Single-phase current transformer for converting up to 40A primary current to 5A secondary current in main and sub-distributions. It operates at a maximum operating voltage of up to 1.2kV and a nominal frequency of 50-60 Hz. It has a rated power of 2VA and an accuracy class of 3. The CT PRO XT series is suitable for all conductors with a diameter of up to 18mm and busbars up to 20x10mm. A compact housing made of self-extinguishing thermoplastic and flexible mounting options ensure compatibility with common mounting systems (DIN-Rail, primary conductor, busbar). Optionally, a quick and easy installation can be carried out by connecting the secondary conductor via screw and plug terminals. The integrated electronic protection circuit (SELV) additionally ensures reliable protection against the risks that may arise from operating a current transformer in an open circuit.