CR4120S-40

Current Sensors Overview

The CR4120S-40 is a True RMS AC current transducer designed for non-sinusoidal waveform measurement. It features a split core design and single element configuration. The device supports an input range of 0 to 40A AC with ±0.5% accuracy. Operating frequency spans 20Hz to 5kHz. It utilizes a 4-20mA output signal with a maximum load of 500 ohms. Power supply requirements are 24VDC ±10%. The unit operates within a temperature range of 0°C to 60°C and offers bidirectional detection capabilities.

Current Sensors Feature Summary

• True RMS measurement capability for accurate reading of distorted AC waveforms
• Split core construction allowing installation without circuit interruption
• Integrated conditioning electronics providing standard 4-20mA analog output

Current Sensors Applications

• Power quality monitoring in industrial facilities
• Energy management systems requiring precise RMS data
• Motor control and protection circuits with complex load profiles

Current Sensors Procurement Notes

Verify the specific ordering suffix matches the required input range and output type. Confirm that the split core aperture diameter accommodates the target cable size. Ensure the 24VDC power supply polarity aligns with the module connections. Check for any regional certification requirements such as UL or CE before finalizing the purchase order.

Current Sensors Selection Notes

Select this model when measuring AC currents with significant harmonic distortion where average-responding sensors fail. The split core design is suitable for retrofits where breaking the conductor is impractical. Ensure the operating frequency range covers the fundamental and relevant harmonics of the application. Verify that the 4-20mA output interface is compatible with the receiving PLC or data logger.

Current Sensors Part Context

This component belongs to the CR4120S series of True RMS AC current transducers from CR Magnetics Inc. The series is characterized by its ability to handle non-linear loads and provide accurate RMS values. The CR4120S-40 specifically denotes the 40A input range variant within this product line, utilizing a modular transformer-based sensing element.

Current Sensors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Users should consult manufacturer cross-reference guides for equivalent models with matching electrical specifications and mechanical dimensions.