The Solid-core current transformer is designed with a current ratio of 800/5 and an accuracy class of 0.5 at 15 VA. It has been tested at a voltage of 3 kV and operates at a frequency of 50 Hz for 1 minute. The transformer has an insulation class E, which can withstand temperatures up to 120 degrees Celsius. To ensure safety and protection, the transformer is equipped with a sealable terminals cover for the secondary terminals. The housing material used is a self-extinguishing thermoplastic resin V0. The CT12 type transformer has dimensions of 196Hx180Wx68.5D mm. It features a cable diameter opening of 2x50 mm and can accommodate bars with sizes of 80x50 mm, 100x50 mm, and 125x50 mm. This current transformer is versatile and can be adapted to various mounting systems including primary cable, primary busbar, DIN rail, and wall-mounting.