CR8449-2500-N

Overview

The CR8449-2500-N is a non-invasive current sense transformer manufactured by CR Magnetics Inc., designed for through-hole mounting. It features a solid core configuration with PC pin termination and supports a nominal current rating of 50 A. The device operates within a frequency range of 20 Hz to 1 kHz and exhibits a DC resistance of 134 Ohms. Its physical dimensions are specified as 1.024 inches in length, 0.670 inches in width, and a maximum installation height of 1.102 inches.

Feature Summary

• Non-invasive solid core design for direct conductor insertion
• Through-hole mounting with PC pin termination
• Optimized performance within the 20 Hz to 1 kHz frequency band

Applications

• Current sensing in power supply circuits
• Isolation monitoring in industrial control systems
• Feedback loop implementation in switching regulators

Procurement Notes

Verify that the specific part number matches the required current ratio and DC resistance specifications for the target circuit design. Confirm that the through-hole package dimensions align with the printed circuit board layout constraints. Ensure compliance with RoHS3 standards if environmental regulations apply to the final assembly process.

Selection Notes

Select this component when a 50 A nominal current rating and a 2500:1 turns ratio are required for non-invasive measurement. Consider the 134 Ohm DC resistance value for burden resistor calculations. This model is suitable for applications requiring solid core construction rather than split-core designs, ensuring stable magnetic coupling within the specified frequency range.

Part Context

This component belongs to the CR8449 series of current sense transformers from CR Magnetics Inc. It shares the series' non-invasive solid core architecture but differs from variants like the CR8349 series in its specific electrical parameters and mounting style. The designation indicates a standard through-hole configuration distinct from free-hanging or revenue-grade specialized models.

Replacement Considerations

Direct substitutes include the CR8349-2500-N, which offers similar electrical characteristics but may differ in physical mounting requirements. Verify that any replacement maintains the 50 A rating and 2500:1 ratio while accommodating the specific PCB footprint and height restrictions of the original design.