The CR4420S series from CR Magnetics Inc. is a line of AC current sensors and transducers designed for measuring currents ranging from 10A to 2000A. These sensors are widely used in industrial settings where accurate current monitoring is critical, such as in power distribution panels, motor control centers, and electrical substations.

One key feature of these sensors is their non-contact design, which allows for safe and reliable current measurement without interrupting the circuit. They come in both clamp-on and through-hole configurations, making them versatile for different installation scenarios. Engineers tend to reach for these when they need precise current measurements that don’t interfere with the circuit operation.

If you're working on projects involving motor drives, inverters, or any system where the current needs to be continuously monitored, the CR4420S series can provide the necessary accuracy and reliability. Another practical benefit is their robustness; they can withstand harsh environmental conditions, which is crucial in outdoor or industrial environments.

These sensors also offer good linearity and repeatability, ensuring consistent readings over time. This consistency is particularly important in applications where current levels need to be accurately tracked and controlled, such as in variable frequency drives or energy management systems.