CR4120-15

Current Sensors Overview

The CR4120-15 is a True RMS AC current transducer designed for non-sinusoidal waveforms. It features a single solid core element with a 15A input range and provides a 4-20 mADC output signal. The device operates on a 24 VDC power supply within a +/-10% tolerance and supports frequencies from 20 Hz to 5 kHz. It offers bidirectional measurement capability and is constructed for DIN rail or panel mounting.

Current Sensors Feature Summary

• True RMS measurement capability for accurate reading of complex AC waveforms
• Single solid core design eliminating the need for split-core installation
• Bidirectional current sensing for comprehensive flow monitoring
• Integrated conditioning module providing standardized analog output

Current Sensors Applications

• Phase-fired controlled heater systems
• Chopped waveform driver monitoring
• Harmonic current analysis in power distribution
• Quickly varying motor load tracking

Current Sensors Procurement Notes

Verify that the specific part number CR4120-15 matches the required 15A input range and 4-20 mADC output configuration. Confirm the 24 VDC power requirement aligns with existing system infrastructure. Ensure the solid core window size accommodates the target conductor diameter without modification. Cross-reference regulatory compliance markings such as UL 61010B-1 for intended industrial environments.

Current Sensors Selection Notes

Select this model when precise measurement of distorted AC currents is necessary, as standard average-responding sensors may yield inaccurate results. The solid core construction simplifies installation compared to split-core alternatives. Consider the 20 Hz to 5 kHz frequency response to ensure suitability for the specific application's harmonic content. Verify that the DIN rail or panel mount form factor fits the available enclosure space.

Current Sensors Part Context

This component belongs to the CR4100 Series of True RMS Current Transducers manufactured by CR Magnetics Inc. The series is engineered for high precision in phase-fired control systems where waveforms are not purely sinusoidal. The CR4120 variant specifically utilizes a single-element solid core architecture, distinguishing it from multi-element or transformer-based models in the broader product line.

Current Sensors Replacement Considerations

Direct substitutes include other CR4120 variants with different current ratings, such as the CR4120-30 or CR4120-75, if the input range needs adjustment while maintaining identical output and mounting specifications. Ensure any replacement maintains the True RMS functionality and 4-20 mADC output interface.