Why Choose the Carlo Gavazzi CTD5S2505AXXX Split-Core Current Transformer?
The Carlo Gavazzi CTD5S2505AXXX is a reliable split-core AC current transformer designed for electrical current measurement, energy monitoring and metering applications. As part of the Carlo Gavazzi CTD-5S current transformer series, its split-core construction enables installation around an existing cable or busbar without requiring the primary conductor to be disconnected.
This current transformer provides a 250 A rated primary current and 5 A secondary output, giving a 250/5 A transformation ratio for connection to compatible energy meters, power analysers and electrical monitoring equipment. The CTD5S2505AXXX provides Accuracy Class 1 with a 1.5 VA rated secondary apparent power, supporting dependable measurement performance in industrial and commercial electrical systems.
The CTD5S2505AXXX accommodates cables up to approximately 26 mm diameter and rectangular busbars up to 26 × 32 mm. Its split-core format, double screw terminals and flexible mounting options make it particularly suitable for retrofit installations in switchboards, distribution panels and control cabinets where existing conductors need to remain in place.
Key Advantages
- Practical split-core current transformer for retrofit installations.
- 250/5 A transformation ratio for industrial electrical current measurement.
- Standard 5 A secondary output for compatible metering equipment.
- Accuracy Class 1 supports dependable current and energy measurement.
- 1.5 VA rated secondary apparent power.
- Suitable for cables up to approximately 26 mm diameter.
- Accommodates rectangular busbars up to 26 × 32 mm.
- Split-core construction simplifies installation around existing conductors.
Key Features
- Carlo Gavazzi CTD-5S current transformer series.
- 250 A rated primary current.
- 5 A rated secondary current.
- 250/5 A current transformation ratio.
- Accuracy Class 1.
- 1.5 VA rated burden at Class 1.
- 5 VA rated burden at Class 3.
- FS 5 overcurrent limiting factor.
- 26 mm nominal cable opening.
- 26 × 32 mm maximum rectangular busbar size.
- 48–62 Hz operating frequency.
- Integrated DIN-rail mounting holder and removable panel fixing clips.
- Double screw terminals with sealable terminal block covers.
Convenient Current Measurement for Existing Electrical Systems
Current transformers such as the Carlo Gavazzi CTD-5S convert the current flowing through a primary conductor into a lower proportional secondary current suitable for compatible measuring instruments. This allows energy meters, power analysers and monitoring systems to measure substantial electrical loads without requiring the full primary circuit current to pass directly through the measuring device.
The split-core construction of the CTD5S2505AXXX makes it particularly useful for retrofit projects. The transformer can be opened and positioned around an existing cable or busbar, helping minimise disruption to established wiring while its 250/5 A ratio provides a standard 5 A secondary signal for compatible industrial metering equipment.
Typical Applications
- Retrofit energy metering installations.
- Electrical switchboards and distribution panels.
- Power analysers and multifunction electrical meters.
- Building energy management systems.
- Industrial machinery and control cabinets.
- Electrical load and consumption monitoring.
