CR4111-20

Current Sensors Overview

The CR4111-20 is a True RMS AC Current Transducer from the CR4100 series, designed for precise measurement of non-sinusoidal waveforms. It features a single-element solid core design with a 0.79-inch window and supports an input range of 0 to 20 AAC. The device provides a 0 to 10 VDC output signal with ±0.5% accuracy and operates within a frequency range of 20 Hz to 5 kHz. Powered by 24 VDC +/- 10%, it draws a maximum of 25 mA and has a response time of 250 ms. It is bidirectional, suitable for DIN rail or panel mounting, and functions within a temperature range of 0°C to 60°C.

Current Sensors Feature Summary

• True RMS measurement capability for accurate reading of chopped waves and phase-fired control systems
• Single-element solid core construction with a 0.79-inch window for direct conductor insertion
• Bidirectional operation supporting both positive and negative current flow detection
• Regulatory compliance with UL 61010B-1 and CAN/CSA-C22.2 standards

Current Sensors Applications

• Phase-fired controlled heater monitoring
• Quickly varying motor load analysis
• Industrial power quality assessment in non-linear load environments

Current Sensors Procurement Notes

Verify that the specific part number matches the required input range and output signal type, as the CR4100 series offers multiple variants with different suffixes for current ratings and outputs. Confirm that the application environment stays within the specified 0°C to 60°C operating temperature range. Ensure the power supply provides stable 24 VDC +/- 10% to maintain the stated ±0.5% accuracy. Check if the >= 2K Ω output load requirement aligns with the connected instrumentation impedance to prevent signal degradation.

Current Sensors Selection Notes

Select this model when high precision is required for distorted AC waveforms where standard average-responding transducers fail. The solid core design eliminates the need for split-core installation mechanisms, offering a more permanent and robust solution. Choose this unit if the system requires a voltage output (0-10 VDC) rather than current loop signaling. Consider the 250 ms response time for applications involving rapid current changes, ensuring it meets the dynamic requirements of the monitored equipment.

Current Sensors Part Context

The CR4111-20 belongs to the CR4100 series of True RMS Current Transducers manufactured by CR Magnetics. This series is engineered for industrial applications demanding higher accuracy than standard transducers. The product line includes single, two, and three-element configurations with various input ranges from 0.5 to 600 AAC. The CR4111-20 specifically addresses the need for monitoring moderate current levels up to 20 AAC with high fidelity in complex electrical systems.

Current Sensors Replacement Considerations

Direct substitutes include other models within the CR4100 series such as the CR4110-20 if a 0-5 VDC output is acceptable instead of 0-10 VDC. For split-core applications requiring the same specifications, the CR4111S-20 variant may be considered, though it lacks UL recognition. Cross-referencing with other manufacturers' True RMS transducers requires verifying matching input ranges, output types, and regulatory certifications.