CR4420S-15

Current Sensors Overview

The CR4420S-15 is an average RMS AC current transducer manufactured by CR Magnetics Inc. It features a split core design for non-intrusive installation and provides a calibrated DC output proportional to the AC current input. The device supports a sensing range of 15A with a frequency response of 50Hz to 400Hz. It operates on a 24VDC supply and delivers a 4mA to 20mA analog output signal. Key electrical specifications include a maximum supply current of 45mA, bidirectional polarity, and ±0.5% accuracy. The unit is housed in a module package suitable for DIN rail or panel mounting.

Current Sensors Feature Summary

• Provides calibrated DC output proportional to AC current input
• Split core design allows for easy installation around conductors
• Bidirectional measurement capability for positive and negative current flow
• Includes printed connection diagram on the case for simplified wiring

Current Sensors Applications

• Industrial process control systems requiring AC current monitoring
• Power distribution panels for load management
• Energy metering and power quality analysis equipment
• Automation systems utilizing 4-20mA loop interfaces

Current Sensors Procurement Notes

Verify that the specific order matches the CR4420S-15 model designation to ensure the 15A sensing range is correct. Confirm that the application environment falls within the specified operating temperature and frequency ranges. Ensure the 24VDC power supply polarity is connected correctly to avoid damage. Check for RoHS compliance requirements if applicable to your manufacturing standards. Validate that the load resistance connected to the 4-20mA output does not exceed the transmitter's driving capability.

Current Sensors Selection Notes

Select this component when a split-core solution is required for retrofitting existing busbars or cables without breaking the circuit. Choose this model over fixed-core variants if frequent maintenance or inspection of the primary conductor is anticipated. Consider the 15A rating against peak and continuous load currents to prevent saturation. Verify that the 50Hz to 400Hz frequency range aligns with the system's power line or inverter output frequencies. Ensure the physical dimensions fit the available DIN rail space or panel cutout.

Current Sensors Part Context

The CR4420S series represents CR Magnetics' line of average RMS AC current transducers designed for industrial instrumentation. These devices bridge the gap between high-current AC lines and low-voltage DC control systems. The series includes various current ratings, such as the 15A and 75A variants, sharing similar form factors and output characteristics. This family is commonly used in applications demanding isolation and accurate current representation for feedback loops.

Current Sensors Replacement Considerations

Direct substitutes may include other models from the CR4420S series with different current ratings, such as CR4420S-75, provided the sensing range is adjusted accordingly. Cross-brand replacements require matching the 4-20mA output, 24VDC supply, split core aperture size, and accuracy specifications. Verify that any alternative maintains the same bidirectional functionality and frequency response range.