Carlo Gavazzi CTD3X4005AXXX solid core current transformer with 400 A primary current and 5 A secondary output for industrial current measurement applications.
SKU:CTD3X4005AXXXMPN:CTD3X4005AXXX
Price
List Price£50.66ex VAT
Your Price (ex VAT)
£50.66
Manufacturer Lead TimePlease contact us for a delivery time before you order
Get the best trade pricesTrade exclusive
Create a trade account to unlock exclusive pricing, special offers and more.
Why Choose the Carlo Gavazzi CTD3X4005AXXX Current Transformer?
The Carlo Gavazzi CTD3X4005AXXX is a high-quality solid core AC current transformer designed for accurate current measurement and monitoring in industrial power systems, energy management installations and electrical control applications. As part of the reliable Carlo Gavazzi CTD-3X current transformer series, it provides dependable conversion of high primary currents into a standard secondary output suitable for metering and protection equipment.
This current transformer is designed for applications requiring reliable measurement of large AC currents while maintaining electrical isolation between the primary circuit and measurement devices. The integrated mounting solution allows flexible installation on DIN rails, panels or bus-bar systems, making it suitable for a wide range of industrial electrical installations.
With a 400 A primary current rating and 5 A secondary output, the CTD3X4005AXXX provides accurate current transformation for monitoring and measurement systems. Its 41 mm window diameter and robust CTD-3X construction make it suitable for cable and bus-bar applications in industrial switchboards and control panels.
Key Advantages
400 A / 5 A current transformation ratio for industrial measurement applications.
Solid core design provides reliable and stable current sensing.
Flexible installation with DIN rail, panel and bus-bar mounting options.
Class 0.5 accuracy for precise current measurement.
Integrated mounting accessories simplify installation and commissioning.
Suitable for energy monitoring, electrical metering and protection systems.
Key Features
Carlo Gavazzi CTD-3X series current transformer.
400 A rated primary current.
5 A rated secondary current output.
400:5 current ratio.
Class 0.5 accuracy.
41 mm window diameter.
Operating frequency range of 45–65 Hz.
DIN rail, panel and cable/bus-bar mounting capability.
Screw terminal connections for secure wiring.
Solid core construction for permanent installations.
Reliable Current Measurement for Industrial Power Systems
Current transformers such as the Carlo Gavazzi CTD3X4005AXXX allow high electrical currents to be safely measured by reducing the primary current to a standard secondary signal. This enables accurate monitoring through energy meters, protection relays and industrial measurement equipment.
The CTD-3X series combines accurate measurement performance with flexible mounting options, helping electrical engineers integrate current monitoring into switchboards, distribution systems and automation installations.
Typical Applications
Industrial electrical distribution panels.
Energy monitoring and power measurement systems.
Motor control centres and switchgear assemblies.
Power management and monitoring installations.
Electrical protection and metering equipment.
Industrial automation and control systems.
Technical Specifications
Tick the specs you need, then view products that match.
Mounting Type
Busbar, DIN rail, Panel / base
Device Type
Solid-core CT
Rated Primary Current (A)
400 A
Secondary Current / Output
5 A
Aperture (mm)
41 mm
Accuracy Class
Class 0.5
Manufacturer
Carlo Gavazzi
Series
CTD-3X
Model
CTD3X4005AXXX
Product type
Solid core AC current transformer
Primary current
400 A
Secondary current
5 A
Current ratio
400:5
Accuracy class
Class 0.5
Frequency range
45–65 Hz
Window diameter
41 mm
Maximum bus-bar size
51 mm × 15 mm
Mounting type
DIN rail / panel / bus-bar mounting
Terminal type
Screw connection
Rated insulation level
3 kV / 1 min at 50 Hz
Maximum system voltage
0.72 kV
Protection rating
IP20 with terminal covers
IP Rating
IP20
Frequently Asked Questions
What is the Carlo Gavazzi CTD3X4005AXXX used for?
The CTD3X4005AXXX is used to measure high AC currents and provide an isolated 5 A secondary output for electrical metering and monitoring equipment.
What is the current ratio of this transformer?
The current transformer has a 400:5 ratio, with a 400 A primary current and 5 A secondary output.
What accuracy class does the CTD3X4005AXXX provide?
The transformer provides a Class 0.5 accuracy rating for reliable current measurement.
How can this current transformer be mounted?
The CTD3X4005AXXX supports DIN rail, panel and bus-bar mounting for flexible installation in electrical systems.
What applications are suitable for this current transformer?
It is suitable for industrial switchboards, energy monitoring systems, power measurement installations and electrical protection applications.
Trusted by Industrial Electrical Engineers Worldwide
Carlo Gavazzi CTD-3X current transformers are widely used in industrial energy measurement and control applications where accurate current monitoring, dependable operation and flexible installation are required.
Mounting Type
Busbar, DIN rail, Panel / base
Device Type
Solid-core CT
Rated Primary Current (A)
400 A
Secondary Current / Output
5 A
Aperture (mm)
41 mm
Accuracy Class
Class 0.5
Manufacturer
Carlo Gavazzi
Series
CTD-3X
Model
CTD3X4005AXXX
Product type
Solid core AC current transformer
Primary current
400 A
Secondary current
5 A
Current ratio
400:5
Accuracy class
Class 0.5
Frequency range
45–65 Hz
Window diameter
41 mm
Maximum bus-bar size
51 mm × 15 mm
Mounting type
DIN rail / panel / bus-bar mounting
Terminal type
Screw connection
Rated insulation level
3 kV / 1 min at 50 Hz
Maximum system voltage
0.72 kV
Protection rating
IP20 with terminal covers
IP Rating
IP20
No documents available for this product.
UK delivery
Delivery options
Free UK delivery on orders over £200 ex VAT. Order in-stock items before 2pm Monday to Friday for next-day delivery.
This productLead time on request
Please contact us for a delivery time before you order
Standard delivery
£8 ex VAT · free over £200
UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
Collect from our showroom
Mon–Fri, 8am–5pm
Order and pay online, then collect from our showroom.
Please allow 15–30 minutes after ordering for us to prepare your order.
Northern Ireland, ROI & export
Priced at checkout
We deliver to Northern Ireland, the Republic of Ireland and overseas.
Delivery is calculated at checkout based on your destination.
Orders with mixed availability
Shipped complete
If part of your order is on a lead time, we hold it and send everything together.
Need the in-stock items sooner? Ask us and we can split the delivery.
Business customer returns
Returns & order support
Need to return an item? Find the guidance for your order below, then contact our team before sending anything back.
Stocked items
Request within 30 days
Changed your mind or ordered the wrong item? Request a return within 30 days of receipt. There is no restocking charge.
Items must be unused, in resalable condition and in their original packaging, and returns need our approval first. Return carriage is at your cost, and the original delivery charge is not refunded.
Faulty or damaged items
Tell us as soon as possible
Faulty, damaged on delivery or the wrong product supplied? Contact our team as soon as possible with the details.
We will review the issue and arrange an appropriate resolution under our terms and conditions and your statutory rights.
Made-to-order items
Manufacturer approval needed
Manufactured, configured and special-order products can only be returned with the manufacturer’s approval. Any handling charge is agreed with you when you request the return.
This does not affect claims for faulty goods or items that do not meet the agreed specification.
Let’s get your return sorted.
Send your order number, product details and reason for return. For faults or delivery damage, include photographs if available. We will confirm the next steps.
The 30-day return request period applies to change-of-mind returns for stocked items. It does not limit your statutory rights for faulty or non-conforming goods.
● 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.
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...
