Current transformer CT 3-PHASE 400/5 A 30.5x5.5 412158

Three-phase current transformer – precise measurements and installation protection

This three-phase current transformer with a transformation ratio of 400/5 A is a reliable tool for measuring current in electrical circuits. Designed for both professional installers and end-users, it provides accurate data essential for monitoring energy consumption, load analysis, and ensuring installation safety. Its compact dimensions (30.5 x 5.5 mm) allow for easy installation even in limited spaces.

Construction and application

The current transformer converts a high primary current (up to 400 A) into a low secondary current (5 A), which is safe and easy to measure with standard meters and monitoring systems. Thanks to accuracy class 1, it guarantees precise readings, which is crucial in applications requiring high measurement reliability. Designed to work with various measuring devices, such as energy meters, network analyzers, or automation systems. The device's legalization confirms its compliance with applicable standards and enables its use in settlements with the energy supplier.

Key features and benefits

• High accuracy: Accuracy class 1 ensures precise current measurements, minimizing errors and providing reliable data.
• Safety: Galvanic isolation between the primary and secondary circuits protects the user and measuring devices from high voltage. Protection against touch increases safety.
• Wide range of applications: Ideal for monitoring loads in commercial buildings, industrial plants, and renewable energy systems.
• Solid construction: Made of high-quality materials, guaranteeing durability and reliable operation even in harsh environmental conditions.
• Easy installation: Compact dimensions and screw connection of the secondary circuit facilitate installation and connection to the existing infrastructure.
• FS 5 burden rating: Allows for short-term overloads without damaging the transformer – useful when starting motors or sudden load increases.
• Low power consumption: Energy consumption at 4 W minimizes energy losses in the installation.
• Rated secondary apparent power 4 VA: Ensures compatibility with a wide range of measuring devices.

Additional information: The transformer does not have a copper busbar, and its secondary circuit is connected using a screw connection. It has one primary input, which simplifies the configuration of the measurement system.