CT75A

Overview

The CT75A is an industrial toroidal current transformer manufactured by Hammond Manufacturing, designed for chassis mounting. It features a primary-to-secondary turns ratio of 75:5 and supports a maximum primary current rating of 75 A with a secondary rated current of 1 A. The unit has a power rating of 2 VA and a maximum primary voltage rating of 600 V. Physical dimensions include a height of 4.75 inches, a length of 4.25 inches, and a width of 1.75 inches, with a unit weight of approximately 599 grams. It utilizes wire leads for termination.

Feature Summary

• Toroidal core construction for efficient magnetic coupling
• Chassis mount design for secure panel installation
• Wire lead termination for direct circuit integration

Applications

• Industrial electrical monitoring systems
• Power distribution equipment
• Electrical control panels

Procurement Notes

Verify the specific accuracy class requirements against official datasheets before procurement, as standard specifications may vary by production batch. Confirm that the physical dimensions and wire lead configurations match the existing panel layout constraints. Ensure the operating environment temperature range aligns with the component's rated limits to maintain performance integrity during long-term deployment.

Selection Notes

Select this model when a 75:5 current ratio is required for primary currents up to 75 A in industrial settings. The 2 VA power rating dictates the burden capacity for connected measurement devices. Consider the chassis mount style and wire lead termination type to ensure compatibility with the intended enclosure design and wiring infrastructure without requiring additional adapters.

Part Context

The CT75A belongs to the CT series of industrial current transformers from Hammond Manufacturing. This series provides toroidal transformers for various current ratios, all sharing similar chassis-mount form factors. The CT75A specifically addresses applications requiring precise current monitoring at lower amperage levels compared to higher-rated siblings like the CT400A or CT1000A.

Replacement Considerations

Direct substitutes within the same series include models with identical mechanical footprints but different ratios, such as the CT200A or CT400A, provided the electrical ratio matches the system requirement. Cross-series replacements require verification of mounting hole patterns and terminal types.