Round ID
Circular opening for cable or round-conductor primaries. The most common choice for feeder and incomer metering.
Overview
Resin Cast Current Transformers (Round, Rectangular, WPL)
Our resin cast current transformers combine a precision-wound core with cast resin insulation, giving a robust, sealed body that stands up to dust, handling and long service in electrical panels. Terminals are clearly marked P1/P2 and S1/S2, and a transparent cover protects the secondary terminals.
Configurations
3 types to match your installation
Rectangular ID
Rectangular window sized for busbars and bus-bar trunking, so the primary conductor passes straight through.
WPL
Compact block-type construction with primary bolt-on terminals, for installations where a wound/bar primary is preferred.
Key features
Built for dependable performance
- Cast resin insulation for a sealed, rugged body
- Round ID, Rectangular ID and WPL configurations
- Marked P1 / P2 primary and S1 / S2 secondary terminals
- Transparent secondary terminal cover
- Integral mounting feet for quick panel fixing
- Tested on in-house turn, high-voltage and CT-analyzer equipment
Applications
Where it is used
- LV and MV switchgear panels
- Energy metering and monitoring
- Protection and relay circuits
- Data centres, hospitals and hotels
- Steel, chemical and pharma plants
Specifications
Engineered to your parameters
Share the parameters below with your enquiry. Detailed datasheets are available on request.
| Primary current / ratio | Specified to the load or busbar rating, with standard 1 A or 5 A secondary |
|---|---|
| Burden (VA) | Matched to the meters, relays and lead length connected |
| Accuracy class | Metering or protection class chosen for the application |
| Window / ID size | Round or rectangular opening sized to your cable or busbar |
| Terminal position | Shorter side, longer side or top-mounted as the panel requires |
| Quantity & delivery | From single units to volume supply with consistent quality |
Get a quote
Enquire about Resin Cast CTs
Tell us what you need – ratio, burden, accuracy class, window size, terminal position and quantity – and we will respond within one working day.
Related reading: How to choose the right current transformer · Resin cast vs encapsulated CTs
