CTD8H2505AXXX – 250 A Primary current, 5A output 30×80 mm

Why Choose the Carlo Gavazzi CTD8H2505AXXX CTD-8H Current Transformer?

The Carlo Gavazzi CTD8H2505AXXX is a robust solid-core current transformer (CT) designed for AC current measurement in electrical distribution, energy monitoring and industrial power management applications. As part of the Carlo Gavazzi CTD-8H current transformer series, it converts current flowing through a primary conductor into a standard secondary current suitable for compatible energy meters, power analysers and monitoring equipment.

This current transformer features a 250 A rated primary current and 5 A secondary output, providing a 250/5 A transformation ratio. Its accuracy class 3 and 5 VA rated secondary apparent power make it suitable for general industrial current measurement and monitoring applications where a standard 5 A secondary signal is required.

The CTD8H2505AXXX is designed for cables and large busbars, with a nominal 80 × 30 mm busbar capacity. Its rectangular opening provides a 31 mm aperture height and 81 mm maximum busbar width, while the horizontal solid-core configuration and screw-terminal secondary connections make it suitable for installation in switchboards, distribution panels and industrial electrical systems.

Key Advantages

• Solid-core 250/5 A current transformer for AC current monitoring.
• 250 A rated primary current for industrial electrical circuits.
• 5 A secondary output compatible with suitable meters and power analysers.
• Accuracy class 3 for general electrical current measurement applications.
• 5 VA rated secondary apparent power.
• Large 80 × 30 mm nominal busbar capacity for substantial conductors.
• 31 mm aperture height and maximum busbar width of 81 mm.
• Horizontal configuration with screw-terminal secondary connections for practical panel installation.

Key Features

• Carlo Gavazzi CTD-8H current transformer series.
• 250 A rated primary current.
• 5 A rated secondary current.
• 250/5 A transformation ratio.
• 50:1 current ratio.
• Accuracy class 3.
• 5 VA rated secondary apparent power.
• FS 5 instrument security factor.
• 48–62 Hz operating frequency.
• 0.72 kV maximum system voltage.
• 80 × 30 mm nominal busbar size.
• 31 mm aperture height and 81 mm maximum busbar width.
• Horizontal solid-core construction with screw-terminal secondary connections.

Reliable Current Measurement for Electrical Monitoring

Current transformers such as the Carlo Gavazzi CTD8H2505AXXX allow AC current to be monitored by converting the current flowing through the primary conductor into a proportional lower secondary current. The resulting 5 A signal can be connected to compatible energy meters, multifunction meters, power analysers and electrical monitoring equipment without requiring the full primary current to pass directly through the measuring instrument.

The CTD-8H series is designed for industrial electrical distribution systems where cables or substantial busbars need to be accommodated. Its solid-core construction, standard 5 A secondary output, large rectangular conductor opening and horizontal configuration make the CTD8H2505AXXX particularly suitable for switchboards, distribution panels and monitoring systems requiring a 250 A primary current transformer.

Typical Applications

• Electrical current and energy monitoring systems.
• Industrial switchboards and distribution panels.
• Power analysers and multifunction electrical meters.
• Building energy management systems.
• Industrial automation and control panels.
• Busbar current and electrical load monitoring.