CR4420-40

Current Sensors Overview

The CR4420-40 is a single-element, solid-core AC current transducer from the CR Magnetics CR4400 series. It measures alternating current with a detection range of 40A and provides a proportional DC output signal. The device operates within a frequency range of 50Hz to 400Hz and maintains an accuracy of ±0.5%. It requires a 24V power supply with a maximum current consumption of 75mA. The unit features bidirectional polarity and a response time of 250ms. Designed for module installation, it supports both DIN rail and panel mounting configurations.

Current Sensors Feature Summary

• Provides average RMS measurement for sinusoidal alternating current waveforms
• Features low-cost construction suitable for DIN rail or panel mounting
• Includes connection diagram printed directly on the case for simplified integration

Current Sensors Applications

• Multi-point current sensing systems
• Motor fault monitoring applications
• Heating element monitoring circuits
• Lighting element monitoring setups

Current Sensors Procurement Notes

Verify that the specific order matches the solid-core configuration required for the application, as split-core variants exist within the same product family. Confirm that the operating frequency range aligns with the system's electrical parameters. Ensure the power supply meets the 24V requirement and check environmental ratings against installation conditions. Cross-reference regulatory compliance standards such as UL and IEC if required by local safety codes.

Current Sensors Selection Notes

Select this model when a single-phase, solid-core solution is needed for currents up to 40A. Consider the CR4400 series for its high accuracy and compatibility with commercial instrumentation. Evaluate the 250ms response time against control loop requirements. Compare alternative channel counts if multi-point sensing is necessary, noting that other models in the series offer different input ranges and element configurations.

Current Sensors Part Context

This component belongs to the CR4400 series of RMS AC current transducers manufactured by CR Magnetics Inc. The series is designed to produce DC output signals proportional to average RMS input AC current. These devices are engineered for value and performance in industrial automation environments, offering reliable sensing capabilities across various electrical monitoring tasks.

Current Sensors Replacement Considerations

Direct substitutes include other models within the CR4400 series, such as the CR4410 or CR4420 variants, which share similar mounting and interface characteristics but differ in current rating or element count. Verify window size and input range compatibility before substitution.