Carlo Gavazzi CTD8S4005AXXX split-core current transformer with 400 A primary current and 5 A secondary output for industrial current measurement applications.
£153.58
The Carlo Gavazzi CTD8S4005AXXX is a high-quality split-core AC current transformer designed for accurate measurement and monitoring of industrial electrical currents. As part of the proven Carlo Gavazzi CTD-8S current transformer series, it provides a standard 5 A secondary output for connection to energy meters, monitoring equipment and electrical protection systems.
The CTD8S4005AXXX features a split-core design with bus-bar mounting capability, allowing easier installation and retrofit integration without requiring complete conductor removal. Its robust construction includes secure fixing screws, double screw terminals and sealable terminal covers for dependable operation in industrial switchboards and power distribution applications.
With a 400 A primary current rating, 5 A secondary output, Class 1 accuracy and a 31 mm × 81 mm opening, the CTD8S4005AXXX is designed for reliable current measurement in industrial energy monitoring and electrical distribution systems.
Current transformers such as the Carlo Gavazzi CTD8S4005AXXX allow electrical systems to be monitored safely by reducing the measured primary current to a standard secondary signal. This enables accurate connection to energy meters, monitoring devices and electrical protection equipment.
The CTD-8S series combines split-core installation convenience with dependable current measurement performance, making it suitable for industrial installations where reliable monitoring and secure mounting are required.
| Manufacturer | Carlo Gavazzi |
|---|---|
| Series | CTD-8S |
| Model | CTD8S4005AXXX |
| Product type | Split-core AC current transformer |
| Primary current | 400 A |
| Secondary current | 5 A |
| Current ratio | 400:5 |
| Accuracy class | Class 1 |
| Frequency range | 48–62 Hz |
| Maximum system voltage | 0.72 kV |
| Rated insulation level | 3 kV / 1 min at 50 Hz |
| Insulation class | E (maximum 75 °C) |
| Security factor | ≤5 |
| Mounting type | Bus-bar mounting |
| Opening size | 31 mm × 81 mm |
| Maximum bus-bar size | 30 mm × 80 mm |
| Housing material | Self-extinguishing UL 94 V-0 material |
| Connection type | Double screw terminals |
| Protection rating | IP00 without terminal covers / IP20 with sealable terminal covers |
| Working temperature | -25 °C to product-specific maximum rating |
The CTD8S4005AXXX is used to measure AC current and provide a standard 5 A secondary output for electrical monitoring and metering equipment.
The transformer has a 400:5 ratio, with a 400 A primary current rating and 5 A secondary output.
The CTD8S4005AXXX is a split-core bus-bar current transformer designed for industrial electrical measurement applications.
The transformer supports bus-bars up to 30 mm × 80 mm.
The CTD8S4005AXXX provides Class 1 accuracy for reliable industrial current measurement applications.
Carlo Gavazzi CTD-8S current transformers are widely used in industrial electrical measurement applications where accurate monitoring, flexible installation and dependable performance are required.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...