Call Us Today 01706 242050
CTD8S3005AXXX - 300 A Primary current, 5A output 30x80 mm

CTD8S3005AXXX – 300 A Primary current, 5A output 30×80 mm

Carlo Gavazzi CTD8S3005AXXX split-core current transformer with 300 A primary current and 5 A secondary output for industrial current measurement applications.

SKU: CTD8S3005AXXXMPN: CTD8S3005AXXX
Price
List Price £152.30 ex VAT
Your Price (ex VAT)
£152.30
Manufacturer Lead Time Please contact us for a delivery time before you order
Get the best trade prices Trade exclusive

Create a trade account to unlock exclusive pricing, special offers and more.

Sign up for a trade account Quick & easy setup
SUBTOTAL (EX VAT) £152.30
Trade pricing is personalised to your account

Manufacturer Lead Time

£152.30

Why Choose the Carlo Gavazzi CTD8S3005AXXX Current Transformer?

The Carlo Gavazzi CTD8S3005AXXX is a reliable split-core AC current transformer designed for accurate current measurement and monitoring in industrial electrical systems. 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 CTD8S3005AXXX features a split-core construction with bus-bar mounting capability, allowing easier installation and retrofit integration without requiring complete conductor removal. Its secure fixing system, sealable terminal covers and robust design make it suitable for industrial switchboards, control panels and power distribution applications.

With a 300 A primary current rating, 5 A secondary output and support for large conductor installations up to 30 mm × 80 mm bus-bars, the CTD8S3005AXXX provides dependable current transformation for industrial measurement and energy monitoring applications.

Key Advantages

  • 300 A / 5 A current transformation ratio for industrial current measurement applications.
  • Split-core construction simplifies installation and retrofit projects.
  • Class 3 accuracy for reliable general industrial measurement.
  • 30 mm × 80 mm maximum bus-bar compatibility for flexible installation options.
  • Multiple isolated fixing screws provide secure bus-bar mounting.
  • Sealable terminal covers improve connection safety and protection.

Key Features

  • Carlo Gavazzi CTD-8S series split-core current transformer.
  • 300 A rated primary current.
  • 5 A rated secondary current output.
  • 300:5 current ratio.
  • Class 3 accuracy.
  • 31 mm aperture diameter.
  • Maximum bus-bar size: 30 mm × 80 mm.
  • Operating frequency range of 48–62 Hz.
  • Bus-bar mounting with isolated fixing hardware.
  • Double screw terminals supporting up to 8-wire connections.
  • Sealable split-core fixing screws for secure installation.

Reliable Current Measurement for Industrial Power Systems

Current transformers such as the Carlo Gavazzi CTD8S3005AXXX 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.

Typical Applications

  • Industrial electrical distribution panels.
  • Energy monitoring and power management systems.
  • Electrical switchboards and control cabinets.
  • Motor control centres.
  • Power meters and monitoring equipment.
  • Industrial automation and electrical measurement systems.

Technical Specifications

Tick the specs you need, then view products that match.

Mounting Type Busbar
Rated Primary Current (A) 300 A
Secondary Current / Output 5 A
Aperture (mm) 80 × 30 mm
Accuracy Class Class 3
Device Type Split-core CT
Manufacturer Carlo Gavazzi
Series CTD-8S
Model CTD8S3005AXXX
Product type Split-core AC current transformer
Primary current 300 A
Secondary current 5 A
Current ratio 300:5
Accuracy class Class 3
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)
Security factor ≤5
Mounting type Bus-bar mounting
Aperture size 31 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
IP Rating IP20

Frequently Asked Questions

What is the Carlo Gavazzi CTD8S3005AXXX used for?

The CTD8S3005AXXX is used to measure AC current and provide a standard 5 A secondary output for electrical monitoring and metering equipment.

What is the current ratio of this transformer?

The transformer has a 300:5 ratio, with a 300 A primary current rating and 5 A secondary output.

What type of current transformer is the CTD8S3005AXXX?

The CTD8S3005AXXX is a split-core bus-bar current transformer designed for industrial electrical measurement applications.

What bus-bar size does this current transformer support?

The transformer supports bus-bars up to 30 mm × 80 mm.

What accuracy class does the CTD8S3005AXXX provide?

The CTD8S3005AXXX provides Class 3 accuracy for reliable general industrial current measurement applications.

Trusted by Industrial Electrical Engineers Worldwide

Carlo Gavazzi CTD-8S current transformers are widely used in industrial electrical measurement applications where accurate monitoring, flexible installation and dependable performance are required.

● Service Agreements

Credit Accounts

Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.

 Priority sourcing and supply support

 Flexible payment terms for qualifying organisations

 Support for engineering, maintenance, and operations

500 +

Stock lines ready to ship

1,000 +

Same day dispatches

3500 +

Customers supported

28 

Trusted Manfacturers

● frequently asked questions

Common questions about our products and support

 

At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.

What product ranges do you supply

We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products. 

Can you help specify the correct part?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

Do you have stock for urgent orders?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

What are your delivery times and costs?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

What about warranties, returns and faulty items?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

● latest blog

Discover  our latest insights and
expert advice

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

by | Aug 11, 2026 |

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.

LED Controls: Danfoss Drives Authorised Partner

LED Controls: Danfoss Drives Authorised Partner

by | Jan 17, 2026 |

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...

LED Controls: Your Complete Control Panel Solution

LED Controls: Your Complete Control Panel Solution

by | Jan 17, 2026 |

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...