The modular current transformer is designed with a current ratio of 100/5 and an accuracy class of 0.5 at 2 VA. It has been tested at a voltage of 3 kV and operates at a frequency of 50 Hz for 1 minute. The insulation class is E, which means it can withstand temperatures up to 120 degrees Celsius. This current transformer is equipped with a sealable terminals cover for the secondary terminals, ensuring secure connections. The housing material is made of self-extinguishing thermoplastic resin V0, providing safety in case of fire. The dimensions of the TRFM type are 85.5 mm in height, 52.5 mm in width, and 58 mm in depth. It also features a cable diameter opening of 29 mm, allowing for easy installation with various cable sizes. Furthermore, this current transformer can be adapted to all common mounting systems including primary cable, primary busbar, DIN rail, and wall-mounting options. Its versatility makes it suitable for different applications and installation requirements.