CR8401-1000

Overview

The CR8401-1000 is a current sense transformer from the CR Magnetics Inc. series, designed for non-invasive current monitoring applications. It features a solid core construction with wire lead termination, suitable for in-line mounting configurations. The component operates within a frequency range of 20Hz to 1kHz and supports a maximum input current of 4.0 Arms. Key electrical specifications include a turns ratio of 1000:1, a secondary DC resistance of 49 Ohms, and a maximum RMS voltage of 2.2 V. The unit utilizes nano-crystalline amorphous wire technology for high-performance signal integrity.

Feature Summary

• Non-invasive solid core design for direct conductor insertion
• Nano-crystalline amorphous wire construction for enhanced magnetic efficiency
• Wire lead termination style facilitates flexible circuit integration
• High isolation capability suitable for ground fault detection

Applications

• Ground fault monitoring systems
• In-line current sensing for power electronics
• Motor protection circuits
• Industrial drive current feedback loops

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct configuration. Confirm that the required current rating and frequency response align with the target application's operational parameters. Check for RoHS compliance status if environmental regulations apply. Ensure the wire lead length and insulation type meet the mechanical constraints of the assembly. Cross-reference the distributor part number with the manufacturer's catalog to avoid substitution errors.

Selection Notes

Select this component when a non-invasive, in-line current measurement solution is required for frequencies between 20Hz and 1kHz. The 4.0 Arms maximum input current and 1000:1 ratio make it suitable for precise low-to-medium current monitoring. Consider the 49 Ohm secondary impedance for burden resistor matching. The solid core design eliminates air gaps, improving accuracy compared to split-core alternatives. Verify physical dimensions and lead spacing for PCB or harness compatibility.

Part Context

This model belongs to the CR8401 series of current sense transformers manufactured by CR Magnetics Inc. The series is characterized by the use of nano-crystalline amorphous wire, which offers superior magnetic properties compared to traditional ferrite cores. These transformers are engineered for high linearity and wide bandwidth, making them reliable components for sensitive measurement and protection applications in industrial and commercial power systems.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer's official cross-reference guide for compatible alternatives.