CR3110-3000

Current Sense Transformers Overview

The CR3110-3000 is a current sense transformer manufactured by CR Magnetics Inc. It features a split-core design for easy installation around conductors and operates within a frequency range of 20 Hz to 1 kHz. The device has a rated primary current of 75 A AC and utilizes 3000 turns for signal transformation. Electrical characteristics include an impedance of 515 mOhm and a maximum voltage rating of 15.0 V RMS. The component is available in a free-hanging, in-line configuration with lead-free construction.

Current Sense Transformers Feature Summary

• Split-core architecture enables non-intrusive mounting on existing busbars or cables without circuit interruption.
• High-turns ratio design provides precise current sensing for microcontroller-based monitoring systems.
• UL recognized certification ensures compliance with safety standards for industrial applications.

Current Sense Transformers Applications

• Microcontroller-based power monitoring circuits
• Industrial motor drive current feedback
• Smart metering and energy management systems

Current Sense Transformers Procurement Notes

Verify the specific suffix (e.g., -72) if required for packaging or tape-and-reel configuration, as standard listings may indicate bulk packaging. Confirm that the 75 A AC rating aligns with your peak load requirements. Ensure the operating frequency range of 20 Hz to 1 kHz matches your system's signal profile. Check for UL recognition marks on the physical unit to validate safety compliance.

Current Sense Transformers Selection Notes

Select this model when a non-invasive current measurement solution is needed for AC signals between 20 Hz and 1 kHz. The split-core design is critical for retrofitting or maintaining existing installations where conductor disconnection is not feasible. Consider the 515 mOhm impedance for burden resistor calculations and ensure the 15.0 V RMS limit is not exceeded in your secondary circuit design.

Current Sense Transformers Part Context

CR Magnetics specializes in high-precision current and voltage sensing components. The CR3110 series represents their general-purpose wire lead current transformers, designed for cost-effective integration into power electronics. These components are widely used in applications requiring reliable galvanic isolation and accurate current replication for control and protection logic.

Current Sense Transformers Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Verify pinout compatibility and electrical parameters before considering alternative manufacturers' split-core current transformers.

Current Sense Transformers FAQ

What is the primary current rating of the CR3110-3000?

The CR3110-3000 is rated for 75 A AC primary current.

Does the CR3110-3000 require conductor disconnection for installation?

No, it features a split-core design that allows installation around an existing conductor without disconnecting it.

What is the operational frequency range?

The device operates effectively within a frequency range of 20 Hz to 1 kHz.