CT500A

Overview

The CT500A is a toroidal current transformer from the Hammond Manufacturing CT series, designed for chassis mounting. It features a 500:5 current ratio and supports a primary current rating of 500 A with a secondary output of 5 A. The unit has a power rating of 20 VA and a primary voltage rating of 600 V. Physical dimensions are 4.75 inches in length, 1.75 inches in width, and 4.25 inches in height. It utilizes wire leads for termination.

Feature Summary

• Toroidal core design for non-invasive current sensing
• Chassis mount configuration for secure installation
• Wire lead termination for direct circuit connection

Applications

• Industrial current monitoring systems
• Electrical panel metering circuits
• Power distribution protection interfaces

Procurement Notes

Verify the specific manufacturing date code against project requirements to ensure component freshness. Confirm that the wire lead gauge and insulation type meet the ambient temperature ratings of the intended enclosure environment. Cross-reference the datasheet revision history to ensure compatibility with existing schematic designs and safety certifications required for the final assembly.

Selection Notes

Select this model when a 500:5 ratio is required for high-current industrial applications up to 500 A. Ensure the chassis space accommodates the specified 4.75 by 1.75 inch footprint. Verify that the 20 VA burden capacity matches the connected metering or relay load impedance to maintain accuracy within specified limits.

Part Context

Part of the CT series toroidal transformers, offering various ratios for industrial use. Manufactured by Hammond Manufacturing, known for robust electrical components. The CT500A specifically addresses high-current measurement needs where isolation and durability are critical for long-term operational reliability in demanding environments.

Replacement Considerations

CT200A offers a 200:5 ratio for lower current ranges. CT1000A provides a 1000:5 ratio for higher current applications. Both share similar chassis mounting styles but differ significantly in physical size and power ratings.