Carlo Gavazzi CTD9H4005AXXX solid-core current transformer with 400 A primary current and 5 A secondary output for industrial electrical measurement applications.
£126.43
The Carlo Gavazzi CTD9H4005AXXX is a reliable solid-core AC current transformer designed for accurate current measurement and monitoring in industrial electrical systems. Part of the proven Carlo Gavazzi CTD-9H series, this horizontal bus-bar mounted current transformer provides a 400 A primary current measurement with a 5 A secondary output for connection to energy meters, monitoring equipment and protection devices.
Designed for industrial power distribution applications, the CTD9H4005AXXX combines compact construction, reliable electrical performance and straightforward installation. Its horizontal mounting design supports bus-bars up to 35 x 125 mm, making it suitable for switchboards, control panels and electrical distribution equipment.
With a 400 A primary current rating and 5 A secondary output, the CTD9H4005AXXX is ideal for current monitoring, energy measurement and electrical protection applications requiring a dependable current transformation solution.
Current transformers such as the Carlo Gavazzi CTD9H4005AXXX provide safe and accurate current reduction for electrical measurement devices by converting high primary currents into standardised secondary signals. This enables efficient monitoring of electrical loads while maintaining safe separation between high-current conductors and measurement equipment.
The CTD-9H series is designed for industrial switchgear, energy management systems and electrical distribution equipment where dependable current measurement and long-term reliability are essential.
| Manufacturer | Carlo Gavazzi |
|---|---|
| Series | CTD-9H |
| Model | CTD9H4005AXXX |
| Product type | Solid-core AC current transformer |
| Primary current | 400 A |
| Secondary current | 5 A |
| Accuracy class | Class 1 |
| Rated secondary apparent power | 3 VA |
| Mounting type | Horizontal bus-bar mounting |
| Maximum bus-bar size | 35 x 125 mm |
| Hole diameter | 36 mm |
| Operating frequency | 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) |
| Short-time thermal current | Typical 100 In / 1 s |
| Dynamic current rating | 2.5 Ith |
| Protection rating | IP00 without terminal covers / IP20 with sealable terminal covers and wire terminals |
| Housing material | Self-extinguishing PA66 UL 94 V-0 |
| Standards | EN61869-2 |
The CTD9H4005AXXX is used for measuring and monitoring AC current in industrial electrical systems, switchboards and energy management applications.
The CTD9H4005AXXX has a rated primary current of 400 A.
The current transformer provides a standard 5 A secondary output for connection to compatible measuring and protection devices.
The CTD9H4005AXXX provides Class 1 accuracy for reliable current measurement.
The CTD9H4005AXXX uses a horizontal bus-bar mounting design suitable for industrial electrical distribution systems.
Carlo Gavazzi CTD current transformers are widely used by electrical engineers and automation professionals for accurate measurement, monitoring and protection of industrial power systems.
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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...