CR3111-3000

Current Sense Transformers Overview

The CR3111-3000 is a current sense transformer manufactured by CR Magnetics Inc., designed for precise AC current monitoring in electronic circuits. It features a rated primary current of 100 A and operates within a frequency range of 20 Hz to 1 kHz. The device exhibits a DC resistance of 390 Ohms, ensuring stable signal integrity during operation. Physically, it measures 1.236 inches in length, 1.220 inches in width, and has a maximum seated height of 1.772 inches. The component utilizes a free-hanging in-line termination style, facilitating straightforward integration into PCB layouts or busbar systems without requiring complex mounting hardware.

Current Sense Transformers Feature Summary

• Provides accurate current sensing capabilities for alternating current applications
• Supports wide frequency bandwidth from 20 Hz to 1 kHz
• Features robust in-line construction for direct circuit integration

Current Sense Transformers Applications

• Industrial motor drive current monitoring
• Power supply overcurrent protection circuits
• Energy metering systems

Current Sense Transformers Procurement Notes

Verify the specific datasheet version with the manufacturer or authorized distributor before procurement. Confirm that the 100 A rating and 390 Ohm DC resistance align with your system requirements. Ensure the free-hanging in-line package fits your mechanical constraints. Check for RoHS compliance status if required by your manufacturing standards. Validate supplier authenticity to avoid counterfeit components.

Current Sense Transformers Selection Notes

Select this component when high-current AC sensing is required in a compact form factor. The 100 A rating suits heavy-duty industrial loads. Consider the 20 Hz to 1 kHz frequency response for standard power line and low-frequency switching applications. The in-line design simplifies assembly compared to split-core alternatives. Evaluate thermal performance under continuous load conditions.

Current Sense Transformers Part Context

CR Magnetics Inc. specializes in current and voltage sensing solutions, including transformers and sensors. The CR3111 series represents their current sense transformer lineup, focusing on reliability and precision. This model is part of a broader portfolio used in power electronics and industrial automation. The company emphasizes long-term stability and accuracy in harsh environments.

Current Sense Transformers Replacement Considerations

No public confirmed substitute part numbers are available for the CR3111-3000. Consult the manufacturer for potential cross-reference options if sourcing is unavailable.