Current transformer CT 100/5 A diameter 21 / 16x12.5 412103
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Sales unit dimensions and weight: 1 pcs
Current transformer CT 100/5 A diameter 21 / 16x12.5 412103
Current transformer for precise measurement
The CT 100/5 A current transformer is a reliable device used to measure current in electrical circuits. It is designed to work with ammeters, energy meters and multi-function meters, providing accurate and safe readings. The transformer's design allows mounting on a mounting base, TH 35 bracket or directly on rails, making it easy to integrate with existing infrastructure.
This model is particularly useful in installations where protection against overloads and short circuits is required. Thanks to the accuracy class of 0.5, the transformer provides precise measurements even under heavy loads. Using a current transformer allows for safe monitoring of electrical parameters and optimization of energy consumption.
Construction and application
The CT 100/5 A transformer is designed to work with both 21 mm diameter wires and 16 x 12.5 mm rails. Its construction is based on the principle of current transformation - the primary current flowing through the conductor induces a secondary current with a much lower value (5A), which is safe to measure with standard measuring devices.
The intended use of this type of transformer includes a wide range of applications:
- Energy monitoring systems: Precise measurement of energy consumption in commercial and industrial buildings.
- Industrial automation: Control of technological processes requiring precise current measurement.
- Protection of electrical installations: Detection of overloads and short circuits to prevent failures.
- Residential construction: Monitoring energy consumption in homes and apartments.
Key features and benefits
- High accuracy: Accuracy class 0.5 guarantees reliable measurement results, which is crucial for the proper operation of monitoring and protection systems.
- Wide range of applications: The possibility of mounting on wires of different diameters and rails provides flexibility in choosing the installation location.
- Safety of use: Protection against touch minimizes the risk of electric shock during operation.
- Calibration: The transformer has calibration, which confirms its compliance with applicable metrological standards and regulations - important for settlements with energy suppliers.
- FS 5 burden factor: Allows for short-term loading of the transformer with a current much higher than the nominal current, without damaging the device - useful when starting motors or other devices with a high starting current.
- Screw connection: Provides a secure and durable connection with secondary wires.
- Rated secondary apparent power 2 VA: Allows cooperation with a wide range of measuring devices with standard impedance.

