CR4450-30

Current Sensors Overview

The CR4450-30 is a two-element average RMS AC current transducer manufactured by CR Magnetics. It provides a calibrated DC output signal proportional to the input AC current, with a detection range of 0 to 30 A. The device features a bidirectional design and offers multiple output options including 0-5 VDC, 0-10 VDC, or 4-20 mADC. It operates on a 24 V supply voltage with a maximum current draw of 75 mA. The unit supports frequencies from 50 Hz to 400 kHz and has a response time of 250 ms. Accuracy is specified at ±0.5%. It is designed for DIN rail or panel mounting in a module package.

Current Sensors Feature Summary

• Provides calibrated DC output proportional to average RMS AC current
• Bidirectional sensing capability for multi-point applications
• Compatible with standard instrumentation via various output signals
• Constructed to meet UL, CSA, IEC, and BS EN safety standards

Current Sensors Applications

• Multi-point current sensing and control panels
• Motor fault monitoring
• Heating element monitoring
• Lighting element monitoring

Current Sensors Procurement Notes

Verify the specific output configuration (0-5 V, 0-10 V, or 4-20 mA) required for your system, as this is determined by the ordering suffix. Confirm that the 24 V DC supply voltage aligns with your existing infrastructure. Ensure the 30 A input range covers your maximum expected load. Check that the DIN rail or panel mounting style fits your enclosure design. Validate compliance with local regulatory requirements such as UL 61010B-1 or IEC 61010-1.

Current Sensors Selection Notes

Select the CR4450-30 when precise measurement of AC currents up to 30 A is required in industrial environments. Its bidirectional nature allows for monitoring current flow in both directions, which is essential for certain power distribution scenarios. The availability of analog voltage or current outputs ensures compatibility with a wide range of PLCs and data acquisition systems. Consider the 250 ms response time for application speed requirements. The robust construction meets international safety standards, making it suitable for harsh industrial settings.

Current Sensors Part Context

The CR4450 series consists of average RMS current transducers designed for cost-effective and high-accuracy current sensing. These devices are part of CR Magnetics' professional energy monitoring line, which includes voltage, frequency, and power sensors. The series is known for its value proposition, offering high accuracy and versatile mounting options. The two-element design enhances reliability and performance compared to single-element alternatives, providing excellent features for industrial monitoring applications.

Current Sensors Replacement Considerations

For higher current ranges within the same form factor, consider the CR4450-40 (40 A) or other variants in the CR4450 series. Single-element versions like the CR4410 may be suitable if only one channel is needed. For extended ranges beyond 600 A, a 5 Amp secondary current transformer can be used with these transducers. Verify that the replacement part matches the required output signal type and mounting configuration.