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CTD8S12505AXXX - 1250 A Primary current, 5A output 30x80 mm

CTD8S12505AXXX – 1250 A Primary current, 5A output 30×80 mm

Carlo Gavazzi CTD8S12505AXXX split-core current transformer with 1250 A primary current and 5 A secondary output for high-current industrial measurement applications.

SKU: CTD8S12505AXXXMPN: CTD8S12505AXXX
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List Price £164.46 ex VAT
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£164.46
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Why Choose the Carlo Gavazzi CTD8S12505AXXX Current Transformer?

The Carlo Gavazzi CTD8S12505AXXX is a high-current split-core AC current transformer designed for accurate measurement and monitoring of large electrical currents in industrial power distribution systems. As part of the robust Carlo Gavazzi CTD-8S current transformer series, it provides a reliable 5 A secondary output for connection to energy meters, monitoring devices and electrical protection equipment.

The CTD8S12505AXXX features a split-core design that allows easier installation around existing bus-bars without requiring complete circuit disconnection. Its secure fixing system, sealable terminal covers and flexible mounting options make it suitable for industrial switchboards, electrical panels and high-current distribution equipment.

With a 1250 A primary current rating, 5 A secondary output and a 31 mm × 81 mm opening, the CTD8S12505AXXX is designed for reliable current measurement in demanding industrial electrical applications.

Key Advantages

  • 1250 A / 5 A current transformation ratio for high-current industrial measurement.
  • Split-core construction simplifies installation and retrofit applications.
  • Class 1 accuracy suitable for industrial energy monitoring and metering.
  • 30 mm × 80 mm maximum bus-bar compatibility for large conductors.
  • Multiple isolated fixing screws provide secure bus-bar mounting.
  • Sealable terminal covers improve safety and installation protection.

Key Features

  • Carlo Gavazzi CTD-8S series split-core current transformer.
  • 1250 A rated primary current.
  • 5 A rated secondary output.
  • 1250:5 current ratio.
  • Class 1 accuracy.
  • 31 mm opening diameter.
  • Maximum bus-bar size: 30 mm × 80 mm.
  • Operating frequency range of 48–62 Hz.
  • Split-core opening system with sealable fixing screws.
  • Double screw terminals supporting up to 8-wire connections.

Reliable Current Measurement for High-Power Electrical Systems

Current transformers such as the Carlo Gavazzi CTD8S12505AXXX enable safe measurement of high electrical currents by converting the primary current into a standard secondary signal. This allows connection to energy meters, monitoring systems and protection equipment without directly measuring high-current circuits.

The CTD-8S series is designed for industrial environments where accurate measurement, secure installation and long-term reliability are essential. Its split-core design makes it particularly suitable for retrofit projects and existing electrical installations.

Typical Applications

  • Industrial power distribution switchboards.
  • Large electrical panels and control cabinets.
  • Energy monitoring and power management systems.
  • Bus-bar current measurement installations.
  • Industrial metering and protection equipment.
  • Automation and electrical monitoring systems.

Technical Specifications

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Mounting Type Busbar, DIN rail, Panel / base
Device Type Split-core CT
Rated Primary Current (A) 1250 A
Secondary Current / Output 5 A
Aperture (mm) 80 × 30 mm
Accuracy Class Class 1
Rated Burden (VA) 12 VA
Manufacturer Carlo Gavazzi
Series CTD-8S
Model CTD8S12505AXXX
Product type Split-core AC current transformer
Primary current 1250 A
Secondary current 5 A
Current ratio 1250:5
Accuracy class Class 1
Rated secondary apparent power 12 VA
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 / DIN rail / panel mounting
Opening size 31 mm × 81 mm
Maximum bus-bar size 30 mm × 80 mm
Housing material Self-extinguishing PA66 UL 94 V-0
Protection rating 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 CTD8S12505AXXX used for?

The CTD8S12505AXXX is used for measuring high AC currents and providing a standard 5 A secondary output for industrial monitoring and metering equipment.

What is the current ratio of this transformer?

The transformer has a 1250:5 ratio, with a 1250 A primary current rating and 5 A secondary output.

What type of current transformer is the CTD8S12505AXXX?

The CTD8S12505AXXX is a split-core bus-bar current transformer designed for high-current industrial installations.

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 CTD8S12505AXXX provide?

The CTD8S12505AXXX provides Class 1 accuracy for reliable industrial current measurement applications.

Trusted by Industrial Electrical Engineers Worldwide

Carlo Gavazzi CTD-8S current transformers are widely used in high-current industrial measurement applications where reliable monitoring, safe installation and accurate energy management are required.

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