, ensuring reliable performance in industrial control panels.

Current Sensors Feature Summary

• Produces a calibrated 4-20 mA DC output signal proportional to average RMS input AC current
• Features high precision with 0.5% full-scale accuracy for accurate measurement
• Utilizes a solid core single-element design for simple wiring and installation
• Offers loop-powered operation eliminating the need for separate power supplies

Current Sensors Applications

• Multi-point current detection and control panels
• Remote current monitoring systems
• Motor fault monitoring
• Heating element monitoring
• Lighting element monitoring

Current Sensors Procurement Notes

Verify that the specific part number CR4220-0.5 matches the required 0-0.5 A input range, as the CR4220 series includes various models with different current ratings. Confirm compatibility with the target PLC power supply voltage and ensure the application involves sinusoidal AC waveforms, as the device is calibrated for average RMS measurements of such signals. Check DIN rail mounting requirements against existing panel infrastructure.

Current Sensors Selection Notes

Select this model specifically when the monitored current does not exceed 0.5 A RMS. Consider the CR4220-5 or other variants if higher current ranges are necessary. Ensure the operating frequency falls within the 50-400 Hz specification. Evaluate the 250 ms response time against system speed requirements. Verify that the 300 Ω maximum output load is compatible with the receiving instrument's input impedance.

Current Sensors Part Context

This component belongs to the CR4220/CR4260 series of loop-powered AC current transducers. These devices are engineered for cost-effective integration into industrial environments, offering easy installation via 35 mm DIN rail or panel mounting. The series is characterized by its ability to interface with most commercial instruments and its compact black housing with printed wiring diagrams for simplified setup.

Current Sensors Replacement Considerations

Direct substitutes within the same series include CR4220-1, CR4220-5, and CR4220-10, which share identical form factors and electrical characteristics but differ in input current ranges. Ensure the replacement part matches the specific amperage requirement of the circuit being monitored.