CTD9H5005AXXX – 500 A Primary current, 5A output 125×35 mm

Why Choose the Carlo Gavazzi CTD9H5005AXXX Current Transformer?

The Carlo Gavazzi CTD9H5005AXXX is a reliable solid-core current transformer (CT) designed for accurate measurement of high AC currents in industrial electrical installations, energy monitoring systems and control panels. As part of the Carlo Gavazzi CTD9H series, it converts a rated primary current of 500 A into a standard 5 A secondary output for connection to compatible meters, monitoring equipment and protection devices.

Designed for through-feed current measurement, the CTD9H5005AXXX allows the monitored conductor or busbar to pass through the transformer opening without requiring a direct electrical connection to the primary circuit. Its solid-core construction provides a dependable solution for permanent installations where accurate current measurement and long-term reliability are required.

With a 500 A primary current rating, 5 A secondary current and accuracy class 0.5, the CTD9H5005AXXX is well suited to precision metering and energy-management applications. The CTD9H format accommodates busbars up to approximately 125 × 35 mm and also provides a 36 mm diameter opening, providing installation flexibility in industrial switchboards and distribution equipment.

Key Advantages

• Reliable solid-core current transformer for industrial AC current measurement.
• 500 A rated primary current for high-current electrical circuits.
• Standard 5 A secondary output for compatible metering and monitoring equipment.
• Class 0.5 accuracy supports precise current and energy measurement.
• Large opening suitable for busbars up to approximately 125 × 35 mm.
• Through-feed design provides electrical isolation between the primary conductor and measurement circuit.

Key Features

• Carlo Gavazzi CTD9H current transformer series.
• 500 A rated primary current.
• 5 A rated secondary current.
• 500/5 A transformation ratio, equivalent to 100:1.
• Accuracy class 0.5.
• 2 VA rated secondary apparent power at class 0.5.
• 36 mm circular conductor opening.
• Suitable for busbars up to approximately 125 × 35 mm.
• Solid-core, through-feed construction for permanent installations.
• Suitable for panel, busbar and industrial electrical installations.

Accurate Current Measurement for Electrical Monitoring

Current transformers such as the Carlo Gavazzi CTD9H5005AXXX proportionally reduce high primary currents to a standard secondary current that can be safely measured by compatible instrumentation. With a 500/5 A ratio, a 500 A primary current corresponds to a 5 A secondary current, allowing meters and monitoring devices to measure high-current circuits without being connected directly in series with the full load current.

The CTD9H series is designed for industrial switchboards, distribution systems and energy-monitoring installations where dependable current measurement is essential. The combination of solid-core construction, a large busbar opening and class 0.5 measurement accuracy makes the CTD9H5005AXXX particularly suitable for permanent installations requiring precise monitoring of electrical loads.

Typical Applications

• Industrial electrical switchboards and distribution panels.
• Energy meters and power monitoring systems.
• Building energy management systems.
• Industrial machinery and automation panels.
• Electrical load and consumption monitoring.
• Power quality and electrical measurement equipment.
• Commercial and industrial busbar installations.