CTV4X400A333MV – Split core current transformer 400A primary
Carlo Gavazzi CTV4X400A333MV split-core current sensor with a 400 A primary current rating and 333 mV output for industrial and energy monitoring applications.
SKU:CTV4X400A333MVMPN:CTV4X400A333MV
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Why Choose the Carlo Gavazzi CTV4X400A333MV Split-Core Current Sensor?
The Carlo Gavazzi CTV4X400A333MV is a compact and reliable split-core current sensor designed for accurate electrical current measurement in energy monitoring, power management and industrial automation systems. As part of the trusted Carlo Gavazzi CTV series, it provides a flexible solution for retrofit installations where existing conductors must be monitored without disconnecting cables.
This split-core current transformer features a practical opening and closing mechanism that enables quick installation around existing cables. The 333 mV secondary output allows direct connection to compatible Carlo Gavazzi energy analysers and power monitoring equipment, making it ideal for modern energy management applications.
With a 400 A primary current rating, Class 1 accuracy and a compact CTV4X housing, the CTV4X400A333MV is suitable for commercial and industrial electrical monitoring systems where reliable current measurement and simple installation are required.
Key Advantages
Compact split-core current sensor designed for retrofit applications.
400 A primary current measurement capability for industrial energy monitoring.
333 mV secondary output compatible with Carlo Gavazzi monitoring devices.
Fast installation without disconnecting existing electrical cables.
Class 1 accuracy for dependable current measurement.
Suitable for residential, commercial and industrial power monitoring applications.
Key Features
Carlo Gavazzi CTV split-core current sensor series.
400 A rated primary current.
333 mV secondary output voltage.
CTV4X split-core construction for simple retrofit installation.
Maximum cable diameter up to 21 mm.
Equivalent to Class 1 accuracy according to EN IEC 61869-2.
IP20 protection rating.
PA66 housing material for durable industrial use.
Reliable Current Measurement for Energy Monitoring
Split-core current sensors such as the Carlo Gavazzi CTV4X400A333MV allow engineers to monitor electrical loads without interrupting existing installations. The hinged split-core design simplifies installation in electrical panels and makes the sensor particularly effective for retrofit energy monitoring projects.
The CTV series is designed for use with compatible Carlo Gavazzi energy analysers, including solutions such as EM210 MV, EM271 and EM530 MV systems, helping users measure consumption, analyse performance and improve energy efficiency.
Typical Applications
Industrial energy monitoring systems.
Commercial building power measurement.
Electrical distribution monitoring.
Machine energy consumption analysis.
Retrofit current transformer installations.
Power management and automation systems.
Technical Specifications
Manufacturer
Carlo Gavazzi
Series
CTV Split-Core Current Sensors
Model
CTV4X400A333MV
Product type
Split-core current sensor
Rated primary current
400 A
Secondary output
333 mV
Accuracy class
Class 1
Rated system voltage
600 V AC
Maximum continuous current
1.2 × In
Maximum cable diameter
21 mm
Secondary cable
2 m, 24 AWG
Protection rating
IP20
Housing material
PA66
Operating temperature
-40 to +65 °C
Storage temperature
-45 to +80 °C
Weight
approx. 200 g
Frequently Asked Questions
What is the Carlo Gavazzi CTV4X400A333MV used for?
The CTV4X400A333MV is a split-core current sensor used for measuring electrical current in energy monitoring and industrial automation applications.
What current rating does this sensor support?
The sensor supports a 400 A primary current rating.
What output signal does the CTV4X400A333MV provide?
The sensor provides a 333 mV secondary output for connection to compatible energy monitoring equipment.
Can this current sensor be installed without disconnecting cables?
Yes, the split-core design allows installation around existing conductors without disconnecting cables, making it suitable for retrofit applications.
What monitoring equipment is compatible with this sensor?
The CTV4X400A333MV is designed for use with compatible Carlo Gavazzi energy analysers and monitoring systems.
Trusted by Energy Monitoring Professionals
Carlo Gavazzi CTV split-core current sensors are widely used by automation engineers and energy management professionals to provide accurate measurement, simple installation and reliable monitoring of electrical systems.
Manufacturer
Carlo Gavazzi
Series
CTV Split-Core Current Sensors
Model
CTV4X400A333MV
Product type
Split-core current sensor
Rated primary current
400 A
Secondary output
333 mV
Accuracy class
Class 1
Rated system voltage
600 V AC
Maximum continuous current
1.2 × In
Maximum cable diameter
21 mm
Secondary cable
2 m, 24 AWG
Protection rating
IP20
Housing material
PA66
Operating temperature
-40 to +65 °C
Storage temperature
-45 to +80 °C
Weight
approx. 200 g
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Delivery
We offer fast UK delivery on all stocked items. Orders placed before 3pm Monday to Friday are eligible for next-day delivery.
Standard delivery: 2–3 working days
Next-day delivery: available on in-stock items when ordered before 3pm
Express options available — contact us for details
Returns
If you need to return an item, please contact our sales team within 30 days of receipt. Items must be returned unused in their original packaging.
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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...