CR4120-40

Current Sensors Overview

The CR4120-40 is a True RMS AC Current Transducer manufactured by CR Magnetics, Inc. It features a single-element solid core design with an input range of 0–40 AAC. The device operates on a 24 VDC supply with +/- 10% tolerance and provides a ratiometric 4–20 mADC output. It supports frequencies from 20 Hz to 5 kHz and requires a minimum output load of 500 ohms.

Current Sensors Feature Summary

• True RMS measurement capability for non-sinusoidal AC waveforms
• Single-element solid core construction for isolation
• Ratiometric 4-20 mA analog output signal

Current Sensors Applications

• Power factor correction systems
• Overcurrent protection circuits
• DC and AC power monitoring
• Closed-loop DC and AC current sensor modules
• Leakage current detection

Current Sensors Procurement Notes

Verify the specific suffix matches the required input range and output specifications. Confirm RoHS compliance status if environmental regulations apply. Ensure the supply voltage aligns with the 24 VDC requirement. Check that the application frequency falls within the 20 Hz to 5 kHz operational window. Validate the output load impedance meets the minimum 500 ohm threshold for accurate signal transmission.

Current Sensors Selection Notes

Select this component when precise measurement of distorted AC currents is necessary. The solid core design eliminates the need for split cores or mechanical connections. The ratiometric output simplifies integration with standard industrial control systems. Consider the 40 A maximum input capacity against peak load requirements. Verify compatibility with existing 24 VDC power infrastructure.

Current Sensors Part Context

This model belongs to the CR4120 series of True RMS AC Current Transducers. The series is engineered for applications requiring high accuracy in complex waveform environments. Other variants in the family offer different input ranges and output configurations while maintaining similar core technologies.

Current Sensors Replacement Considerations

Direct substitutes are not explicitly documented in public sources. Cross-reference with other CR Magnetics models in the CR4120 series for compatible electrical characteristics. Ensure any alternative maintains the same frequency response and output type.