Current transformer 300/5A Ø22, class 0.5 TI-300-5

Current transformer – precise measurement and installation protection

This current transformer, with a transformation ratio of 300/5A, is a reliable tool for measuring current in electrical circuits. Accuracy class 0.5 guarantees precise readings, which is crucial for both professional installers and end-users who need reliable data. The closed-core through-type design ensures stability and resistance to interference.

Construction features and application

The transformer is designed for mounting on panels or busbars in a vertical or horizontal position. The diameter of the through-hole is 22 mm, and the height of the hole is in the range of 32 mm. The secondary circuit connection is made using a screw connection, which simplifies installation and ensures a secure connection. The rated primary current is 300A, and the secondary current is 5A at an apparent power of 5 VA. The transformer is used in measuring, protective and control systems where precise control of high current intensities is required.

Safety and compliance with standards

The device meets the requirements of IEC 60044-1 standard, which confirms its safety and reliability. The insulation withstand voltage is 3 kV/1 min, and the safety factor FS is 5 – this provides protection against the effects of short circuits and overloads. The operating temperature is in the range of -5°C to 40°C. The IP20 protection class indicates protection against contact with fingers and against the ingress of solid objects larger than 12.5 mm. It is important to remember the correct tightening torque of the terminals – it is 0.5 Nm – to ensure a stable connection and avoid damage.