CR8349-1500

Overview

The CR8349-1500 is a current sense transformer from the CR8300 series by CR Magnetics Inc. It features a non-invasive solid core design with a 1500:1 current ratio and a maximum input current range of 75 Arms. The device operates within a frequency range of 20Hz to 1kHz and has a DC resistance (DCR) of 80 Ohms. It supports a maximum RMS voltage of 15.5 V and utilizes through-hole mounting with PC pin termination. Physical dimensions include a 0.35-inch inner diameter opening, measuring 1.024 inches in length, 0.670 inches in width, and up to 1.102 inches in height.

Feature Summary

• Non-invasive solid core construction for direct conductor insertion
• High isolation capability suitable for sensitive measurement circuits
• Through-hole PCB mounting for stable mechanical integration

Applications

• Current sensing in power supply units
• Motor drive protection circuits
• Industrial automation control systems

Procurement Notes

Verify the specific suffix requirements against the manufacturer's latest datasheet to ensure correct packaging and terminal configuration. Confirm that the 75 Arms rating aligns with peak load conditions in the target application. Check RoHS compliance status if environmental regulations apply to the end product. Ensure the 20Hz minimum frequency requirement does not conflict with low-frequency operational scenarios.

Selection Notes

Select this component when a high-isolation, non-invasive current measurement solution is required for AC signals between 20Hz and 1kHz. The 1500:1 ratio provides significant signal attenuation, making it suitable for interfacing with low-voltage microcontroller ADCs or op-amp circuits. Consider the 80 Ohm secondary resistance when designing burden resistor networks to maintain linearity within the 75 Arms limit.

Part Context

This part belongs to the CR8300 series of general-purpose vertical PCB current transformers. It shares the same physical footprint and mounting style as variants like the CR8349-1000-N and CR8349-2500-N, differing primarily in turns ratio and current handling capacity. The series is designed for robust industrial environments requiring reliable galvanic isolation.

Replacement Considerations

Direct substitutes within the same series include the CR8349-1000-N and CR8349-2500-N. These alternatives offer different current ratios (1000:1 and 2500:1 respectively) and DCR values (32 Ohms and unspecified in snippet but implied different). Verify that the alternative ratio matches the system's signal conditioning requirements before substitution.