Current transformer with openable core 400-5A class 0.5 TO-400-5

Current transformer with openable core – precise measurement and installation protection

The TO-400-5 current transformer is a reliable device used to convert high currents into safe and measurable values for control and measurement devices. The design with an openable core facilitates installation and removal without the need to disconnect the circuit, which is particularly useful during maintenance or modernization of installations. The device finds application both in measurement systems and in electrical protection, providing accurate readings and protection against overloads and short circuits.

The transformer is characterized by a class of accuracy of 0.5, which guarantees high measurement reliability. The rated primary current is 400 A, and the secondary current is 5 A, allowing it to be adapted to a wide range of applications. The rated power of 2.5 VA ensures stable operation of the device in various conditions. Using the transformer allows for safe monitoring of the load and optimization of energy consumption.

Construction features and user parameters:

• Openable core: Enables easy installation and removal without interrupting the circuit – saving time and minimizing downtime.
• Accuracy class 0.5: Guarantee of precise measurements, essential in applications requiring high accuracy.
• Transformation ratio 400/5 A: Allows adaptation to different measurement ranges of control devices.
• FS 5 burden rating: Provides resistance to short-term overvoltages, increasing the reliability of the device.
• Screw connection: Enables solid and secure connection to the secondary circuit (S1/S2 terminals).
• Dimensions of the open core (21 x 32 mm): Compatibility with various sizes of wires and busbars.
• Operating temperature range (-15°C to +50°C): Possibility of use in a wide range of environmental conditions.
• Protection degree IP20: Protection against finger contact – safety of use.

The TO-400-5 transformer meets the requirements of IEC 60044-1 standard, which confirms its compliance with international safety and quality standards. It is a solid and durable device that will perform well in demanding industrial and energy applications. Mounting can be done both vertically and horizontally on a distribution board.