CT1040

Overview

The CT-1040 is a current sense transformer manufactured by Amgis, LLC, designed for through-hole mounting. It features a primary current rating of 40 A and operates at frequencies of 50/60 Hz. The device provides a turns ratio of 1:1000, facilitating precise current monitoring in electrical circuits. Its secondary winding exhibits a DC resistance (DCR) of 49.3 Ohms. The component utilizes a non-invasive solid core design, ensuring isolation between the primary circuit and the sensing output. Physical dimensions include a maximum seated height of 1.374 inches (34.90 mm), suitable for standard PCB layouts requiring robust current sensing capabilities.

Feature Summary

• Non-invasive solid core construction for isolated current measurement
• High accuracy turns ratio of 1:1000 for precise signal scaling
• Through-hole termination style for secure mechanical attachment
• Optimized for 50/60 Hz operational frequency ranges

Applications

• AC power supply current monitoring
• Industrial motor drive feedback loops
• Power quality analysis equipment
• Electrical protection relay systems

Procurement Notes

Verify the specific ordering suffix to ensure compatibility with required mounting configurations and tolerance levels. Confirm that the 40 A primary rating aligns with the maximum expected load current to prevent saturation. Check datasheet specifications for thermal limits under continuous operation conditions. Ensure the 49.3 Ohm secondary impedance matches the input requirements of the downstream signal conditioning circuitry. Validate RoHS compliance status if environmental regulations apply to the final assembly.

Selection Notes

Select this component when a high-isolation current sensor is required for low-frequency AC applications. The 1:1000 ratio suits scenarios where minimal loading effect on the primary conductor is critical. Consider the through-hole form factor if surface-mount alternatives are unsuitable for mechanical stress reasons. Evaluate the 40 A limit against peak transient currents to maintain linearity. Compare the physical footprint against available board space constraints before integration.

Part Context

The CT-1040 belongs to Amgis, LLC's series of current sense transformers, which focus on providing reliable isolation and accurate signal transfer for power management systems. This model specifically targets general-purpose AC current monitoring tasks. It complements other variants in the lineup that offer different current ratings or frequency responses. The product supports engineers designing systems requiring galvanic isolation without introducing significant phase shift or amplitude error at standard utility frequencies.

Replacement Considerations

Direct substitutes must match the 1:1000 turns ratio and 40 A primary rating. Verify that alternative components support 50/60 Hz operation and similar DCR values. Ensure the replacement maintains the through-hole package type and comparable physical dimensions. Cross-reference manufacturer datasheets for pinout compatibility and thermal performance equivalence.