The SGR-CT-300 is a 300 A split-core current transformer for electrical current measurement and monitoring applications. Its split-core design allows installation around an existing conductor without disconnecting the cable, making it suitable for compatible metering, monitoring and energy management systems.
Key Features
- Split-core design for installation around existing conductors
- 100–300 A primary measurement range
- 24 mm aperture
- Class 1 accuracy
- 50/60 Hz operating frequency
- 0.66 kV insulation rating
- 3 kV isolation, Category II
- UL94 V-0 flame-retardant enclosure
- CE certified
Technical Specifications
| Primary measurement range | 100–300 A |
| Aperture | 24 mm |
| Cable length | 0.9 m |
| Accuracy | Class 1 |
| Operating frequency | 50/60 Hz |
| Operating temperature | -15°C to +45°C |
| Overrange | 1.2 × Ipn |
| Insulation | 0.66 kV |
| Isolation | 3 kV (Category II) |
| Enclosure | UL94 V-0 flame retardant |
| Standards | EN 60044-1:1999+A1:2000+A2:2003; EN 61869-1:2009; EN 61869-2:2012 |
Installation Notes
Install the CT with the arrow on the moulded case pointing towards the load, away from the mains supply. Terminal and cable colour conventions can vary, so refer to the label on the CT for the correct secondary output polarity and designation.
Launch DateSeptember 9, 2026
Days In Market45
VendorSmiths NZ
Variants1