Current transformer with openable core 300-5A class 0.5 TO-300-5

Current transformer for precise measurements and protection

This current transformer with an openable core is a reliable tool for safe and accurate current measurement in electrical installations. Designed for both professional installers and end-users, it provides optimal performance and ease of use. Its design with an opening core simplifies installation and removal without the need to interrupt the circuit.

This transformer is particularly useful in applications where precise load control, energy consumption monitoring, or protection against short circuits and overloads is required. Accuracy class 0.5 guarantees reliable measurement results, which is crucial in measurement and control systems.

Construction features and operating parameters

The transformer's construction is designed for durability and reliability. Made of high-quality materials, it ensures long-term operation even in harsh environmental conditions. The transformer is characterized by a rated primary current of 300A and a secondary current of 5A, allowing it to be adapted to a wide range of applications. A FS 5 overload factor means the device can temporarily handle currents significantly exceeding the nominal value without damage – this is important when starting motors or other devices with high inrush current.

The secondary circuit connection – screw connection – provides a secure and stable connection of the wires. The height and width of the opening (32 mm x 21 mm) allow mounting on standard rails or wires. The insulation withstand voltage of 3 kV/1 min ensures a high level of safety. The transformer complies with IEC 60044-1, which confirms its compliance with international quality and safety standards.

Applications and benefits

• Precise measurements: Accuracy class 0.5 ensures reliable current readings, essential in energy monitoring systems and load control.

• Safety: Provides protection against short circuits and overloads, protecting devices and electrical installations from damage.

• Easy installation: The opening core simplifies installation and removal without the need to interrupt the circuit – saving time during servicing or modernization of installations.

• Versatility: Suitable for use in various industries, construction, and energy systems.

• Durability: Made of high-quality materials guarantees long-lasting and reliable operation of the device.

• Compliance with standards: Compliance with IEC 60044-1 confirms the quality and safety of the product.

• Installation flexibility: Possibility of vertical or horizontal mounting on a distribution board increases installation flexibility.